Short-Term Straw Return Combined with Nitrogen Fertilizer Alters the Soil Nitrogen Supply in Rice-Rapeseed Planting Systems

文献类型： 外文期刊

第一作者： Wu, Haicheng

作者： Wu, Haicheng;Zhang, Zhi;Hu, Cheng;Liu, Donghai;Qiao, Yan;Xiao, Zhuoxi;Wu, Haicheng;Wu, Yupeng

作者机构：

关键词： straw return; soil nitrogen cycling; rice-rapeseed planting system; bacterial community composition; nitrogen cycling gene abundance

期刊名称：AGRONOMY-BASEL （ 影响因子：3.3； 五年影响因子：3.7 ）

ISSN：

年卷期： 2024 年 14 卷 6 期

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收录情况： SCI

摘要： This study aimed to assess the influences of short-term straw return combined with nitrogen (N) fertilizer on crop yield, soil properties, the bacterial community, and soil nitrogen cycling gene abundance in a rice-rapeseed planting system. A two-year field experiment was conducted in a paddy field from 2019 to 2021. There were four treatments in the experiment: -N-S, no N applied with no straw return; -N+S, no N applied with straw return; +N-S, N applied with no straw return; and +N+S, N applied with straw return. The results showed that short-term straw return combined with N fertilizer could increase crop yield and N use efficiency. N fertilizer application had a positive effect on Gemmatimonadota and Desulfobacterota abundance. Straw returning had a positive effect on Desulfobacterota and Proteobacteria abundance. N fertilization significantly increased the abundance of amoA-AOA, amoA-AOB, and nxrB in agricultural soils. Straw return and N fertilization were not conducive to denitrification. We conclude that short-term straw return combined with N fertilizer in rice-growing areas not only increase crop yield and improve crop N uptake but also increase SOM, total N, and NH4+ and improve the soil microbial activity and N use efficiency.

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