摘要
为防止盆地低洼处出现盐渍化、节约水资源,用数值模拟和田间中子仪试验相结合的方法,研究了内蒙古孪井灌区包气带的水分运移规律。数学模拟结果与田间实测土壤含水率吻合良好。在此基础上模拟计算出漫灌与喷灌条件下不同灌溉量和不同蒸发量对水分运移的影响以及水分随时间在深度上的分布情况,结果表明1 200 m3/hm2喷灌定额下得农田水分无效消耗最小,从而得出节水高产的喷灌灌溉模式。
To prevent salinization from the center of basin and save water, both numerical simulation and field experiment methods are used to study the field moisture movement in unsaturated soils in Luanjing,Inner Mongolia. Compared of soil moisture between numerical simulation with field experiment data, the results are reliable. Based on the model, simulate the moisture movement and distribution with the variation of irrigation flux and evaporation under flooding and sprinkler irrigation condition, which results can be used for decision-making.
出处
《水土保持研究》
CSCD
北大核心
2005年第6期113-115,128,共4页
Research of Soil and Water Conservation
基金
国家自然科学基金项目(40272108)
关键词
土-水系统
包气带
数值模拟
水分运移
soil-water system
unsaturated zone
numerical simulation
water transport
