Search

A two-factor split-plot experiment was carried out in the greenhouse of Linyi agricultural meteorological experimental site using muskmelon 'Xizhoumi 25' as the experimental material. The main area was two planting patterns of single row on ridge (D1) and double row on ridge (D2), and the sub-area was three kinds of melon nodes of 11-12 nodes (R1), 13-14 nodes (R2) and 15-16 nodes (R3), a total of 6 treatments, The plant leaf area and photosynthetic parameters, yield components and fruit quality were measured to explore the effects of different planting patterns and melon retention nodes on photosynthetic characteristics, yield and quality of muskmelon in greenhouse. The results showed that the photosynthetic efficiency of single row planting mode was higher than that of double row planting mode. The fruit diameter, single fruit weight and soluble sugar content of single row planting mode were significantly increased by 2.4%, 11.1% and 9.5%, respectively, compared with double row planting mode (P<0.05). The effect of node location on vegetative growth and reproductive growth of the plant was obvious. The photosynthetic characteristics, fruit length, fruit diameter and single fruit weight of R2 treatment were the best, and the single fruit weight was 9.41% and 14.73% higher than that of R1 and R3, respectively (P<0.05). The effect on fruit quality was extremely significant (P<0.01). The R1 treatment had the highest soluble sugar content, the R2 treatment had the highest sugar-acid ratio, and the R3 treatment had the highest VC and titratable acid content. The interaction between planting pattern and node position had significant effects on leaf area, SPAD, Pn, Ci, Gs and Tr of muskmelon (P<0.05), and the SPAD, Pn, Gs and Tr values of D1R2 combination leaves were the largest before maturity. The interaction had a significant effect on fruit length (P<0.05), and had a very significant effect on fruit diameter, fruit shape index and single fruit weight (P<0.01). Among them, the fruit diameter value of D1R1 combination was the largest, and the fruit shape index of D1R3 was the highest. The fruit length and single fruit weight of the D1R2 combination were the largest, and the average single fruit weight was 28.7% higher than that of other combinations. The interaction had a significant effect on VC content (P<0.05), and had a very significant effect on titratable acid, soluble sugar content and sugar-acid ratio (P<0.01). Of these, the D2R3 combination had the highest VC content, D1R3 had the highest titratable acid content, D1R1 had the highest soluble sugar content and D1R2 had the highest sugar-acid ratio. Under the same planting density and number of functional leaves (22500 plants·ha-1, 25 nodes topping), the three evaluation indexes of yield flavor and taste and VC content of single row planting on ridge and 13-14 nodes interaction (D1R2) mode were the highest, and the comprehensive evaluation of its commodity value was the best. It is recommended that this mode of planting should be applied and generalized in the vertical cultivation of the early spring melons in greenhouses in the north of China. [ABSTRACT FROM AUTHOR]

Copyright of Acta Agronomica Sinica is the property of Crop Science Society of China and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Drainage & Irrigation Machinery Engineering / Paiguan Jixie Gongcheng Xuebao is the property of Editorial Department of Drainage & Irrigation Machinery Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Irrigation & Drainage is the property of Journal of Irrigation & Drainage Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Relevant indicators were determined at different canopy heights(lower, middle, and upper)to analyze the vertical gradient for variations in the hydraulic architecture and photosynthetic characteristics and the relationships between them in a 7-year old Chinese fir, in Baisha State-owned Forest Farm of Minhou, Fujian Province. Significant differences(P＜0.05)were found in the hydraulic architecture and photosynthetic characteristics at different canopy heights. Hydraulic conductivity, specific conductivity, leaf-specific conductivity, water potential, and sapwood area generally decreased with increasing canopy height, with upper canopy(9 m)showing reductions of 50.2%, 35.5%, 42.6%, 23.7%, and 24.4%, respectively, compared to the lower canopy(4 m, P＜0.05).The Huber value initially decreased and then increased; however, the difference was not statistically significant. The net photosynthetic rate, stomatal conductance, transpiration rate, instantaneous water use efficiency, and stomatal limitation were significantly higher in the lower canopy than in the upper canopy, whereas the intercellular CO2 concentration was significantly higher in the upper canopy(P＜0.05).Compared with that in the lower canopy, the net photosynthetic rate in the middle and upper canopy leaves decreased by 24.4%and 32.9%, stomatal conductance decreased by 13.9%and 21.0%, transpiration rate decreased by 6.4%and 12.1%, instantaneous water-use efficiency decreased by 19.7%and 23.1%, and stomatal limitation decreased by 6.1%and 12.1%, respectively, whereas the intercellular CO2 concentration increased by 3.5%and 6.5%, respectively. Correlation analysis revealed significant positive relationships between hydraulic conductivity and both the net photosynthetic rate and stomatal conductance(P＜0.05).Specific conductivity was positively correlated with net photosynthetic rate, instantaneous water use efficiency, and stomatal limitation and negatively correlated with intercellular CO2 concentration(P＜0.01).Leaf-specific conductivity showed significant positive correlations with both stomatal conductance and the net photosynthetic rate(P＜0.01).Water potential was positively correlated with the net photosynthetic rate(P＜0.01), and sapwood area was positively correlated with stomatal conductance(P＜0.05).These findings suggest that increased tree height in Chinese fir leads to longer water transport paths, increased resistance and gravity, reduced hydraulic conductivity, closed stomata, and decreased photosynthetic efficiency to minimize water loss, indicating height-related hydraulic limitations. has context menu [ABSTRACT FROM AUTHOR]

