The Applicability Research of WOFOST Model in North China Plain Status and perspective of crop yield gap Impact simulation of drought disaster at different developmentalstages on winter wheat grain-filling and yield Evaluation technology on drought disaster to yields of winter wheat based on WOFOST crop growth model Crop growth simulation model and its application Impact evaluation of low temperature to yields of maize in Northeast China based on crop growth model Chilling Disaster Factors in Maize Reproductive Stage Based on Crop Growth Model