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[Optimizing fertilization scheme of N, P
- Source :
- Ying yong sheng tai xue bao = The journal of applied ecology. 29(9)
- Publication Year :
- 2018
-
Abstract
- To get optimal nitrogen (N), phosphorus (P本试验采用三因子二次饱和D-最优设计(310),以蛭石为栽培介质,建立了以氮、磷、钾浓度为变量因子,茄子产量和品质为目标函数的三元二次数学模型,以期得到茄子优质高产最优氮磷钾浓度范围.对模型解析结果表明: 氮、磷、钾浓度对茄子产量和品质均有显著影响.对产量和品质的影响程度均以钾浓度较大,对产量的影响程度以氮浓度次之,磷浓度较小,对品质则为磷浓度次之,氮浓度较小.氮磷、氮钾、磷钾浓度交互对茄子产量均有显著影响;氮钾浓度交互对茄子品质亦有显著影响.在低水平条件下,茄子产量和品质均随氮、磷、钾浓度增加而增加,但超过一定范围后,茄子产量和品质均随之降低.通过计算机模拟运算得出,本试验条件下茄子单株产量达3600 g的施肥方案为:氮16.0~20.0 mmol·L
- Subjects :
- Nitrogen
Agriculture
Phosphorus
Solanum melongena
Phosphorus Compounds
Fertilizers
Subjects
Details
- ISSN :
- 10019332
- Volume :
- 29
- Issue :
- 9
- Database :
- OpenAIRE
- Journal :
- Ying yong sheng tai xue bao = The journal of applied ecology
- Accession number :
- edsair.pmid..........19f73ea0a0dcd5f448060636d0dea6d0