灌溉排水学报2012，Vol.31Issue(3)：42-47,6.
涌泉根灌条件下土壤水分运动数值模拟研究
Numerical Simulation of Soil Water Movement under Bubbled Root Irrigation
摘要
Abstract
This paper built the numerical simulation model of soil water three-dimensional infiltration for Bubble Root Irrigation.Using HYDRUSE-3D software,the soil water movement under different flow conditions are analysised.The simulation results on soil moisture is very close to the laboratory tests.The maximum relative error between simulated and measured values is less than 12%.Based on the simulation results analysis the soil water movement under the condition of Bubble Root Irrigation,the effect of flux on wetting front migration rate and maximum horizontal diffusion radius were analysised.The results showed that the characteristics of soil water movement has grew larger as the flux was increased,the range was reduced over time,the position of the maximum horizontal diffusion radius of wetted body under the bottom of the hole 5 cm;At the same point,the wetting front reaches it would took shorter time as the flux was increased,the soil moisture content was greater,the rate of increasing was faster.关键词
涌泉根灌/土壤水分运动/数值模拟Key words
bubbled root irrigation/soil water movement/numerical simulation分类
农业科技引用本文复制引用
李耀刚,王文娥,胡笑涛,黎平..涌泉根灌条件下土壤水分运动数值模拟研究[J].灌溉排水学报,2012,31(3):42-47,6.基金项目
国家自然科学基金项目（51179163 （）
50909083） （）
“十二五”国家科技支撑计划项目 （）
