Effects of Long-term Return of Milk Vetch(Astragalus sinicus)on Soil Nutrients and Microorganism Communities in Double-rice Cropping Field  

作　　者：Rong HU Kaiwei CHEN Kailun SONG Xing YIN Chunhuo ZHOU Guorong NI 

机构地区：[1]Key Laboratory of Nutrient Management of Farmland and Prevention of Agricultural NPS Pollution,College of Land Resources and Environmental,Jiangxi Agricultural University,Nanchang 330045,China

出　　处：《Agricultural Biotechnology》2021年第4期127-129,133,共4页农业生物技术（英文版）

基　　金：Supported by National Key R&D Project(2018YFD0800503);National Natural Science Foundation of China(31860595)。

摘　　要：[Objectives]This study was conducted to investigate the effects of milk vetch(Astragalus sinicus)on soil nutrients and microorganisms in paddy fields after returning to the field.[Methods]Three treatments,no fertilization,single application of chemical fertilizers and milk vetch return combined with chemical fertilizers,were set up to determine soil nutrient contents and the quantity of microorganisms,respectively.[Results]The return of milk vetch combined with chemical fertilizers could significantly increase the contents of organic matter and total nitrogen in the paddy soil,while the contents of available potassium and available phosphorus decreased.Milk vetch return combined with chemical fertilizers could significantly increase the quantity of soil microorganisms in the paddy field.[Conclusions]The return of milk vetch can be used as a feasible measure to improve soil fertility.

关 键 词：Milk vetch Returning to field Soil nutrient MICROORGANISMS 

分 类 号：S511.42[农业科学—作物学] S158