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Effect of soybean inclusion in cropping systems on productivity, profitability, and carbon footprints: A case study from the Huang-Huai-Hai Plain

文献类型： 外文期刊

作者： Yang, Lei 1 ; Jin, Wenjun 1 ; Chen, Xiaofei 1 ; Song, Wenwen 2 ; Yang, Yadong 3 ; Zhou, Jie 4 ; Kong, Lingcong 1 ; Huang, Zhiping 1 ; Liu, Ruixian 5 ; Du, Xiangbei 1 ;

作者机构： 1.Anhui Acad Agr Sci, Crop Res Inst, 40 Nongke South Rd, Hefei 230031, Anhui, Peoples R China

2.Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China

3.China Agr Univ, Coll Agron & Biotechnol, State Key Lab Maize Biobreeding, Beijing 100193, Peoples R China

4.Nanjing Agr Univ, Coll Agr, Nanjing 210095, Peoples R China

5.Jiangsu Acad Agr Sci, Inst Ind Crops, Nanjing 210095, Peoples R China

关键词： Cropping system; Soybean inclusion; Energy budgeting; Carbon footprint; Sustainability

期刊名称：ENERGY （ 影响因子：9.4； 五年影响因子：8.8 ）

ISSN： 0360-5442

年卷期： 2025 年 316 卷

页码：

收录情况： SCI

摘要： The intensive wheat-maize (W-M) rotation in the Huang-Huai-Hai Plain faces ecological challenges. Introducing legumes into cropping systems is a promising strategy for sustainability, but its effect on productivity and profitability remains uncertain. A two-year experiment examined the effects of three double-cropping systems (Wheat-Soybean, W-S; Wheat with an intercrop of Maize and Soybean, W-M/S; and W-M) on productivity, energy balance, carbon footprint (CF), economic returns, and sustainability. Results showed that, compared to WM, the pre-crop effect of soybean in W-S and W-M/S increased subsequent wheat yield by 8.8 % and 3.6%, respectively; W-M/S improved annual yields of grain, maize equivalent, and energy by 3.6%, 17.5%, and 6.7%, whereas W-S decreased them by 28.6%, 5.3%, and 25.2%; due to lower inputs, W-S reduced CFs by 19.8%- 42.8%; with higher yields and soil organic carbon storage, W-M/S increased net energy, return, and carbon by 5.1%, 9.4%, and 4.3%, while reducing CFs by 19.3%-31.3%, resulting in a 43.2% rise in the sustainability index. In summary, introducing soybeans into cropping systems-either as an intercrop or in rotation-can maintain soil organic carbon and reduce CFs. Moreover, W-M/S can enhance productivity and profitability, making it a more sustainable, efficient, and cleaner system for the Huang-Huai-Hai Plain.

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