Effects of Different Nitrogen Types on Nitrogen Use Efficiency, Field Water Quality, and Soil Microbial Community in the Rice-Crayfish Co-Culture System

文献类型： 外文期刊

第一作者： Huang, Fei

作者： Huang, Fei;Yang, Shuo;Nie, Xibin;Li, Jintao;Hu, Yang;Li, Xuan;Ding, Zijuan;Hou, Jun;Huang, Fei;Yang, Shuo;Nie, Xibin;Li, Jintao;Hu, Yang;Li, Xuan;Ding, Zijuan;Wang, Xuexia;Wang, Xuexia

作者机构：

关键词： Field water quality nitrogen types; Nitrogen use efficiency; Rice-crayfish co-culture system; Soil microbial community; Rice yield

期刊名称：JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION （ 影响因子：3.9； 五年影响因子：3.9 ）

ISSN： 0718-9508

年卷期： 2023 年 23 卷 2 期

页码：

收录情况： SCI

摘要： PurposeThe rice-crayfish co-culture system (RCS) has developed rapidly in recent years due to its highly comprehensive benefits in China. A 2-year RCS experiment was carried out to assess the N types suitable.MethodsThe following four treatments were implemented in a paddy field: (1) no N fertilizer (CK), (2) base fertilizer as compound fertilizer and topdressing urea (CF), (3) slow-release compound fertilizer (CRF), and (4) base fertilizer as organic-inorganic compound fertilizer and topdressing urea (OF), and rice growth, soil conditions, and field surface water quality were measured.ResultsThe yield, N fertilizer agronomic efficiency, N partial production efficiency, and N use efficiency of rice in CRF significantly increased by 8.8%-14.3%, 44.2%-64.9%, 13.6%-15.0%, and 30.8%-39.2%, respectively compared with CF. Meanwhile, CRF improved the N accumulation of rice and the soil NH4+-N content in the full heading stage, while OF improved soil urease and catalase activities in the rice growth period compared with CF and CRF. No significant differences were found in the bacterial diversity under different N varieties. CRF had the best effect in terms of reducing NH4+-N and NO3--N concentrations at the lowest level.ConclusionsEven though the cost of CRF was significantly higher, CRF still had the highest net income, and CRF and OF had higher net income compared with CF. A comprehensive analysis of rice yield, surface water quality, and NUE found that CRF was the best choice in RCS, and eco-friendly controlled-release fertilizer should be encouraged.

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