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Position: Home > Articles > Analysis on the Seepage from Root Zone of Winter Wheat Based on Hydrus-1D Journal of Irrigation and Drainage 2011,30 (3) 96-101

基于Hydrus-1D模型的冬小麦根系层水分渗漏分析

作  者:
张志悦;陈皓锐
单  位:
武汉大学水资源与水电工程科学国家重点实验室;沧州水文水资源勘测局
关键词:
Hydrus-1D模型;冬小麦;根系层水分渗漏;影响因素
摘  要:
利用Hydrus-1D模型模拟了河北省石津灌区冬小麦水分渗漏情况。结果表明,研究区40%的灌溉降雨量和38%的总供水量流出了200 cm边界层,通过设置12种方案得到初始饱和度、2次春灌水量是影响灌区渗漏的主要因素,而二水时间间隔和第一水灌水日期影响相对较小。通过设置426种方案,分别得到了不同初始饱和度时,2次春灌灌水量与2个渗漏比例的关系,以及土壤储水量与日渗漏强度的指数关系式。
译  名:
Analysis on the Seepage from Root Zone of Winter Wheat Based on Hydrus-1D
作  者:
ZHANG Zhi-yue1,CHEN Hao-rui2 (1.Bureau of Hydrology of Cangzhou,Cangzhou 061000,China;2.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,China)
关键词:
Hydrus-1D;winter wheat;seepage from root zone;influence factors
摘  要:
A field model was established based on Hydrus-1D software package to simulate the winter wheat root zone percolation in Shijin Irrigation Scheme(SIS) in Hebei province,the results showed that 40% of the volume of irrigation-precipitation and 38% of the total water supply discharged from the root zone of 200 cm soil depth.Initial saturation and spring-irrigation volume mainly account for the differences of percolation in SIS,while the date of 1st spring-irrigation and time interval of two spring-irrigations were not the dominating factors.The function between spring-irrigation volume and root percolation fractions,as well as the exponential function between seepage intensity and soil water storage of 200 cm,were built based on 426 scenarios.

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