Impact of nitrogen fertilization on soil microbial diversity, its mediated enzyme activities, and stem nematode population in sweet potato fields

文献类型： 外文期刊

第一作者： Shi, Fengyu

作者： Shi, Fengyu;Meng, Xinpeng;Li, Jiaxin;Yang, Dan;Zhu, Yingbo;Liu, Jianbin;Liu, Xingzhong;Xiang, Meichun

作者机构：

关键词： Ditylenchus destructor; Illumina MiSeq sequencing; biolog; pest management; phosphatase

期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：4.5； 五年影响因子：5.2 ）

ISSN：

年卷期： 2025 年 16 卷

页码：

收录情况： SCI

摘要： Excessive nitrogen fertilization in sweet potato cultivation poses significant ecological and economic challenges in China, negatively impacting soil health by altering microbial community diversity, enzyme activities, and increasing the risk of stem nematode damage. In this study, we conducted a field trial in Northeast China, applying 0-72 kg of urea-N per hectare to brown soil under a five-year sweet potato cropping system. The results demonstrated that optimal nitrogen fertilization (64.8 kg ha-1) significantly promoted beneficial microbial populations, enhanced soil urease activity, and reduced the incidence of stem nematode disease while maintaining high sweet potato yields.

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