河北省中部平原区土壤墒情变化规律研究

采用衡水、冉庄、捷地3个旱情试验站2002-2005年4年土壤含水率资料，求算出了不同地区分深度逐月土壤含水率消退系数，拟合了不同地区的土壤雨后增墒公式，确定了3个试验站墒情变化规律，并利用2006年资料进行了验证．预报合格率达99％以上，达到甲级预报标准。3个试验站所代表区域的墒情变化规律的研究为河北省其它地区的墒情预报提供了依据。

Study on Variation Regularity of Soil Moisture Content in Hebei Middle Plain

According to the soil water content of three Drought Indicator Experimental Stations, Hengshui,Ranzhuang and Jiedi during 2002 to 2005, the paper figured out the depth soil water content retrogression coefficient in different areas, defined the formula of different area＇s soil moisture after the rain, ensured the experimental station＇s variation regularity of soil moisture content. It was tested by the data of 2006 that the qualified rate of prediction reached above 99%, which achieved a-grade forecast standard. The research on regional variation regularities of the moisture represented by the three Experimental Stations provided the basis for the moisture prediction of other regions in Hebei.