[Objectives] his study aimed to explore the effects of drought stress on morphological changes, photosynthetic characteristics and other physiological indexes of ginger at seedling stage, and to provide reference for the study of drought tolerance mechanism and the selection of drought-tolerant varieties of ginger. [Methods] Five main varietie (‘Shandongdajiang'‘Fengtoujiang'‘Zhugenjiang'‘Luopingxiaohuangjiang'and‘Guizhouxiaohuangjiang') were selected as test materials from the main ginger producing areas of North China, Central China and Southwest China. Drought stress was simulated by 250 g·L-1 PEG-6000 solution, normal water treatment (CK) and drought treatment (DS) was set to determine the growth and physiological indexes such as leaf moisture content, leaf water potential, photosynthesis, stomatal phenotype, chlorophyll content and other growth and physiological indexes of different varieties of ginger under different treatments at 15 days, and the lignin deposition of ginger stems was observed by paraffin sectioning method. [Results] Compared with CK, the leaves of various ginger varieties had different degrees of curly yellowness at 15 days of drought treatment. The free water content (FWC), relative water content (RWC) and total water content (TWC) of leaves decreased significantly, the content of bound water (BWC) of ‘Shandongdajiang' increased, and the BWC content of the remaining four varieties decreased significantly. The water potential of the leaves of various varieties of ginger decreased significantly, and the ‘Fengtoujiang' decreased the most. In addition, the net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2 concentration (Ci), transpiration rate (Tr) of leaves decreased, the length and width of the stomata decreased, and the length and width of guard cells did not change significantly. Among the five varieties, the photosynthetic index of ‘Luopingxiaohuangjiang' was the most affected, and the stomatal conductance and transpiration rate decreased by 100% and 93.84%, respectively. The contents of chlorophyll a (Chla), chlorophyll b (Chlb) and total chlorophyll a+b (Chla+b) decreased but not significantly, while the content of carotenoid (Car) increased in‘Shandongdajiang 'but not significantly, and decreased significantly in the other four varieties. After drought treatment, the amount of stem lignin deposition increased in‘Shandongdajiang 'and‘ Luopingxiaohuangjiang'. [Conclusions] Drought stress affected the growth and development of ginger seedlings, and there were differences in drought tolerance among different ginger varieties. The drought tolerance of the five ginger varieties was ranked from strong to weak as follows: ‘Shandongdajiang'‘Fengtoujiang'‘Guizhouxiaohuangjiang'‘Zhugenjiang'‘Luopingxiaohuangjiang'.‘Shandongdajiang'had strong drought tolerance, which could be used for further analysis of the molecular mechanism of drought resistance and creation of drought resistance breeding high-quality germplasm materials. [ABSTRACT FROM AUTHOR]

To reveal the causes of photosynthetic characteristics of Yulania denudata with variegated leaf, the green leaves, variegated leaves and yellow leaves of Y. denudata with variegated leaf were used as experimental materials. The anatomical structure and photosynthetic characteristics in three types of leaves were compared from the aspects of photosynthetic pigment content, leaf anatomical structure and light response curve. The results were as follows: (1) The yellow leaf spots of Y. denudata with variegated leaf were chlorophyll-type leaf spots formed by the decrease of chlorophyll content due to the abnormal structure of chloroplasts. (2) The structure of thylakoids in the yellow region of Y. denudata with variegated leaf was abnormal, and ATP synthesis was blocked, which hindered the progress of photosynthesis. (3) The anatomical structure showed that the palisade tissue of the green leaf was developed, the chloroplast integrity and pigment content were higher than those of the variegated leaf and the yellow leaf, and the net photosynthetic rate was higher. (4) There were significant differences in the maximum net photosynthetic rate and light saturation point between the green leaf and the variegated leaf, and the green leaf could withstand a wider range of bright light than the variegated leaf. This study further elucidates that the chloroplast structure of Y. denudata with variegated leaf affects its photosynthetic characteristics, and provides a reference for the breeding of excellent germplasm of Y. denudata with variegated leaf. [ABSTRACT FROM AUTHOR]

Copyright of Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Drainage & Irrigation Machinery Engineering / Paiguan Jixie Gongcheng Xuebao is the property of Editorial Department of Drainage & Irrigation Machinery Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this study, four light models including rectangular hyperbola model, non-rectangular hyperbolic model, modified rectangular hyperbolic model and exponential model were jointly adopted to evaluate the photosynthetic parameters and light response fitting curves of six Callicarpa Linn. species in southern subtropical regions. By comparison of the light saturation point (LSP), light compensation point (LCP), maximum net photosynthetic rate (P), dark respiration rate (R) and apparent quantum efficiency (AQE), as well as the coefficient of determination (R), root mean square error (RMSE) and mean absolute error (MAE) derived from the four models, the most suitable light response models for these six plants were obtained. The results demonstrated that the modified rectangular hyperbolic model performed the best fitting ability for the photosynthetic study of the six Callicarpa species, and the highest light utilization ability under both strong and weak light belonged to C. formosana, and the highest photosynthetic efficiency was found in C. japonica var. Luxurians. In summary, these six Callicarpa species showed both interspecific variability and interspecific similarity in light utilization capacity, and the four light response models differed greatly in the calculation of the photosynthetic potential, however, there was consistency in the model's goodness-of-fit and fitting accuracy. [ABSTRACT FROM AUTHOR]

