文献类型： 外文期刊

作者： Zhang, Xin ¹ ; Qian, Haoyu ² ; Hua, Keke ³ ; Chen, Huan ⁴ ; Deng, Aixing ² ; Song, Zhenwei ² ; Zhang, Jun ² ; Raheem, Abdulkareem ⁵ ; Danso, Frederick ² ; Wang, Daozhong ³ ; Zheng, Chengyan ² ; Zhang, Weijian ² ;

作者机构： 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Engn Lab Improving Qual Arable Land, Beijing 100081, Peoples R China

2.Chinese Acad Agr Sci, Inst Crop Sci, Minist Agr & Rural Affairs, Key Lab Crop Physiol & Ecol, Beijing 100081, Peoples R China

3.Anhui Acad Agr Sci, Soil & Fertilizer Res Inst, Hefei 230031, Peoples R China

4.Anhui Acad Agr Sci, Crop Res Inst, Hefei 230031, Peoples R China

5.Fed Univ Technol Akure, Lab Geoecol & Sustainable Food Syst, Akure, Akure Ondo Stat, Nigeria

6.Vietnam Country Off, Int Rice Res Inst, Hanoi, Vietnam

关键词： Greenhouse gas emissions; Crop straw; Manure; Net ecosystem economic benefit; Soybean-wheat system

期刊名称：AGRICULTURE ECOSYSTEMS & ENVIRONMENT （ 影响因子：6.576； 五年影响因子：7.088 ）

ISSN： 0167-8809

年卷期： 2022 年 325 卷

页码：

收录情况： SCI

摘要： Organic amendment often affects both crop yield and greenhouse gas (GHG) emission. Yet the impact of organic amendment on yield gains and GHG emissions is still unclear, particularly in long-term soybean-wheat cropping system. Based on a 30-year soybean-wheat cropping system experiment, the impact of organic amendments (i.e. straw and manure) on soil properties, crop yield, N2O and CH4 emissions, and net ecosystem economic budget (NEEB) were investigated. The treatments were: chemical NPK fertilizer (NPK), chemical NPK plus low amount of wheat straw (NPKLS), chemical NPK plus high amount of wheat straw (NPKHS), chemical NPK plus pig manure (NPKPM), chemical NPK plus cattle manure (NPKCM), and a control with no fertilizer applied (CK). The long-term straw and manure amendments enhanced soybean yield by 13.1% and 44.0%, and improved wheat yield by 6.4% and 9.9%, respectively. Meanwhile, they stimulated N2O emissions by 25.1% and 49.0% respectively, without significant effect on CH4 emissions, compared to the chemical NPK fertilizer treatment (NPK). The results of structural equation model showed that soil properties tested explained 76% of the variations observed in N2O emissions, which were directly affected by soil nitrification capacity, pH and denitrification capacity. Although straw and manure amendments increased the total GHG emissions investigated by 25.7% and 48.6% respectively, they showed insignificant effects on the greenhouse gas intensity (GHGI), and increased NEEB by 8.6% and 21.1%, respectively, compared to the NPK treatment. This indicates that the benefits arising from crop yield improvement through the use of organic amendments can cover the carbon fees caused by increased GHG emissions. Our findings suggest that organic amendment can be an effective strategy to simultaneously increase crop yield while mitigating greenhouse gas emissions from the perspective of carbon fees.