Rice straw nitrogen can be utilized by rice more efficiently when co-incorporating with milk vetch
文献类型： 外文期刊
作者： Fan, Qianyu 1 ; Xie, Jiancheng 2 ; Du, Jintao 1 ; Ge, Huanyu 3 ; Wei, Cuilan 4 ; Qian, Hao 1 ; Liang, Hai 5 ; Nie, Jun 6 ; Hu, Feng 1 ; Gao, Songjuan 1 ; Cao, Weidong 2 ;
作者机构： 1.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Jiangsu, Peoples R China
2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, State Key Lab Efficient Utilizat Arid & Semiarid A, Beijing 100081, Peoples R China
3.Shanxi Agr Univ, Coll Resources & Environm, Taigu 030801, Shanxi, Peoples R China
4.Jiangsu Open Univ, Coll Environm & Ecol, Nanjing 210036, Peoples R China
5.Guangxi Acad Agr Sci, Agr Resources & Environm Res Inst, Guangxi Key Lab Arable Land Conservat, Nanning 530007, Peoples R China
6.Hunan Acad Agr Sci, Soil & Fertilizer Inst Hunan Prov, Changsha 410125, Hunan, Peoples R China
关键词： Milk vetch; Rice straw; N utilization; Rice N uptake; 15 N dual-label
期刊名称：EUROPEAN JOURNAL OF AGRONOMY （ 影响因子：5.5； 五年影响因子：5.9 ）
ISSN： 1161-0301
年卷期： 2025 年 164 卷
页码：
收录情况： SCI
摘要： The co-incorporation of milk vetch (MV) and rice straw (RS) in paddy field can promote nitrogen (N) uptake of rice, but the mechanisms of increased N utilization and contributions of milk vetch N (NMV) or rice straw N (NRS) to rice N uptake are still unclear. Two long-term field experiments and a 15N dual-label pot experiment were established to explore the effects of co-incorporation of milk vetch and rice straw on the fate and utilization of milk vetch N and rice straw N in the rice cropping system. Results of the field experiments showed that coincorporation of MV and RS increased the rice N uptake by 45.0 % at two sites on average, compared to single RS return. The 15N dual-label pot experiment indicated that compared to single RS, co-incorporation of MV and RS increased the NRS uptake and NRS recovery of rice by 53.2 % and 53.4 %, respectively, and the NRS recovery in soil was increased by 55.4 %. This study concluded that co-incorporation of MV and RS facilitated the efficient utilization of NRS by increasing NRS uptake of rice and recovery in soil.
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