【Objective】To investigate the effects of inoculation with Trichoderma harzianum and Bacillus subtilis on the growth, photosynthetic characteristics, and antioxidant enzyme activity of Malus micromalus Makino seedlings.【Methods】A pot experiment was conducted on Malus micromalus Makino seedlings as experimental subjects, with four treatments, application of sterile water (CK), inoculation of T. harzianum suspension (TH), inoculation of B. subtilis suspension (BS), and mixed inoculation of T. harzianum suspension and B. subtilis suspension (TB). The effects of growth indicators, leaf SPAD values, gas exchange parameters, antioxidant enzyme activity, and malondialdehyde (MDA) content of Malus micromalus Makino seedlings were analyzed at 30 and 60 days after inoculation.【Results】TH, BS and TB treatments all promoted the growth, photosynthesis, and antioxidant enzyme activity of Malus micromalus Makino seedlings, with TB treatment showing the best effect. Compared with CK, after 30 and 60 days of inoculation, TB treatment significantly increased seedling plant height, stem diameter, number of leaves, aboveground dry weight, root dry weight, and root length by 16.52%, 7.43%, 23.81%, 13.71%, 21.44%, 31.06% and 16.27%, 16.54%, 18.06%, 9.36%, 15.41%, 24.18%, respectively (P<0.05); the SPAD values of seedling leaves significantly increased by 13.38% and 10.85% (P<0.05); the net photosynthetic rate, stomatal conductance, transpiration rate, and intercellular CO2 concentration of seedling leaves significantly increased by 14.08%, 14.08%, 31.03%, 9.84%and 11.88%, 27.13%, 14.95%, 10.92%, respectively (P<0.05); the activities of peroxidase activity, phenylalanine ammonia-lyase activity, superoxide dismutase activity, catalase activity, and polyphenol oxidase activity significantly increased by 20.93%, 30.10%, 42.00%, 21.52%, 23.71%, and 21.21%, 22.52%, 35.39%, 18.18%, and 18.11%, respectively (P<0.05); after 60 days of inoculation, the MDA content significantly decreased by 9.54% (P<0.05).【Conclusion】Mixed inoculation of Trichoderma harzianum and Bacillus subtilis can effectively promote the growth of Malus micromalus Makino seedlings, increase chlorophyll content and photosynthetic rate, and enhance antioxidant enzyme activity. [ABSTRACT FROM AUTHOR]

[Objectives] The paper aimed to create a new autotetraploid material with good quality. [Methods] The cotyledon growth point of the diploid Brassica campestris LCX019 seedlings was dripped with 2 g-L colchicine solution, the autotetraploid plants were identified by morphological, anatomical, cytological and flow cytometry methods, and the agronomic and quality characteristics of diploid and tetraploid plants were analyzed and compared. [Results] The results of morphology and anatomy showed that the plant type, leaf, flower, seed pod and bolt of the autotetraploid campestris showed "gigantic" characteristics, the stomatal diameter became larger and the stomatal density decreased. The size of pollen grains was larger than diploid, and the shape of pollen grains was rugby ball or irregular. The results of cytology showed that the number of chromosomes in the root tip of tetraploid was about twice that of diploid. Flow cytometry analysis showed that the DNA fluorescence intensity of tetraploid was about twice that of diploid. The contents of soluble sugar, organic acid and cellulose in tetraploid B. campestris significantly increased by 76.17%, 13.71% and 80.34%, while the contents of chlorophyll and nitrate nitrogen significantly decreased by 25.01% and 45.10%, respectively, there was no significant change in soluble protein content. By analyzing the light response curve and photosynthetic characteristics of diploid and tetraploid plants, it was found that LCX019 had stronger ability to utilize weak light than diploid plants. [Conclusions] The new tetraploid material with high quality was obtained, which would provide new germplasm resources for the breeding of flowering Chinese cabbage. [ABSTRACT FROM AUTHOR]

[Objective] Leaf characteristics, photosynthetic index and key enzyme activities of carbon metabolism were studied to investigate the relationship between photosynthetic characteristics and carbon metabolism in different light environments and growth stages. [Method] Two varieties, shade tolerance Nanxiadou38 (ND38) and shade sensitive Huaxias (HX5) were used in field experiment under green shading net to investigate the specific leaf weight, leaf area per plant, photosynthetic pigment concentration, photosynthetic performance, biomass distribution, sugar levels and key enzymatic activities related to carbon metabolism. [Result] With the shade treatment during shading period, the specific leaf weight, leaf area per plant, photosynthetic pigment concentration and photosynthetic rate all decreased significantly with shading area treatment, and the decline of HX5 was more obvious than that of ND38, Biomass allocation increased in stem but decreased in leaf, and the leaf proportion of ND38 was significantly higher than that of HX5. Both soluble sugar and sucrose levels in leaves decreased significantly, but sucrose content under heavy shading was significantly lower than that under light shading, and the decline of HX5 was more obvious than that of ND38. Starch content increased significantly and the range of HX5 was higher than that of ND38. Starch content of HX5 all was higher than that of ND38. Sucrose synthetase (SS), sucrose phosphate synthetase (SPS) and sucrose invertase (Inv) decreased significantly. SS and Inv in heavy shading were significantly lower than of light shading, and there was no significant difference between varieties under the same shading treatment. During light recovery period, the difference of leaf traits among treatments decreased and the preference of leaf mass allocation ratio declined. Starch content with shading treatment was significantly higher than that of normal light. The recovery ability of ND38 was better than that of HXS. SPS and Iny of ND38 also were significantly higher than those of HXS, but SS of ND38 was higher than that of HX5 in heavy shading treatment. The recovery ability of ND38 was better than that of HXS. [Conclusion] Specific leaf weight, photosynthetic pigment concentration, photosynthetic rate and key enzyme activities of carbon metabolism decrease significantly during shading period. However, starch content and stem biomass allocation increase. During light recovery period, photosynthetic performance and enzyme activity recovered rapidly and leaf biomass allocation increase. HX5 is sensitive to shading treatment, and its photosynthetic performance and enzyme activity decrease significantly. ND38 can keep quite photosynthetic performance and equitable mass allocation during shading period. The recovery ability of photosynthetic performance and key enzymatic activities of ND38 is better than that of HX5. [ABSTRACT FROM AUTHOR]

