中文摘要：

利用室内模拟试验系统,对塔克拉玛干沙漠腹地风沙土在滴灌条件下的水分入渗与水分再分布过程中湿润锋的运动规律进行了模拟试验研究。根据模拟试验描述了风沙土在滴灌条件下水分入渗与再分布情况下湿润体的形状变化,研究了在水平方向上与垂直方向上风沙土的湿润锋推进规律及运动特征,揭示了随着累计入渗量的增加,湿润锋推进过程在入渗初期速率较大,逐渐成减小趋势,并最终达到稳定入渗状态;在土壤水分再分布过程中土壤湿润锋面不断向外部推移,最后达到相对稳定;对风沙土水分入渗及再分布过程中其湿润锋的推进距离与时间做了函数关系拟合,其中乘幂函数关系式拟合最好。

英文摘要：

Laws of water infiltration and soil water redistribution in aeolian sandy soil were studied through outdoor. soil column simulated experiments. According to the determined result, the text described the shape change of wetted volume in soil water infiltration and soil water redistribution period, and analyzed characteristics and laws of wetting front movement. The results showed that the wetting front movement possesses are gradually fasted in the beginning of water infiltration and become slower in anaphase under the drip irrigation. After stopping irrigating, wetting front is passing to the outside constantly and stable to reach finally. In the end the relation about wetting front distance and time was simulated and it conformed to power function laws.