利用区域化的土壤水氮管理模型WNMM(Water Nitrogen Management Model),结合地理信息系统GIS,采用GIS外接专业模型的方法,对封丘地区土壤水分渗漏的时间和空间分布情况进行了模拟。结果表明,在一般降水年份下,该地区的2m土体的水分年渗漏量在175～231mm之间,而在降水较多年份下的水分渗漏则超过了300mm。土壤水分渗漏受土壤质地、降水和灌溉、作物生长情况、温度等因素影响,渗漏多发生于强降水或灌溉以后,且砂质土壤的水分渗漏量要多于其它土壤。 The temporal and spatial distribution of soil water leakage in Fengqiu area was simulated by using the regional water-nitrogen management model (WNMM) combined with geographic information system (GIS) and GIS external professional model. The results show that under the general precipitation years, the annual water leakage of 2m soil in this area is between 175 ~ 231mm, while the water leakage in more years of precipitation is more than 300mm. Soil water leakage is affected by soil texture, precipitation and irrigation, crop growth and temperature, and the leakage mostly occurs after heavy rainfall or irrigation, and sandy soil has more water leakage than other soils.