寒旱农业科学2026，Vol.5Issue(1)：38-43,6.DOI:10.3969/j.issn.2097-2172.2026.01.006
河西绿洲灌区间作绿肥替代部分氮肥对玉米生产经济可行性的研究
Study on the Economic Feasibility of Green Manure Intercropping to Partially Replace Nitrogen Fertilizer in Maize Production in the Hexi Oasis Irrigation Areas
摘要
Abstract
This study investigated the economic feasibility of using green manure to partially replace nitrogen fertilizer,providing a scientific basis for improving regional maize production systems and promoting sustainable agricultural development.To deal with the prominent issues of excessive dependence on nitrogen fertilizer and water resource scarcity in maize production in the Hexi Oasis Irrigation Areas,a field experiment was conducted to determine the effect of intercropping green manure as a partial replacement for nitrogen fertilizer on maize yield,economic benefits,and unit water efficiency under 3 planting modes of maize‖common vetch,maize‖rapeseed,and maize monoculture,as well as 2 nitrogen application levels of 25%nitrogen reduction(270 kg/ha)and conventional nitrogen application(360 kg/ha).Results showed that green manure intercropping effectively mitigated the risk of yield reduction caused by nitrogen reduction,thereby ensuring stable maize yield and significantly improving the economic benefit of the cropping system.Among the treatments,maize‖rapeseed with conventional nitrogen application achieved the highest net income,increasing by 11.1%compared with maize monoculture under conventional nitrogen application,followed by maize‖rapeseed with a 25%nitrogen reduction,which increased net income by 7.1%compared with maize monoculture under conventional nitrogen application.The unit water efficiencies of all green manure intercropping treatments were superior to that of maize monoculture.The maize‖common vetch system with a 25%nitrogen reduction performed the best,improving unit water efficiency by 29.3%,followed by maize‖rapeseed with a 25%nitrogen reduction,which increased it by 24.8%,compared with those of maize monoculture under conventional nitrogen application.Therefore,reducing nitrogen fertilizer application by 25%through maize-green manure intercropping can not only maintain stable maize yield but also enhance the economic conversion efficiency of water,representing an important technical approach for improving maize production efficiency and reducing costs in the Hexi Oasis Irrigation Areas.关键词
玉米‖绿肥/减量施氮/产量/经济效益/产投比/单方水效益Key words
Maize‖green manure intercropping/Reduced nitrogen application/Yield/Economic benefit/Output-input ratio/Unit water efficiency分类
农业科技引用本文复制引用
张敏,殷文,胡发龙,陈桂平..河西绿洲灌区间作绿肥替代部分氮肥对玉米生产经济可行性的研究[J].寒旱农业科学,2026,5(1):38-43,6.基金项目
甘肃省大学生创新创业训练计划项目(S202510733045). （S202510733045）
