数字农科院2.0

Long-term evidence that controlled-release urea enhances yield and soil fertility while mitigating environmental impacts in double-season rice

文献类型： 外文期刊

作者： Fu, Yifan;Yang, Wei;Zhang, Meng;Wu, Xiangning;Yang, Guodong;Xiang, Hongshun;Du, Chanchan;Zhu, Jinjuan;Yang, Chen;Wan, Yunfan;Peng, Shaobing;Li, Yu'e;Wang, Bin;Yuan, Shen

作者机构：

关键词： Double-season rice;Long-term experiment;Resin-coated controlled-release urea;Soil fertility;Yield

期刊名称： FIELD CROPS RESEARCH

ISSN： 0378-4290

年卷期： 2026 年 338 卷

页码：

收录情况： SCIE（2025版）

摘要： Context: Nitrogen (N) is essential for rice production but often exhibits low use efficiency and substantial environmental losses, especially in intensive double-season rice system. Resin-coated controlled-release urea (CRU) has the potential to better synchronize N release and crop demand; however, its long-term impacts on soil health, agronomic performance, and environmental outcomes remain insufficiently understood. Objective: This study assessed the long-term effects of CRU compared to conventional urea (CK) on rice yield, soil properties, nutrient use efficiency, and environmental sustainability in double-season rice. Methods: A 13-year field experiment (2012-2024) was conducted in central China with CRU and CK in both early and late-season rice. Measurements included soil physicochemical properties, yield and yield components. and nutrient uptake. Metrics such as partial factor productivity of fertilizer; physiological efficiency; nutrient harvest index, N balance; and carbon and N sequestrations were also calculated. Results and discussion: Both treatments improved soil fertility over time, but CRU led to substantially greater gains - increasing soil organic carbon (+54.9 %), total N (+53.8 %), and total phosphorus (+27.0 %) relative to initial soil status. Compared to CK, CRU increased carbon and N sequestration by 17.6 % and 13.1 %, respectively; increased rice yields by 13.1 % in the early-season rice and 15.5 % in the late-season rice, driven by improvements in both source and sink capacity; increased total N, P, and K uptake by 21.0-22.9 %; and improved partial factor productivity of fertilizer by 13.2-15.5 %. Moreover, CRU reduced N surplus by 24.8-38.9 % and achieved a tighter alignment between N balance and yield, indicating simultaneous gains in crop productivity and environmental performance over CK. Significance: This long-term study demonstrates that under the specific soil and climatic conditions tested, CRUbased N management enhances soil health, rice yield, and nutrient use efficiency, while reducing N losses and associated environmental risks. The findings provide robust evidence supporting CRU as a key technology for the sustainable intensification of rice production in intensive double-season rice system.

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