[Objective] The study aimed to explore the effects of four weed populations on apple photosynthetic characteristics and fruit quality formation, and screen out suitable grass for planting in Zhaotong orchards. [Method] We conducted a field experiment with Fuji apples and set orchard clear-cutting as the control, and explored the effects of Artemisia absinthium(Artemisia lavandulaefolia DC), Artemisia stellate (Stellaria vestita Kurz.), Ryegrass (Lolium perenne L.) and White-flowered cheatgrass (Trifolium repens Linn) on the leaf chlorophyll content, photosynthetic characteristics and fruit quality of the fruit trees. [Result] White-flowered cheatgrass treatment could increase leaf total chlorophyll content, net photosynthetic rate (P), intercellular CO₂ concentration (C₁), stomatal conductance(G) and carboxylation efficiency (CE), while the water use efficiency (WUE) of the fruit trees was significantly reduced. The Artemisia absinthium treatment could increase leaf G, and improve C, to a certain extent, but it would reduce the total chlorophyll content and leaf CE. Artemisia stellate treatment could increase C, and the total chlorophyll content as well as leaf transpiration rate (T,) were reduced. Ryegrass treatment significantly increased WUE and CE, but significantly reduced T. Quality aspect, the various raw grass treatments increased fruit solids content by 0.88% 13.87%, reduced reducing sugar content by 2.30% 15.71%, increased total antioxidant capacity by 10.03%-40.92%, and the ryegrass treatment reduced hydrogen peroxide content by 41.80% and superoxide anion scavenging capacity by 12.92%, as compared to clear tillage. Using fuzzy membership function analysis, the comprehensive evaluation value of clear tillage, white clover, mugwort, stellaria and ryegrass were 0.4858, 0.6044, 0.5548, 0.4894 and 0.6059, respectively. [Conclusion] Different weed populations can improve the photosynthetic capacity of fruit leaves and improve fruit quality to a certain extent. Scientific evaluation of four weed populations is beneficial to screen out more reasonable grass types in orchards. [ABSTRACT FROM AUTHOR]

Copyright of Acta Agronomica Sinica is the property of Crop Science Society of China and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Northwest A & F University - Natural Science Edition is the property of Editorial Department of Journal of Northwest A&F University (Natural Science Edition) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The photosynthetic fluorescence characteristics of 8 Zanthoxylum bungeanum varieties in the Loess Plateau region of central Gansu were explored to provide reference for the excellent cultivar screening and adaptability research of Zanthoxylum bungeanum in the Loess Plateau region of central Gansu. By taking the 2-year-old seedlings of 8 Zanthoxylum bungeanum varieties as the research object, the photosynthetic parameters such as the net photosynthetic rate and stomatal conductivity of Zanthoxylum bungeanum were measured by using the photosynthetic analyzer, and the chlorophyll fluorescence characteristics such as the initial fluorescence and photochemical quenching coefficient were measured by using the luminoscope. Then, the photosynthetic characteristics and chlorophyll fluorescence parameters of leaves among different Zanthoxylum bungeanum varieties were compared and analyzed. The results showed that: the photosynthetic characteristics were presented as the net photosynthetic rate ( Pn ) and transpiration rate ( Tr ) of different Zanthoxylum bungeanum varieties decreased gradually with time. The Gs of Qin’an Dahongpao and Wucimei Zanthoxylum bungeanum decreased gradually with time. Nanqiang No.1, Goujiao and Shizitou showed a trend of increasing first and then decreasing, while other varieties had no obvious variation tendency. The Pn, stomatal conductivity ( Gs ) and transpiration rate ( Tr ) of Wucimei Zanthoxylum bungeanum were the highest in July. Except that the intercellular CO2 concentration ( Ci ) of Huanggai and Goujiao decreased first and then increased, the intercellular CO2 concentration ( Ci ) of other Zanthoxylum bungeanum varieties showed a gradual rising tendency. The fluorescence characteristics showed that except for the F0 of Qin’an Dahongpao and Goujiao increased first and then decreased with time, the initial fluorescence (F0) of other varieties decreased gradually with time. The maximum fluorescence (Fm) of Qin’an Dahongpao and Qin’an No.1 in different periods was significantly higher than that of other varieties. The maximum primary photochemical quantum efficiency (Fv/Fm) of PSⅡ in each Zanthoxylum bungeanum variety did not change significantly during the whole growth period, which was basically maintained at 0.6-0.8. In September, the photochemical pathway transformation energy (ψPSⅡ) and electron transporting rate (ETR) of Wucimei Zanthoxylum bungeanum were significantly higher than those of other varieties. The photochemical quenching coefficient (qP) of each Zanthoxylum bungeanum variety showed different trends with time, but there was no significant change in the whole growth period of Qin’an Dahongpao. [ABSTRACT FROM AUTHOR]

