塑料暗管排降条件下麦田土壤水分变化规律模拟  

Simulation of soil moisture regime fluctuation in the winter wheat and barley field under PVC subdrainage

作　　者：邵孝侯[1] 王靖波[2] 刘才良[1] 刘新仁[1] 

机构地区：[1]河海大学农田水利工程系,南京210098 [2]江苏靖江市水利局,靖江214500

出　　处：《南京农业大学学报》2000年第2期47-52,共6页Journal of Nanjing Agricultural University

基　　金：国家自然科学基金! (5 930 90 92 );博士后基金及国家"九五"攻关! (96 0 0 6 0 2 0 2 )资助项目

摘　　要：应用非饱和土壤水分运动原理 ,对塑料暗管排水条件下分层土壤的水分运动进行了数值模拟 ,建立了数学模型。结果表明 ,模型计算的土壤水分分布结果和田间实测的土壤剖面水分数据一致 。Numerical simulation on moisture regime in heterogeneous soils under PVC subdrainage conditions was conducted and mathematical model was established based on the mechanism of unsaturated soil water dynamics in this paper.The results showed that soil water contents in profile calculated by the model well fitted the data obtained by in situ measurement.The field waterlogging situations could be determined at different falling rates of subsurface water table under any meterological boundary condition by use of the model.

关 键 词：塑料暗管 排降 土壤水分 模拟 麦田 

分 类 号：S276.79[农业科学—农业水土工程]