文献类型： 外文期刊

第一作者： Liu, Zheng

作者： Liu, Zheng;Zhou, Wenli;Wang, Zhi;Zhao, Yao;Cheng, Jiahui;Wang, Xinbing;Zhou, Baoyuan;Ding, Zaisong;Li, Congfeng;Mi, Guohua

作者机构：

关键词： Efficiency-enhanced nitrogen fertilizer; Maize; Greenhouse gas; Nitrogen loss; Trade-offs

期刊名称：AGRICULTURAL SYSTEMS （ 影响因子：6.1； 五年影响因子：7.0 ）

ISSN： 0308-521X

年卷期： 2025 年 230 卷

页码：

收录情况： SCI

摘要： CONTEXT: Maize is crucial for global food security. China's Golden Maize Belt is a major maize production area. However, the sustainability of maize production in this region faces challenges from high nitrogen fertilizer application, low utilization efficiency, and severe nitrogen loss. The use of efficiency-enhanced nitrogen fertilizers, such as controlled-release fertilizer and that containing nitrification inhibitor etc. normally increases nitrogen use efficiency, yet this might have limited economic benefits due to high costs although its benefits in term of ecology and human health could be foreseen. OBJECTIVE: This study aimed to evaluate the environmental and economic impacts of efficiency-enhanced nitrogen fertilizers in maize production, further developing a policy framework for sustainable agriculture. METHODS: A split-plot field experiment was conducted with nitrogen fertilizer types as the main plots (including no nitrogen application, application of common urea and application of mixture with 50 % common urea and 50 % controlled-release urea), and nitrification inhibitor as the sub-plots (including no application and application of 3,4-dimethylpyrazole phosphate). Maize productivity, agronomic nitrogen use efficiency, nitrogen-saving potential, greenhouse gas emissions, and eco-economic benefits were measured. RESULTS AND CONCLUSIONS: The efficiency-enhanced nitrogen fertilizers significantly increased maize productivity by 3.1 %-11.4 % and agronomic nitrogen use efficiency by 7.3 %-26.8 % compared with common urea, with the controlled-release urea having a more prominent effect on grain yield. They also significantly reduced global warming potential by 11.0 %-24.7 % and greenhouse gas intensity by 10.2 %-29.1 %. However, the combined application of controlled-release urea and nitrification inhibitor had a subadditive effect on greenhouse gas mitigation. Addition of nitrification inhibitor leads to similar economic input (34.3 versus 34.5 $ ha-1) from the farmer, lower ecological premium paid by the government and the public (105.8 versus 151.0 $ ha-1), and a higher return on investment (4.2 versus 2.5) in maize production compared with controlled-release urea, which is therefore readily acceptable to all parties involved. Although the combined use of efficiency-enhanced nitrogen fertilizers brought ecological benefits of 248.9 $ ha-1, farmers needed economic support from the government and the public of 97.9 and 104.9 $ ha-1. SIGNIFICANCE: This study is novel in comprehensively quantifying the impacts of the efficiency-enhanced nitrogen fertilizers on maize production and greenhouse gas emission, and proposes a cost-sharing policy framework for sustainable agriculture.

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