[Objective] The paper aimed to study the effects of combined application of biochar and nitrogen fertilizer on SPAD value, photo- synthetic characteristics, dry matter accumulation, transport, grain filling rate and yield of spring wheat in irrigation area of northern Xinjiang, which provided a basis for rational application of different amounts of nitrogen fertilizer and combined application of biochar in irrigation area of northern Xinjiang and increasing yield and efficiency of farmland. (Method) In the study, the high-quality spring wheat variety Xinchun 37' in Xinjiang was used as the test material, and a randomized block design was used, four nitrogen fertilizer levels were set up as non-nitro- gen fertilizer (NO:0 kg/hm²), conventional nitrogen fertilizer (N1: 300 kg/hm²), nitrogen fertilizer reduction 15% (N²: ²55 kg/hm²), nitrogen fertilizer reduction 30% (N3: ²10 kg/hm²); Two biochar levels were set up as non-biochar (BO:0 kg/hm²) and biochar (B1: ²0 x 10³ kg/hm²), including 8 treatments as BONO, BINO, BONI, BINI, BON², BIN², BON3, BI N3; The SPAD value of flag leaf, photosynthetic indexes (net photosynthetic rate, stomatal conductance, transpiration rate, intercellular CO, concentration), dry matter accumulation and transport during growth period, grain filling rate, yield and its composition of spring wheat were measured, to clarifying the effects of different a-mounts of nitrogen fertilizer and biochar on the growth of spring wheat. (Result) Compared with non-biochar and non-nitrogen fertilizer (BONO),15% reduction of nitrogen fertilizer combined with biochar (B1N²) could significantly increased the SPAD value of flag leaf, net photosynthetic rate, stomatal conductance, transpiration rate, dry matter accumulation and transport rate, grain filling rate and yield of spring wheat. Under the BIN² treatment, the SPAD value increased by 13.17%-91.70%, the net photosynthetic rate increased by 17.4²% 87.30%, the stomatal conductance increased by 16.00%-²9.41%, and the transpiration rate increased by ²5.35% -79.81%. At the maturity stage of spring wheat, the dry matter of grains increased by ²8.87%, and the yield increased by 30.²3%. [Conclusion] Appropriate amount of biochar ²0 x 10³ kg/hm² and nitrogen fertilizer ²55 kg/hm² (B1 N²) can initially achieve the purpose of increasing spring wheat yield and reducing nitrogen fertilizer application, and provide a theoretical basis for the formulation of scientific application strategies of nitro- gen fertilizer and biochar in farmland in northern Xinjiang irrigation area. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to explore the rational utilization method of brackish water and formulate a reasonable sprinkler irrigation mechanism of brackish water, based on the experimental station in Hebei low-plain salt water area, the effects of freshwater sprinkler irrigation, 2 g / L and 3 g / L salinity brackish water sprinkling irrigation on the leaf photosynthesis characteristics, root distribution and yield of winter wheat were studied through two consecutive years of field plot experiment. The results showed that compared with freshwater sprinkler irrigation(CK), the leaf net photosynthetic rate(Pn ), transpiration rate (Tr), leaf water use efficiency (LWUE) and limited value of stomatal (Ls) of winter wheat in grain-filling stage in 2020 and 2021 in the brackish water sprinkling irrigation treatments with the mineralization degree of 2 g / L and 3 g / L all decreased than those in freshwater sprinkler irrigation(CK). Compared with freshwater sprinkler irrigation, 2 g / L brackish water treatments had no significant effect on the growth and yield of winter wheat, while 3 g / L saline water treatment significantly inhibited the growth and yield of winter wheat, and the accumulation of salt further inhibited the growth of winter wheat in the second year. The research results indicated that the application of brackish water sprinkler irrigation could alleviate the effects of drought stress on the production of winter wheat in the lowplain areas of Hebei which was lack of freshwater resources to a certain extent. 2 g / L The saline water sprinkler irrigation with the mineralization degree of 2 g / L could relieve the water shortage in agriculture, but it also could reduce the inhibition of salt accumulation on the growth and yield of winter wheat, and ensure normal agricultural production activities. [ABSTRACT FROM AUTHOR]

In order to screen for the optimal intercropping mode of maize soybean intercropping in the Loess Plateau area, in this study, an accurate and precise seeding technique with 3-5 cm film side was adopted. The experiment was conducted at the Agricultural Technology Extension Center Experimental Station in Shenmu city, Shaanxi province from 2022 to 2023, with six treatments including maize monoculture(CJCJ), soybean monoculture(SJSJ), maize soybean intercropping 2C2S(row ratio of maize and soybean was 2∶2), 2C4S(2∶4), 4C2S(4∶2), and 4C4S(4∶4), to study the effects of intermembranous maize soybean intercropping on the photosynthetic characteristics, yield, and water use efficiency of maize. The results showed that in 2022 and 2023, the net photosynthetic rate, stomatal conductance, and transpiration rate of the intercropping treatments at heading stage of maize were higher than those of CJCJ treatment, and there were significant differences in stomatal conductance among the treatments. From the perspective of the aboveground dry matter mass during the maturity period of maize in 2 years, the value of the 2C4S treatment increased by 3.27%-81.42% compared to each treatment, indicating that the treatment was beneficial for the accumulation of aboveground dry matter in intercropped maize. The maize yield of each treatment in the maize soybean intercropping mode was the highest in the 2C4S treatment, with population yield reaching 8 157.04 kg/ha and 13 506.62 kg/ha in 2 years, respectively, increased by 37.08% and 20.88% compared to the CJCJ treatment. The water use efficiency of 2C4S and 4C2S treatments was 3.04%-12.19% higher than that of CJCJ treatment in 2 years. In summary, the composite planting mode of maize soybean intercropping with a band pattern of 2∶4 row ratio in each intercropping treatment was the optimal ratio, it increased the total yield of maize in the planting system and was suitable for promotion and application in northern Shaanxi. [ABSTRACT FROM AUTHOR]

