Maximizing Grains While Minimizing Yield-Scaled Greenhouse Gas Emissions for Wheat Production in China

文献类型： 外文期刊

第一作者： Miao, Qi

作者： Miao, Qi;Tian, Xingshuai;Yin, Yulong;Zhang, Qingsong;Cui, Zhenling;Sun, Yixiang;Ma, Wenqi;Wang, Guiliang;Wu, Liang;Chen, Xinping;Chen, Xinping

作者机构：

关键词： nitrogen management; water management; grain yield; soil productivity; greenhouse gas; environment impact

期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN：

年卷期： 2023 年 13 卷 11 期

页码：

收录情况： SCI

摘要： Researchers have previously described the response of crop productivity and greenhouse gas (GHG) emissions to fertilizer nitrogen (N) additions, but they have not determined how to maximize yields while minimizing GHG emissions. We conducted an experiment at 2293 sites with four N levels to simulate both grain yield and yield-scaled GHG emissions in response to the N addition. The yield-scaled GHG emissions decreased by 16% as the N rate increased from treatments without the N addition to the minimum yield-scaled GHG emissions, which was comparable to the values associated with the maximum grain yields. The sites with both high soil productivity and high crop productivity had the highest yield and lowest yield-scaled GHG emissions, with 43% higher yield and 38% lower yield-scaled GHG emissions than sites with low soil and low crop productivity. These findings are expected to enhance evaluations of wheat production and GHG emissions in China, and thereby contribute to addressing disparities in the global food and GHG budget.

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