Abstract: Based on field experimental data from 2002 to 2005 and soil moisture data on farmland from 1990 to 2005,the drought level index and soil moisture index for winter wheat and summer maize in Huaibei Areas of Anhui Province were built.The mid-term precipitation forecast model was built based on the typical meteorological data.The three-month drought prediction model was built based on the soil and water equilibrium equation.The monthly soil moisture regression model was built based on the temperature and precipitation data.The drought forecast model in Huaibei Areas was built by the integrating the above mentioned three models.According to the results of forecasted drought and rainfall,the suitable soil moisture index for corps,the necessary precipitation index for corps and the precipitation forecast,the drought precaution system for winter wheat and summer maize and the irrigation decision-making computer service systems were built.The results applied in the last two years in the service systems indicated that this system could be well used in the service systems.

Key words: Huaibei Area, Huaibei Area, Drought, Forecast model, Irrigation decision-making