Maximizing Grains While Minimizing Yield-Scaled Greenhouse Gas Emissions for Wheat Production in China
文献类型： 外文期刊
作者： Miao, Qi 1 ; Sun, Yixiang 2 ; Ma, Wenqi 3 ; Wang, Guiliang 4 ; Wu, Liang 5 ; Chen, Xinping 6 ; Tian, Xingshuai 1 ; Yin, Yulong 1 ; Zhang, Qingsong 1 ; Cui, Zhenling 1 ;
作者机构： 1.China Agr Univ, Coll Resources & Environm Sci, State Key Lab Nutrient Use & Management, Beijing 100193, Peoples R China
2.Anhui Acad Agr Sci, Inst Soil & Fertilizer, Hefei 230031, Peoples R China
3.Hebei Agr Univ, Coll Resources & Environm Sci, Baoding 071001, Peoples R China
4.Yangzhou Univ, Coll Environm Sci & Engn, Yangzhou 225009, Peoples R China
5.Xinyangfeng Agr Technol Co Ltd, Key Lab Crop Specif Fertilizer, Minist Agr & Rual Affairs, Jingmen 448001, Peoples R China
6.Southwest Univ, Coll Resources & Environm, Chongqing 400716, Peoples R China
7.Southwest Univ, Acad Agr Sci, Chongqing 400716, Peoples R China
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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