To explore the mechanism of increasing yield and benefit of millet-soybean intercropping in loess hilly and gully region, in this study, 5 treatments including SG(millet), SD(soybean), I22(millet-soybean row ratio 2∶2), I24(2∶4), and I42(4∶ 2) were set, the effects of different intercropping treatments on population photosynthetic characteristics, agronomic traits, and yield benefit were comprehensively analyzed. The results showed that net photosynthetic rate, transpiration rate, and stomatal conductance of millet in intercropping were generally higher than those in monoculture, and intercellular CO2 concentration in monoculture was higher than that in intercropping. The net photosynthetic rate, transpiration rate, and stomatal conductance of intercropping I24 at filling stage were significantly higher than those in I22 and I42. Net photosynthetic rate, transpiration rate, and stomatal conductance of soybean in monoculture were generally higher than those in intercropping. The average plant height, stem diameter, and dry matter accumulation in the entire growth period of millet in intercropping were higher than those in monoculture. The plant height at harvest stage of millet in I24 treatment were significantly higher than that in SG and I22 treatment at maturity, and the stem diameter was significantly higher than that in SG and I42 treatment, the dry matter accumulation was significantly higher than that in SG. The average plant height of soybean in intercropping was higher than that of monoculture, the stem diameter and dry matter accumulation in intercropping were lower than those in monoculture, and the agromic traits in I24 treatment were better than those in I22 and I42. The yield of millet in intercropping was higher than that in monoculture, and the yield in I24 was 45.17%, 13.14%, and 25.66% higher than that in SG, I22, and I42, respectively. The yield of soybean in intercropping was slightly lower than that in monoculture, without significant difference. The total yield in intercropping was higher than that in monoculture millet and monoculture soybean, with intercropping advantage, and the yield in I24 was significantly higher than that in other treatments, with the best economic benefit. [ABSTRACT FROM AUTHOR]

To explore the correlation mechanism of mung bean planting density and root morphology and photosynthetic characteristics in arid areas in northern Shaanxi, in this study, taking a characteristic mung bean variety Yulü1 in Hengshan district of Yulin city of Shaanxi province as the tested material, the random group design was applied to set up 3 planting densities including 5.70(D1), 6.60(D2), and 79 500 strains/ha(D3), and the influence of planting density on root morphology and leaf photosynthetic characteristics was analyzed. The results indicated that compared with the D2 and D3 treatments, the root length and root surface area of mung bean in the D1 treatment increased by 29% and 2% respectively. The net photosynthetic rate and transpiration rate of mung bean were generally W-shaped throughout the growth period, there was no significant differences between the 3 treatments. Intercellular CO2 concentration reached its maximum during the bulge phase, D2 and D3 treatment increased the intercellular CO2 concentration by 14% and 27% respectively compared with D1 treatment. Under 3 treatments, plant height, stem diameter, and biomass all showed a slight decrease with the increase of planting density, there was no significant differences between the treatments. Compared with the D2 and D3 treatments, D1 treatment increased yield of mung bean by 5% and 32%, respectively. Correlation analysis found that net photosynthetic rate and stomatal conductivity were extremely significantly positively correlated with transpiration rate, respectively, and yield was significantly positively correlated with root mass and was extremely significantly positively correlated with stem mass, respectively. In conclusion, different planting densities could regulate the root morphology, which could significantly optimize and regulate the photosynthetic physiological characteristics at the flower pod stage, change the accumulation and distribution of dry matter in roots, stems, and leaves, promote the transfer of dry matter to grains, and then promote the increase of mung bean yield. Therefore, after comprehensive comparison, when the planting density of the mung bean variety Yulü 1 was 5.70 10 000 plants/ha, it was the most suitable for planting in the arid areas in northern Shaanxi. [ABSTRACT FROM AUTHOR]

Copyright of Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

To investigate the regulatory effects of exogenous Bacillus velezensis(B. v. ) on seed germination, seedling growth and photosynthetic system of maize, Zhengdan 958 and Jingnongke 728 were used as test materials for inoculation with B. v. . the results showed that:Compared with CK, exogenous application of B. v. significantly promoted maize seed shoot germination and effectively increased seedling height, leaf area, fresh weight, dry weight and root to crown ratio. Compared with Bacillus bacteria agent, B. v. treatment had a significant advantage in promoting maize seed germination, and the indexes related to agronomic traits such as plant height, leaf area, dry weight and fresh weight were also not significantly different from those of Bacillus bacteria agent. Compared to CK, maize seedlings under exogenous B. v. treatment showed significantly higher Pn, Tr, Gs and WUE and significantly lower Ci compared to CK. Pn, Tr and Gs under B. v. treatment were not significantly different from Bacillus bacteria agent treatment, but significantly weaker than Bacillus mycoflora in terms of Ci utilization efficiency. Compared with CK, exogenous application of B. v. helped to enhance chlorophyll content and improve fluorescence characteristics in maize seedling leaves: significantly enhanced chlorophyll a, chlorophyll b, chlorophyll a / b,the total chlorophyll content, Fm, Fv / Fm, Fv / Fo and qP, and significantly reduced Fo and NPQ. The chlorophyll content and total content of leaves under B. v. treatment were significantly higher than those under Bacillus bacteria agent treatment, and the fluorescence parameters were not significantly different from Bacillus bacteria agent treatment overall, and some indexes were even better than Bacillus bacteria agent treatment. Therefore, Bacillus velezensis has a good development prospect and application value on corn, and has the potential to be further developed into a new type of bacterial agent. [ABSTRACT FROM AUTHOR]

