摘要
景电灌区是以农业经济为主的高扬程跨流域灌区,干旱缺水成为制约农作物高产稳产的主要因素,节水灌溉技术在景电灌区得到大力推广,合理的节水灌溉方式可以节约用水,提高单方水效益,有利于推进水资源集约节约利用和建设节水型灌区。如何科学合理地选择节水灌溉模式是目前迫切需要研究的问题。基于熵值法,从社会经济效益、生态环境效益等方面构建节水灌溉效益评价体系,对灌区主要作物进行了不同节水灌溉模式的效益分析。结果表明,高效节水灌溉效益普遍高于其他灌溉方式,而滴灌模式则是该地区最优节水灌溉模式。评价结果与实际基本一致,说明这种方法应用到灌区中评价效益是可行的,对灌区的综合评价具有指导意义。
Jingdian Irrigation Area is a high-lift cross-basin irrigation area with agricultural economy as the main,drought and water short⁃age have become the main factors restricting the high and stable yield of crops,water-saving irrigation technology has been popularized in Jingdian Irrigation Area,reasonable water-saving irrigation can save water,improve unilateral water efficiency,it is beneficial to promote the intensive and economical utilization of water resources and the construction of water-saving irrigation area.This paper is based on the en⁃tropy method,the evaluation system of water-saving irrigation benefit is constructed from the aspects of social economic benefit and ecologi⁃cal environmental benefit,the benefits of different water-saving irrigation modes for the main crops in irrigated areas are analyzed.The re⁃sults show that the efficiency of efficient water-saving irrigation is generally higher than other irrigation methods,drip irrigation is the best water-saving irrigation mode in this area.The evaluation results are basically consistent with the reality,it shows that this method is feasible to evaluate the benefit in irrigated areas,so it has a guiding significance to the comprehensive evaluation of irrigated areas.
作者
吴冠衡
高雅玉
杨红霞
WU Guan-heng;GAO Ya-yu;YANG Hong-xia(Gansu Jingtaichuan Electric Power Irrigation Water Resource Utilization Center,Baiyin 730400,Gansu Province,China;Lanzhou University of Technology,Lanzhou 730000,Gansu Province,China;Gansu Agricultural Reclamation and Improved Seed Co.,Ltd.,Baiyin 730400,Gansu Province,China)
出处
《中国农村水利水电》
北大核心
2024年第1期70-74,共5页
China Rural Water and Hydropower
基金
甘肃省水利科学试验研究及技术推广项目。
关键词
景电灌区
熵值法
节水灌溉
效益分析
Jingdian Irrigation Area
method of entropy
water-saving irrigation
benefit analysis
