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Comparison of soil microbial community and physicochemical properties between rice-fallow and rice-bean (green manure) rotation

文献类型： 外文期刊

作者： Bai, Naling 1 ; Lv, Weiguang 1 ; Chu, Xiangqian 4 ; Fan, Haidan 5 ; Li, Shuangxi 1 ; Zheng, Xianqing 1 ; Zhang, Juanqin 1 ; Zhang, Haiyun 1 ; Zhang, Hanlin 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Inst, Shanghai 201403, Peoples R China

2.Minist Agr, Agr Environm & Farmland Conservat Expt Stn, Shanghai 201403, Peoples R China

3.Shanghai Key Lab Hort Technol, Shanghai 201403, Peoples R China

4.Shanghai Normal Univ, Shanghai 200234, Peoples R China

5.Yangtze Univ, Jingzhou 434023, Hubei, Peoples R China

期刊名称：SOIL SCIENCE SOCIETY OF AMERICA JOURNAL （ 影响因子：2.932； 五年影响因子：3.564 ）

ISSN： 0361-5995

年卷期： 2022 年 86 卷 3 期

页码：

收录情况： SCI

摘要： Rice (Oryza sativa L.)-fallow and rice-green manure rotation are two common ecological rotation modes in the Lower reaches of the Yangtze River Basin. In this study, based on a long-term positioning field experiment, soil microbial community structure (bacteria and fungi) and physicochemical properties were investigated and compared to comprehensively evaluate the effects of rice-fallow (RF) and rice-bean (Vicia faba L.) (green manure, RB) rotation on soil health, thus providing scientific basis for the utilization mode of paddy field in winter. The results showed that (a) compared with RF, the contents of soil organic matter (SOM), humic acid (HA), total N, and soil alkaline phosphatase in RB were significantly enhanced by 33.84, 71.04, 35.48, and 54.38%, respectively (p < .01); available K content in RF was increased by 22.84% compared with RB (p < .01); (b) the soil macroaggregates with a diameter more than 0.25 mm (R-0.25), mean weight diameter, and geometric mean diameter (GMD) in RB treatment were significantly higher than those of RF by 112.67, 60.25, and 64.88%, respectively (p < .05); (c) different rotations altered bacterial community structure significantly, but exhibited less effect on that of fungi; bulk density, pH, GMD, SOM, and HA were the key environmental factors shaping the bacterial and fungal community structure. The alteration of specific bacterial and fungal taxa revealed that RB had a more promising potential to promote crop growth and improve organic matter decomposition. Therefore, rice-green manure rotation demonstrated a stronger positive effect on soil physicochemical and microbial properties.

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