甘肃省泾河流域典型灌区耗水系数监测试验研究  

Experimental Study on Monitoring Water Consumption Coefficient of Typical Irrigation Areas in Jinghe River Basin, Gansu Province

作　　者：雒仪 张德栋 马榕 朱晓涛 LUO Yi;ZHANG De-dong;MA Rong;ZHU Xiao-tao(Pingliang Hydrological Station of Gansu Province,Pingliang 744000,China;Gansu Hydrological Station,Lanzhou 730030,China;Dingxi Hvdrological Staticion of Gansu Province,Dingxi 743000,China)

机构地区：[1]甘肃省平凉水文站,甘肃平凉744000 [2]甘肃省水文站,甘肃兰州730030 [3]甘肃省定西水文站,甘肃定西743000

出　　处：《水电能源科学》2023年第2期53-56,60,共5页Water Resources and Power

基　　金：国家自然科学基金项目(41271092);甘肃省水利科学实验研究及技术推广项目(2020023)。

摘　　要：以甘肃省泾河流域为主要研究对象,选取泾河上游泾河南干渠灌区为典型试验灌区,对泾河南干渠灌区的灌溉退水、农田含水率、农作物生长趋势等进行监测,并采用引排差法与多层次土壤水分平衡模型(VSMB模型)相结合的方式,对泾河南干渠灌区的耗水量进行试验。根据监测试验,泾河南干渠灌区2018年总引水量2 076×104m3,总退水量523×104m3,采用引排差法得到泾河南干渠灌区耗水系数为0.56;甘肃农业大学试验田典型地块全年总引水量0.190 1×104m3,地表无退水,采用引排差法得到耗水系数为0.75,采用VSMB模型得到耗水系数为0.71。该研究结果可为泾河地区其他农业灌区耗水系数研究提供参考,对灌区规划设计和高效农业灌溉试点工作具有一定的指导意义。Taking Jinghe River Basin in Gansu Province as the main research object, the Jinghe River trunk canal irrigation area in the upper reaches of Jinghe River was selected as a typical experimental irrigation area. The irrigation return water, farmland water content and crop growth trend of Jinghe River trunk canal irrigation area were monitored. The water consumption of Jinghe River trunk canal irrigation area was tested by the combination of diversion and drainage difference method and multi-level soil water balance model(VSMB model). According to the monitoring experiment, the total water diversion volume of Jinghe River main canal irrigation area in 2018 is 20.76 million m~3, and the total water return volume is 5.23 million m~3. The water consumption coefficient of Jinghe River main canal irrigation area is 0.56 by using the diversion and drainage difference method. The total annual water diversion of typical plots in Gannong experimental field is 1 901 m~3, and there is no retreating water on the surface. The water consumption coefficient obtained by diversion and discharge difference method is 0.75, and the water consumption coefficient obtained by VSMB model is 0.71. The research results provide reference for the study of water consumption coefficient of other agricultural irrigation areas in Jinghe area, and have certain guiding significance for irrigation area planning and design and high-efficiency agricultural irrigation pilot work.

关 键 词：耗水系数 农业灌溉 泾河流域 监测试验 VSMB模型 

分 类 号：TV93[水利工程—水利水电工程] S274.4[农业科学—农业水土工程]