蓄水坑灌条件下土壤水分运动的数值模拟  

Numerical simulation for soil water movement of water-storage-pit irrigation

作　　者：周青云[1] 孙西欢[2] 康绍忠[1] 

机构地区：[1]中国农业大学中国农业水问题研究中心,北京100083 [2]太原理工大学水利科学与工程学院,山西太原030024

出　　处：《水利学报》2006年第3期342-347,353,共7页Journal of Hydraulic Engineering

基　　金：国家自然科学基金项目(5037903150339030)

摘　　要：本文以非饱和土壤水分运动理论为基础,根据蓄水坑灌法土壤水分入渗的特点,建立了蓄水坑灌条件土壤水分运动的数学模型,并用有限差分法进行求解。同时用试验资料对模型进行验证,并用模型计算结果分析了蓄水坑灌条件下土壤初始含水率对土壤水分分布的影响,能为蓄水坑灌法的合理设计提供了一定的参考。Based on the theory for water movement in non-saturated soil. the mathematical model of water infiltration of water-storage-pit irrigation was established.The model is solved by the finite differential method. The validity of the model is verified by experiment data. On this basis, the model is applied to analyze the effect of initial soil water content on soil water distribution. The simulation result is helpful in reasonable design of the storage-pit-irrigation system.

关 键 词：蓄水坑灌法 土壤水分运动 数值模拟 有限差分法 

分 类 号：S152.7[农业科学—土壤学]