Substituting soybean for summer maize with optimal nitrogen fertilization enhances subsequent wheat yield and nitrogen use efficiency in semi-humid regions
文献类型: 外文期刊
作者: Haiqiang Luo;Gaoxiang Liu;Tianxiang Qi;Nan Cui;Binglin Xie;Yingzhou Xiang;Enke Liu;Medelbek Meruyert;Ansabayeva Assiya;Zhikuan Jia;Kadambot H.M. Siddique;Peng Zhang
作者机构:
关键词: Crop rotation;Fertilization;N utilization;Soybean inclusion;Yield
期刊名称: Soil and Tillage Research
ISSN: 0167-1987
年卷期: 2025 年 252 卷
页码:
收录情况: SCIE(2025版) ; ; EI(2025版)
摘要: Leguminous crops are beneficial for enhancing crop yields and agricultural sustainability. However, the impacts of legume crops with optimal nitrogen (N) fertilization on the subsequent crop yield and N use efficiency (NUE) are unclear. Thus, a two-year field experiment was conducted to explore the effects of three cropping systems (FW: fallow–wheat, SW: soybean–wheat, and MW: maize–wheat) and three N fertilization rates (N0: 0 kg N ha–1, N1: 125 kg N ha–1, and N2: 225 kg N ha–1) on the soil N accumulation, grain yield (GY), and N utilization during the winter wheat season in a semi-humid region. Our findings showed that the soil N accumulation, dry matter accumulation (DMA), GY, and NUE were highest for wheat under SW, where the GY and NUE for winter wheat were 19.29 % and 46.42 % higher than the average values under FW and MW, respectively (P < 0.05). In addition, the soil N accumulation and GY for winter wheat both increased significantly under FW and MW as the N fertilization rate increased (P < 0.05). However, with SW, there was no significant (P > 0.05) difference in the winter wheat GY under SWN1 compared with SWN2, but the residual soil N (NO3–-N and NH4+-N) decreased by 16.59 % and NUE increased by 76.19 %. In conclusion, SW combined with reduced N fertilization in a double-cropping system can enhance the subsequent winter wheat yield and NUE in semi-humid regions by increasing the accumulation and supply of soil N.
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