Improving the net energy and energy utilization efficiency of maize production systems in the North China Plain

文献类型： 外文期刊

第一作者： Wang, Hongzhang

作者： Wang, Hongzhang;Ren, Hao;Han, Kun;Li, Geng;Zhang, Jiwang;Zhao, Bin;Ren, Baizhao;Liu, Peng;Wang, Hongzhang;Ren, Hao;Han, Kun;Li, Geng;Zhang, Jiwang;Zhao, Bin;Ren, Baizhao;Liu, Peng;Zhang, Lihua;Zhao, Yali;Liu, Yuee;He, Qijin

作者机构：

关键词： Energy analysis; Yield; Nitrogen use efficiency; Integrated agronomic practices

期刊名称：ENERGY （ 影响因子：9.0； 五年影响因子：8.3 ）

ISSN： 0360-5442

年卷期： 2023 年 274 卷

页码：

收录情况： SCI

摘要： ever, the current research on agricultural sustainability in the North China Plain (NCP) mainly focuses on improving grain yield and nitrogen utilization efficiency (NUE), while there are few studies on their energy utilization. This study evaluated the energy utilization characteristics of different yield and NUE category farms and three integrated agronomic approaches in the NCP based on farmer surveys and farm experiments. Compared with the average level of smallholder farms, the net energy (NE) and the energy utilization efficiency (EUE) of high-yield and high-NUE group farms increased by 17% and 22%, respectively, the NE of the high-yield and low-NUE group farms increased by 9%, but the EUE decreased by 12%. The control experiment showed that the NE and EUE achieved using high-yield and high-efficiency agronomic practice (HH) increased by 34% and 18% compared with achieved using traditional farmers' practices, respectively. In conclusion, there is a great opportunity to improve the NE and EUE of the maize production in the NCP by optimizing agronomic practices. Popularizing HH technology by improving agricultural technology extension services is of great significance for improving farmers' EUE and promoting sustainable agricultural development.

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