人民黄河2016，Vol.38Issue(4)：144-148,5.DOI:10.3969/j.issn.1000-1379.2016.04.035
基于HYDRUS的微润灌溉线源入渗数值模拟
Numerical Simulation of Line Source Infiltration Under Moisture Irrigation by HYDRUS
摘要
Abstract
Based on the theory of unsaturated soil water movement, a mathematical model of soil water movement under three kinds of water head pressure (i.e., 1.0m, 1.5m and 2.0m) was developed to explore the law of moisture irrigation infiltration in sandy loam. HYDRUS ( 2D/3D) software was used to solve the model. The solutions show that the moisture irrigation infiltration flow increases with the increase of pressure. The wet body was cylindrical distribution along the moisture and its size increased with the increase of pressure under the same irrigation time. The rate of wetting front migration decreased rapidly within 48h of irrigation and followed by steady gradually. The moisture content contour maps of the wet body were concentric circles centered on moisture. The average moisture content increased with the increase of pressure;however, irrigation uniformity decreased along with the increase of pressure. To test the accuracy of the software simulation, the results of field experiment were compared with the simulated values. The results indicate that the simulated and measured values have no significant difference. Therefore, HYDRUS software can be used to simulate the soil moisture movement rule under the conditions of moisture irrigation. And it's an effective tool for designing the irrigation strategies of the underground line source infiltration.关键词
微润灌溉/土壤水分运动/HYDRUS/数值模拟Key words
moisture irrigation/soil water movement/HYDRUS/numerical simulation分类
农业科技引用本文复制引用
陈高听,郭凤台,王利书,贾艳辉..基于HYDRUS的微润灌溉线源入渗数值模拟[J].人民黄河,2016,38(4):144-148,5.基金项目
河北省应用基础研究计划重点基础研究项目（14964206D－10）。 （）
