文献类型： 外文期刊
作者： Li, Dongxue 1 ; Wang, Yiliu 1 ; Lu, Dianjun 1 ; Chen, Xiaoqin 1 ; Cui, Zhenling 3 ; Chen, Xinping 4 ; Lu, Jianwei 6 ; Nie, Jun 7 ; Wang, Huoyan 1 ; Zhou, Jianmin 1 ;
作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Coll Modern Agr Sci, Beijing 100049, Peoples R China
3.China Agr Univ, Natl Acad Agr Green Dev, Coll Resources & Environm Sci, Key Lab Plant Soil Interact,Minist Educ, Beijing 100193, Peoples R China
4.Southwest Univ, Coll Resources & Environm, Chongqing 400715, Peoples R China
5.Southwest Univ, Acad Agr Sci, Chongqing 400715, Peoples R China
6.Huazhong Agr Univ, Coll Resources & Environm, Dept Plant Nutr, Wuhan 430070, Peoples R China
7.Hunan Acad Agr Sci, Changsha 410125, Peoples R China
关键词： Bio-straw recycling; Fertilizer input; Green development; Greenhouse gas emission; Life cycle assessment
期刊名称：RESOURCES CONSERVATION AND RECYCLING （ 影响因子：13.2； 五年影响因子：13.4 ）
ISSN： 0921-3449
年卷期： 2023 年 190 卷
页码：
收录情况： SCI
摘要： Bio-straw is one of the valuable and renewable organic resources. China produces most of the world's bio-straw. Straw recycling is closely associated with global carbon and nitrogen cycles, agricultural productivity, and green development. We systematically integrated straw recycling systems from 1979 to 2019 into three major cereal crops to identify patterns of crop productivity and greenhouse gas (GHG) emissions in a life cycle assessment, and to explore GHG mitigation potential using scenario analyses. Straw recycling partially alleviated the negative potassium surplus caused by straw removal and increased wheat, maize, and rice yields by 7.8%, 5.2%, and 5.0%, respectively. We developed a new empirical model for nitrous oxide (N2O) and methane (CH4) emissions from straw recycling systems in regional crops. Straw recycling promoted direct N2O emissions from upland crops, especially maize. Nonetheless, straw recycling reduced net GHG emissions by 33.1% in wheat and 12.1% in maize due to high rates of soil carbon sequestration relative to inorganic fertilizer management alone. In rice, straw recycling depressed N2O emissions but increased net GHG emissions by 59.8% because CH4 emissions were 2.06 times greater than those under fertilizer management. When combined with optimal fertilizer inputs based on zero nutrient surplus, 100% straw recycling further reduced net GHG emissions by 28.0% in wheat and 19.5% in maize, whereas 60% straw recycling produced better results in rice (20.6% emissions reduction), in spite of increasing fertilizer-induced emissions. Enhancing the quantity and quality of straw recycling, based on crop-specific recycling targets, should contribute to the dual targets of achieving higher crop yields and green development.
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