Co-incorporation of rice straw and milk vetch (Astragalus sinicus L.) improves soil fertility and rice yield in two typical paddy soils
文献类型： 外文期刊
作者： Wan, Li 1 ; Chen, Xiaofen 1 ; Yang, Shuang 1 ; Qin, Wenjing 1 ; Zhou, Guopeng 2 ; Xia, Longlong 3 ; Kang, Yuntao 4 ; Liu, Jia 1 ;
作者机构： 1.Jiangxi Acad Agr Sci, Inst Soil & Fertilizer & Resources & Environm, Natl Engn & Technol Res Ctr Red Soil Improvement, Key Lab Acidified Soil Ameliorat & Utilizat,Minist, Nanchang 330200, Peoples R China
2.Anhui Agr Univ, Coll Resources & Environm, Hefei, Peoples R China
3.Chinese Acad Sci, Inst Soil Sci, Nanjing, Peoples R China
4.Nanjing Agr Univ, Coll Agr, Nanjing, Peoples R China
关键词： microbial biomass; milk vetch; rice straw; rice yield; soil enzyme activities; soil fertility
期刊名称：SOIL USE AND MANAGEMENT （ 影响因子：3.7； 五年影响因子：4.0 ）
ISSN： 0266-0032
年卷期： 2025 年 41 卷 1 期
页码：
收录情况： SCI
摘要： The application of rice straw and milk vetch (MV) is a common practice in paddy rice systems in Southern China. However, the effects of the addition of MV and different amounts of rice straw on paddy soil fertility and rice yield remain uncertain. To analyse the co-incorporation of MV and different amounts of rice straw on soil fertility, soil enzyme activities as well as rice yield in two typical soils in the red soil region, i.e. red and alluvial paddy soil, a pot experiment consisting of six treatments with four replications was conducted: (1) application of chemical fertilizer only as control (CK); (2) application of MV, (3) 6 g pot-1 of rice straw and milk vetch (S1MV); (4) 12 g pot-1 of rice straw and milk vetch (S2MV); (5) 18 g pot-1 of rice straw and milk vetch (S3MV) and (6) 24 g pot-1 of rice straw and milk vetch (S4MV). Our results showed that co-incorporation of rice straw and MV could significantly increase the rice yield with the highest value was found in S3MV treatment in two paddy soils when compared with the application of MV treatment. When compared with MV, the rice yield increased by 314.5% and 31.8% in S3MV in the red and alluvial paddy soil, respectively. Compared with MV treatment, co-incorporation of rice straw and MV improved soil nutrients and stimulated soil enzyme activities while the highest value was found in S2MV or S3MV treatments in two paddy soils. Moreover, the partial least squares path modelling revealed that rice yield was affected by soil organic carbon, dissolved organic carbon and soil enzyme activities. Overall, combining MV with a suitable application rate of rice straw should be recommended to improve soil fertility and rice yield in the red paddy soil region.
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