基于Hydrus-1D模型的大安灌区旱田灌溉入渗补给研究  

Study on recharge from dry farmland irrigation based on the Hydrus- 1D model in Da'an irrigation district

作　　者：卞建民[1] 李育松[1] 胡昱欣[1] 李宏亮[1,2] 

机构地区：[1]吉林大学环境与资源学院,吉林长春130021 [2]辽宁地质工程勘察施工集团公司,辽宁沈阳110032

出　　处：《干旱地区农业研究》2014年第2期191-195,共5页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金项目(41072255);吉林省自然科学基金项目(201115035)

摘　　要：以吉林省大安灌区为研究对象,在野外调查和资料收集的基础上,借助Hydrus-1D模型,模拟分析了旱田(玉米地)灌溉条件下地下水入渗补给过程。结果表明:模拟期间蒸散发动态变化较大,蒸腾量约为蒸发量的2.18倍,玉米生育期内,土壤水分蒸腾损失约占蒸散发消耗的79.74%,蒸散发在作物生长旺季以蒸腾为主,其它时段则以蒸发为主;旱田灌溉条件下,降水灌溉大量入渗形成土壤水,土壤水与地下水发生双向的、动态的水量频繁交换,模拟中地下水入渗补给量约为33.63 mm,入渗比为5.21%,其与研究区细密的包气带介质岩性有关。研究成果可为进一步开展旱田灌溉合理方案的制定提供科学依据。Based on field investigations and data collection ,the process of groundwater recharge under irrigation in the dry farmland （maize field） in Da’an Irrigation District in Jilin Province was analyzed using the Hydrus -1D model . The result shows that evapotranspiration dynamic change is evident during the simulation ,transpiration is about 2 .18 times of evaporation ,soil water transpiration loss accounts for about 79 .74% of the evapotranspiration consumption in maize growth period ,the preponderance is transpiration among evapotranspiration in crop growth season ,other time is e-vaporation ;many precipitation and irrigation water infiltrates into soil water under irrigation in the dry farmland ,soil wa-ter and groundwater transforms quite frequently ,water quantity exchange is bidirectional and dynamic ,the total ground-water recharge is about 33 .63 mm during the simulation ,infiltration ratio is 5 .21% .the amount is relevant to fine aera-tion zone medium of study area .This research may offer scientific evidence to schedule reasonable irrigation scheme in dry farmland further .

关 键 词：大安灌区 Hydrus -1D 模型 旱田灌溉 入渗补给 

分 类 号：S274[农业科学—农业水土工程]