Abstract: In order to forecast the tendency of soil moisture content during of the critical period of spring sowing accurately,to provide the advanced,scientific and accurate decision making information for the government department in instructing the spring sowing,the relationship between the soil moisture content during the critical period of spring sowing and the precipitation in the last autumn was studied,based on the meteorological data of 1981-2003 in Fuxin City of Liaoning Province.The result showed that the soil moisture content during the critical period of spring sowing in Fuxin was mainly decided by the precipitation in the last autumn.A forecast model was established and validated by forecasting the soil moisture content during of the critical period of spring sowing in 2003-2006.

Key words: Critical period of spring sowing, Critical period of spring sowing, Soil moisture content, Precipitation in autumn