Abstract: Based on calculat ing climate productivity,the food out putper unitarea is separated into economic and technologicaly ield and meteorological yield in this paper.The models for predicting them are est ablished by using factors such as amounts of applied fert ilizer.percentage of single harvest rice planting area and mean temperature from January to March.Because of its long effective period,high accuracy and simplicity to dalculate,this method has a wide using prospect in operational service.