数字农科院2.0

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： Qianyu Fan;Jiancheng Xie;Jintao Du;Huanyu Ge;Cuilan Wei;Hao Qian;Hai Liang;Jun Nie;Feng Hu;Songjuan Gao;Weidong Cao

作者机构：

关键词： 15N dual-label;Milk vetch;N utilization;Rice N uptake;Rice straw

期刊名称： European Journal of Agronomy

ISSN： 1161-0301

年卷期： 2025 年 164 卷

页码：

收录情况： SCIE（2025版）

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 co-incorporation 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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