Abstract: Based on the studied results,the model parameters of the World Food Study Model(WOFOST) were divided into different fitting parts for the four main crops and the yields of the four main crops were simulated and analyzed in Heilongjiang Province,by the synthesis regression equations with the predicted yields by WOFOST model and the trend yields.The results showed that the synthesis methods were better,available and worthy of theoretical study for reality applications.The application restricts of a set of united parameters were overcome.The application fields were developed under the sophisticated climate conditions for the WOFOST model.The shortcomings and the prospect were pointed out in this paper.

Key words: World Food Study Model(WOFOST), World Food Study Model(WOFOST), Heilongjiang Province, Four main crops, Yield