中文摘要：

基于Gardner表征的土壤水分特征曲线和Russo表征的非饱和土壤导水率形式，推导了负水头下水分入渗累计入渗量、入渗率、湿润峰以及入渗时间之间的理论关系，分析了负水头下水分入渗土壤含水量剖面分布以及剖面含水量的预测。并利用实验的数据验证了这些变量的关系，验证结果表明这些关系是合理的。

英文摘要：

Based on the soil water retention function of Gardner and the hydraulic conductivity thnction of Russo, theoretical relationships were developed to describe cumulative infiltration, infiltration rate, and wetting front under one dimensional water flow under a boundary condition of negative hydraulic heads. Lab experiments were conducted to measure infiltration data under various conditions. The theoretical relationships were shown to be reasonable based on the experiment data.