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Converting maize production with low emergy cost and high economic return for sustainable development

文献类型： 外文期刊

作者： Wang, Xingya 1 ; Tan, Weiming 1 ; Zhou, Shunli 1 ; Xu, Yang 2 ; Cui, Tao 2 ; Gao, Hong 3 ; Chen, Mingli 3 ; Dong, Xuehui; 1 ;

作者机构： 1.China Agr Univ, Coll Agron & Biotechnol, 2 Yuanmingyuan West Rd, Beijing 100193, Peoples R China

2.China Agr Univ, Coll Engn, 17 Qinghua East Rd, Beijing 100083, Peoples R China

3.Heilongjiang Acad Agr Sci, Inst Plant Protect, 67 Xiangfu Rd, Xiangfang Dist 154007, Haerbin, Peoples R China

4.Chinese Acad Sci, Ctr Agr Resources Res, Inst Genet & Dev Biol, Shijiazhuang 050021, Hebei, Peoples R China

5.Qingdao Agr Univ, Coll Agron, 700 Changcheng Rd, Qingdao 266109, Peoples R China

6.Sichuan Agr Univ, Coll Agron, 211 Huimin Rd, Chengdu 611130, Peoples R China

7.Huazhong Agr Univ, Coll Plant Sci & Technol, 1 Shizishan Rd, Wuhan 430070, Peoples R China

8.Beijing Univ Agr, 7 Beinong Rd, Beijing 100096, Peoples R China

9.Southwest Univ, Coll Resources & Environm, Chongqing 400716, Peoples R China

关键词： Emergy assessment; Cropping system; Adapted hybrid; Sustainable agriculture

期刊名称：RENEWABLE & SUSTAINABLE ENERGY REVIEWS （ 影响因子：14.982； 五年影响因子：14.916 ）

ISSN： 1364-0321

年卷期： 2021 年 136 卷

页码：

收录情况： SCI

摘要： Promoting more sustainable agriculture while simultaneously meeting the increased demands for food due to the growing population is a great challenge in the 21st century. Here we addressed this challenge by conducting on-farm field experiments at 40 sites across the broad aro-ecological maize region in China during 2017-2018. According to a modern understanding with emergy and economic aspects, a set of new variety-based low emergy system was developed. Compared with the current traditional farmers' system, the new system improved the sustainability (emergy sustainability index) by 19% and increased economic return by 47% while similar productivity (maize yield) was achieved. More than 80% of the modeled yield potential was realized. Moreover, the decrease of nonrenewable materials input in the new system contributed to 88% of the sustainability improvement. As food and resource concerns become more severe in many global regions, this new system is likely to supply a typical case and could be adopted widely to realize the United Nations Sustainable Development Goals (SDGs) in agricultural transformation.

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