Reduction of Nitrogen Fertilizer and Retention of Crop Residue Affect Communities of Microbes and Induce Plant Growth Promoting Microbes in Five-Year Wheat-Rice Rotated Fields

文献类型： 外文期刊

第一作者： Sha, Aihua

作者： Sha, Aihua;Peng, Chenglin;Si, Guohan;Zhao, Shujun;Yuan, Jiafu;Zhang, Zhisheng;Wang, Benfu;Cheng, Jianping

作者机构：

关键词： Crop Yield; Microbes; Plant Growth Promoting; Soil Quality; Wheat-Rice Rotation

期刊名称：JOURNAL OF BIOBASED MATERIALS AND BIOENERGY （ 影响因子：0.708； 五年影响因子：0.739 ）

ISSN： 1556-6560

年卷期： 2020 年 14 卷 6 期

页码：

收录情况： SCI

摘要： Excessive application of Nitrogen (N) fertilizer easily causes soil and groundwater contamination. Crop residue can provide trophic resource in soil. Thus, reduction of N fertilizer input and retention of crop residue may be helpful to decrease fertilizer contamination and develop sustainable agriculture. In this study, the effects of N fertilizer and crop residue on rice yield, soil quality and soil microbial communities were investigated in the five-year wheat-rice rotated fields. The results showed that rice yields were maintained at a high level even if the N fertilizer was reduced to 70% of the normal content but crop residue was retained. The soil quality was not significantly affected by reducing application of N fertilizer. The abundance of bacterial and fungal communities was affected by reduction of N fertilizer and retention of crop residue. Bacteria involved in cellular community, metabolism of cofactors and vitamins, immune system, environmental adaptation were affected by reduced N utilization or crop residue. Some plant growth promoting microbes such as bacterial genus Caulobacter, fungi genera Funneliformis and Chaetomium were increased when N fertilizer was reduced or crop residue was retained. These microbes may promote plant growth by decomposing the complex organic matter to provide nutrient.

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[1]Effects of Reducing Nitrogen Fertilizer and Improving Organic Fertilizer on Crop Yield, Soil Quality and Microbial Community in Five Years Wheat-Rice Rotation Field. Peng, Chenglin,Si, Guohan,Yuan, Jiafu,Peng, Chenglin,Sha, Aihua,Cheng, Jianping,Zhang, Zhisheng,Wang, Benfu. 2021

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