Copyright of Acta Agronomica Sinica is the property of Crop Science Society of China and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Agronomica Sinica is the property of Crop Science Society of China and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Northwest A & F University - Natural Science Edition is the property of Editorial Department of Journal of Northwest A&F University (Natural Science Edition) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objective] To explore the photosynthetic characteristics and chlorophyll fluorescence characteristics of Phragmites australis in Yancheng coastal freshwater wetland. [Method] Taking Phragmites australis in Yancheng coastal freshwater wetland as the research object, the diurnal changes of photosynthetic parameters and chlorophyll fluorescence parameters of Phragmites australis in coastal freshwater wetlands were measured and compared with Phragmites australis in coastal salt marshes. [Result] The diurnal variation of net photosynthetic rate, stomatal conductance, transpiration rate and intercellular CO, concentration of Phragmites australis in the coastal freshwater wetland of Yancheng presented a double peak pattern, the diurnal variation of water use efficiency showed a "U" pattern. The diurnal variation of electron transfer rate had a downward trend as a whole, and the diurnal variation of non photochemical quenching coefficient and actual photochemical quantum efficiency presented an inverted "U" pattern and a "U" pattern, respectively. The net photosynthetic rate of Phragmites australis in coastal freshwater wetland was higher than that in coastal salt marsh wetland, and it had stronger photosynthetic capacity. [Conclusion] Compared with coastal salt marsh wetlands, Phragmites australis in Yancheng coastal freshwater wetland has stronger photosynthetic carbon fixation capacity. [ABSTRACT FROM AUTHOR]

Copyright of Journal of the Chinese Society of Rare Earths is the property of Editorial Department of Journal of the Chinese Society of Rare Earths and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

【Objective】Explore the effects of different irrigation periods and amounts on the growth and photosynthetic characteristics of quinoa in the northern foothills of the Yinshan Mountains, to determine the reasonable irrigation system for quinoa in the area.【Methods】In Wuchuan Dry Farming Experiment Station in Inner Mongolia, 6 drip irrigation treatments, W1 (irrigation in the seedling stage + branching stage), W2 (irrigation in the seedling stage + heading stage), W3 (irrigation in the seedling stage + filling stage), W4 (irrigation in the seedling stage + branching stage + heading stage), W5 (irrigation in the seedling stage + branching stage + filling stage), and W6 (irrigation in the seedling stage + heading stage + filling stage) were set up. The plant dry matter accumulation dynamics, leaf area index, changes in photosynthetic characteristics and crop yield effects of quinoa during the growth period were monitored.【Results】During the entire growth period of quinoa, dry matter accumulation and leaf area index showed upward trends with the increase of drip irrigation amount. The leaf area index of W5 treatment increased by 45.00% compared with W1 treatment in the filling stage. During the flowering stage of quinoa, the leaf photosynthetic rate, transpiration rate and stomatal conductance had downward trends as the drip irrigation amount increased, but some levels of deficit irrigation could significantly improve leaf water use efficiency. The leaf water use efficiency of W5 treatment significantly increased (P<0.05) by 39.04% compared to W1 treatment. There were significant differences in the yield of quinoa under different drip irrigation treatments. W5 treatment had the highest yield of 2 245.60 kg/hm², which was significantly increased (P<0.05) by 78.68% compared to W1 treatment.【Conclusion】In the northern foothills of Yinshan Mountains, irrigation with a total volume of 1 350 m³/hm² during the seedling, branching, and filling stages of quinoa improved water use efficiency and achieved high yield. [ABSTRACT FROM AUTHOR]

Copyright of Acta Prataculturae Sinica is the property of Acta Prataculturae Sinica Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Irrigation & Drainage is the property of Journal of Irrigation & Drainage Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Forest Research is the property of Forest Research Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

【Objective】In modern vegetable facility cultivation, the quality of vegetable seedlings plays a very important role in the economic benefits of subsequent agricultural production. Continuous light is a common special light mode in artificial light plant factory. Exploring the effect of continuous light combined with light quality on the growth and development of pepper seedlings could provide an important technical reference for efficiently improving the resistance of pepper seedlings.【Method】The pepper backbone parent ‘6421’ was used as the test material, and 6 light treatment groups were set up: normal white light irradiation group (CW), normal blue light irradiation group (CB), normal red light irradiation group (CR), continuous white light irradiation group (TW), continuous blue light irradiation group (TB) and continuous red light irradiation group (TR). The effects of continuous photoperiod treatment combined with red and blue light on the growth and physiological characteristics of pepper seedlings were studied.【Result】 (1) TR significantly increased the plant height and stem diameter of pepper seedlings by 20.5% and 10.6%, respectively, compared with the CW group. After TR treatment, the seedling index increased significantly by 2.38 times, while TB significantly reduced the plant height and stem diameter of pepper seedlings by 17.1% and 14.3%, and the root-shoot ratio increased significantly by 2.62 times. (2) There was no significant difference in Pn and Gs of pepper seedling leaves between TR and TB, but Tr and Ci of TB were significantly lower than those of TR. Compared with CW, Tr and Ci of TB were significantly reduced by 62.5% and 51.1%. The chlorophyll fluorescence parameters of pepper seedling leaves showed opposite results after different light treatments. The Fv/Fm, Fv/Fo, NPQ and qP values of pepper seedling leaves in TB group were significantly higher than those in TR group. The qP of TB and TR was significantly higher than that of CW, increasing by 36.1% and 26.1%, respectively. (3) The antioxidant enzyme activity and osmotic substances of pepper seedlings were significantly different after continuous red light treatment and continuous blue light treatment. TB significantly increased SOD, POD and CAT in leaves of pepper seedlings. The POD and CAT activities of pepper seedling leaves were also significantly increased after TR treatment, while the MDA content of pepper leaves after TB and TR treatments was significantly reduced by 55%-56% compared with that of CW. 【Conclusion】Continuous light conditions have a positive effect on the growth and development of pepper seedlings at the seedling stage, and the antioxidant enzyme activity and osmotic substances of pepper seedlings under continuous light irradiation combined with monochromatic red and monochromatic blue light treatments increase to different degrees to better counteract the light stress environment and improve the adaptability of pepper seedlings. [ABSTRACT FROM AUTHOR]

