蒸发条件下宁夏银北地区盐渍土水分运移数值模拟  

Study on Numerical Simulation Applicated in Movement of Water and Salt under Evaporation Condition in Yinbei Region of Ningxia Province

作　　者：赵文娟[1,2] 李春光[3] 

机构地区：[1]宁夏大学土木与水利工程学院,银川750021 [2]宁夏节水灌溉与水资源调控工程技术研究中心,银川750021 [3]北方民族大学土木工程学院,银川750021

出　　处：《湖北农业科学》2015年第15期3638-3641,共4页Hubei Agricultural Sciences

基　　金：国家自然科学基金项目(91230111);宁夏高等学校科学技术研究项目(NGY2014005)

摘　　要：对盐渍土中的水盐动态进行定量分析是提出适宜于宁夏银北地区盐渍土调控措施的基础工作。蒸发条件下土壤水分运动模拟初步研究表明,将有限体积法应用到求解蒸发条件下的土壤水分运动模拟计算中,模拟值与实测值吻合较好;春季土壤含水率模拟曲线在纵断面较为一致,地表蒸发量对0.2-0.6m的土壤含水率有较大的影响。It＇s the basis of the work to use the numerical simulation method for finding appropriate control measures in Yinbei region of Ningxia province. The results showed that there was a good agreement between simulated and measured values when the finite volume method was selected to simulate the movement of soil moisture evaporation. The simulated curve of soil moisture in the horizontal section was consistent with that of the real values. Surface evaporation had a greater impact on the soil moisture of 0.2-0.6 m.

关 键 词：土壤水分 蒸发 数值模拟 盐渍土 

分 类 号：S152.7[农业科学—土壤学]