Integrated Effects of Straw Incorporation and N Application on Rice Yield and Greenhouse Gas Emissions in Three Rice-Based Cropping Systems
文献类型： 外文期刊
作者： Bankole, Oluwaseyi Oyewale 1 ; Danso, Frederick 1 ; Zhang, Nan 1 ; Zhang, Jun 1 ; Zhang, Kun 3 ; Dong, Wenjun 4 ; Lu, Changying 5 ; Zhang, Xin 1 ; Li, Gexing 1 ; Raheem, Abdulkareem 1 ; Deng, Aixing 1 ; Zheng, Chengyan 1 ; Song, Zhenwei 1 ; Zhang, Weijian 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, Key Lab Crop Physiol & Ecol, Beijing 100081, Peoples R China
2.Nanjing Agr Univ, Jiangsu Collaborat Innovat Ctr Modern Crop Prod, Key Lab Crop Physiol & Ecol, Southern China, Nanjing 210095, Peoples R China
3.Jiangxi Inst Red Soil, Natl Engn & Technol Res Ctr Red Soil Improvement, Nanchang 331717, Peoples R China
4.Heilongjiang Acad Agr Sci, Cultivat & Farming Res Inst, Harbin 150086, Peoples R China
5.Jiangsu Acad Agr Sci, Inst Agr Sci Taihu Lake Dist, Suzhou 215100, Peoples R China
6.Xinyang Acad Agr Sci, Xinyang 464000, Peoples R China
7.Jiangsu Univ, Engn Res Ctr Green Technol & Contingency Managemen, Zhenjiang 212013, Peoples R China
关键词： straw; N fertilizer; rice yield; CH4 emissions; yield-scaled emissions; mcrA; cropping systems
期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）
ISSN：
年卷期： 2024 年 14 卷 3 期
页码：
收录情况： SCI
摘要： Crop straw and N fertilizer applications impact paddy rice yield and greenhouse gas (GHG) emissions. However, their interactive effects have not been well documented. This study investigated the effects of straw (S), no straw incorporation (NS), and three levels of N fertilization rates (N0, N1, and N2) on single rice (SR), double rice (DR), and rice-wheat (RW) cropping systems. Straw incorporation significantly increased total CH4 emissions by 118.6%, 8.0%, and 79.0% in the SR, DR, and RW, respectively, compared to the NS. The total GHG emissions in DR are significantly 72.6% and 83.5% higher than those in RW and SR, respectively. Compared to NS, straw incorporation significantly increased yield-scaled emissions by 27.8%, 15.0%, and 89.0% in SR, DR, and RW, respectively. Straw with N application significantly increased average rice yield over N1 and N2 by 39.4%, 50.0%, and 6.7% in SR, DR, and RW, respectively. There was a significant correlation between methyl coenzyme M reductase (mcrA) and CH4 emissions in r(SR) = 0.87 (p < 0.05) and r(RW) = 0.85 (p < 0.05), except in r(DR) = 0.06 (p > 0.05). This study scientifically supports straw incorporation combined with a moderate N application rate in rice-based cropping systems to maintain high rice yields and mitigate GHG emissions.
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