Copyright of Acta Agronomica Sinica is the property of Crop Science Society of China and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bulletin of Botanical Research is the property of Bulletin of Botanical Research Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objective] Study the effects of AM fungi and nitrogen addition on the root infection rate and photosynthetic characteristics of sorghum, to screen for the optimal amount of biological and nitrogen fertilizer. 【Methods] Using pot experiment, 6 treatments were set up including 0,150,and 300 kg/hm² three nitrogen levels (NO. N1 and N2) and two AM fungal treatments (inoculation GM and non-inculation NGM). Sorghum root infection status and photosynthetic indexes at filling stage were investigated. [Results] AM fungi and nitrogen treatments had significant interactions (P<0.05) on sorghum root infection rate, leaf stomatal conductance, and leaf transpiration rate. Compared with the non-inoculation treatment, the sorghum leaf chlorophyll contents of inoculated NO, NI, and N2 levels increased by 10.80%, 8.29%, and 8.78% (P<0.05), respectively, and the net assimilation rate increased by 8.86%, 9.47%, and 4.03% (P<0.05), respectively. The sorghum leaf transpiration rates of NO and NI levels increased by 24.85% and 16.14%, respectively (P<0.05). Under the inoculation treatment, compared with NO level, the sorghum root infection rates under NI and N2 levels decreased by 35.38% and 30.77%, respectively (P<0.05), and the leaf stomatal conductance decreased by 15.96% and 19.54%, respectively (P<0.05).Correlation analysis showed that AM fungi addition resulted in significant positive correlation of sorghum root infection rate with leaf chlorophyll content, stomatal conductance, net assimilation rate, and transpiration rate (P<0.05). [Conclusion】AM fungi inoculation and 150 kg/hm² of nitrogen fertilizer addition were the best treatments to reduce root infection rate and improve the photosynthetic characteristics of sorghum. [ABSTRACT FROM AUTHOR]

[Objective]In order to explore the pioneer plants of ecological restoration in severe rocky desertification area.[Method]Five kinds of vines（Callerya tsui,Wisteria sinensis,Bauhinia championii, Trachelospermum jasminoides,Millettia dielsiana Harms） with strong resistance were selected and cultivated in severe rocky desertification area.The apparent quantum efficiency（AQE）,net photosynthetic rate（Pn）,light saturation point（LSP）,light compensation point（LCP）,dark respiration rate（DRR） and photoresponse curve（LRC） of five vines of nine-months seedlings were studied.[Result]The results showed that the AQY of the five vines were large in weak light, and the LCP ranged from 5.738-12.022 μmol/（m²·s）.It is indicated that they have strong ability to use weak light.The LSP of five vines ranged from 5.738-12.022 μmol/（m²·s）.It is indicated that they belong to strong and positive plants.The relative water content of the leaves of the five vines was relatively high, and Wisteria sinensis was slightly lower than the other four vines, which showed that the drought tolerance of Wisteria sinensis was weaker than the other four vines.[Conclusion]In general, the five vines are heliophilous and drought-tolerant.Therefore, it is suggested that five vines should be used together to restore severe rocky desertification area. [ABSTRACT FROM AUTHOR]

Copyright of Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao is the property of Chinese Journal of Applied Ecology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

【Objective】To screen varieties of dryland spring maize suitable for planting in Shanxi Province.【Methods】From 2020 to 2021, four spring maize varieties with good growth and high yield were selected as experimental materials and tested at two test sites of Chaoyang Town, Shouyang County and Dongyang Town, Yuci District in Jinzhong City. Using single factor randomized block design, the agronomic traits, photosynthetic characteristics, and dry matter accumulation of spring maize varieties were compared and the correlation analysis on yield and yield components were performed.【Results】At the test site in Chaoyang Town, Shouyang County, Dafeng 30 and Dika 159 had excellent agronomic traits, strong photosynthetic characteristics, high dry matter accumulation in leaves and panicles, and low dry matter accumulation in stems. The average yield increased by 3.59% and 1.70% compared to Taiyuan No. 9 (CK), respectively. At the test site in Dongyang Town, Yuci District, the photosynthetic characteristics and dry matter accumulation of Dafeng 30 were significantly higher than those of Jindan 86 in the early growth stage, while there was no significant difference between the two in the later growth stage. Compared with Jinboshi 806 (CK), the average yields of Dafeng 30 and Jindan 86 increased by 4.13% and 3.69%, respectively. The yield of spring maize was negatively correlated with bald tip length, but positively correlated with ear length, number of grains per ear, 100-grain weight, and yield per plant.【Conclusion】Dafeng 30, Dika 159, and Jindan 86 were suitable for large-scale demonstration and promotion planting in the dryland spring maize planting areas of Shanxi. [ABSTRACT FROM AUTHOR]