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8 results on '"HUANG Taiqing"'

2. Effects of Different Reclamation Years and Modes on Soil Moisture Transport Pathways and Permeability Characteristics in an Open-Pit Mining Area in Guangxi.

Author

Wang, Song, Gan, Lei, Zhang, Yu, Gao, Zhibo, Luo, Zhenhong, Zhou, Haojie, Zhang, Hang, Zhang, Hongxia, and Huang, Taiqing

Subjects
STRIP mining, SOIL moisture, PERMEABILITY, POROSITY, AGRICULTURE, PLATEAUS
Abstract

The microstructural characteristics of reclaimed soil in Guangxi's bauxite mining area play a pivotal role in determining soil reclamation quality, yet they remain poorly understood. To explore the impact of varying reclamation years and modes on pore structure characteristics in this region, we selected four reclamation regions: grassland reclamation with 2 years (RG2a), grassland reclamation with 10 years (RG10a), bare ground reclamation with 2 years (RW2a) and bare ground reclamation with 10 years (RW10a). Utilizing X-ray CT technology, we scanned soil columns within a 30 cm depth to analyze pore distributions using Avizo 2020 software combined with ImageJ 1.53c and its plugins. The findings revealed a significant increase in the number of 2D and 3D macropores by 1.09% and 88.89% in RG10a compared to RG2a, as well as 39.01% and 13.33% in RG10a compared to RW10a, respectively. Furthermore, RG10a was observed to be more effective in enhancing the rounding rate of macropores and mesopores, as well as average branch length and density. Additionally, RG10a demonstrated a greater capacity to increase porosity and connectivity while reducing curvature and specific surface area among the three-dimensional parameters. The 3D reconstruction illustrated that RG modes exhibited a more abundant distribution of macropores compared to RW modes and 10a modes showed a higher presence of macropores than 2a modes, which displayed a tilted laminar pattern. Soil moisture movement simulations conducted through Avizo 2020 under various modes indicated that RG modes presented a more extensive capacity for vertical flow, while 10a modes displayed more abundant flow lines and a higher infiltration rate (K) compared to 2a modes. In conclusion, prolonged reclamation years favoring grassland reclamation modes could enhance water and nutrient transport pathways toward traditional agricultural soil. [ABSTRACT FROM AUTHOR]

Published
2024
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4. Physiological Responses of Pak Choi to Exogenous Foliar Salicylic Acid Under Soil Se Stress

Author

Huang Taiqing, Pan Liping, Jiang Zepu, Chengcheng Zeng, Liao Qing, Chen Jinping, Liang Panxia, Liu Yongxian, and Xing Ying

Subjects
Environmental Engineering, biology, Ecological Modeling, Biofortification, food and beverages, chemistry.chemical_element, Photosynthesis, medicine.disease_cause, Pollution, Lipid peroxidation, chemistry.chemical_compound, Horticulture, chemistry, Catalase, Shoot, biology.protein, medicine, Environmental Chemistry, Salicylic acid, Selenium, Oxidative stress, Water Science and Technology
Abstract

In plants, excess selenium causes general toxic symptoms. However, salicylic acid plays an important role in alleviating toxic effects of various stresses. This study aimed to clarify the role of exogenous foliar salicylic acid on alleviating selenium toxicity of pak choi exposed to moderately and highly Se-excessive soils (4 mg·kg−1 Se and 10 mg·kg−1 Se, respectively). The results showed that Se stress caused severe lipid peroxidation, desynchronization of the antioxidant enzymatic system, and significant decreases in the measures of photosynthetic activity and shoot biomass. Under Se stress conditions, exogenous foliar salicylic acid significantly increased measures of photosynthetic activity and shoot biomass, increased catalase activity, and decreased measures of oxidative stress. Moreover, exogenous salicylic acid significantly enhanced Se accumulation in shoots under Se stress conditions. We demonstrate here that foliar spraying with salicylic acid is an effective measure to alleviate the adverse effects of Se stress and enhance Se accumulation for optimizing crop Se biofortification in Se-excessive soil.

Published
2021

5. High-quality Development of Selenium-enriched Industry in Guangxi Driven by Scientific and Technological Innovation

Author

LIU Yongxian, XING Ying, TANG Xue, HE Zhong, PAN Liping, CHEN Jinping, CHEN Boqian, LIANG Qi, XU Jingmao, JIANG Zepu, LIANG Panxia, LIAO Qing, and HUANG Taiqing

Subjects
Scientific and technological innovation, Selenium enrichment, High-quality development, Rural revitalization, Agribusiness
Abstract

As the largest natural selenium-enriched soil area in China, Guangxi has achieved a leapfrog development in its selenium-enriched industry through the implementation of major scientific and technological projects driven by selenium-enriched innovation. The selenium-enriched industry has also become a new force in the poverty alleviation industry in Guangxi, making remarkable achievements. While summarizing and sorting out the effective measures and effects of scientific and technological innovation driving the development of selenium-enriched industry, the present paper analyzed some shortcomings and problems in the high-quality development of the selenium-enriched industry driven by the scientific and technological innovation. Finally, in view of the problems, it came up with pertinent recommendations and countermeasures, to better promote high-quality development of the selenium-enriched industry and boost the rural revitalization.

Published
2020
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