Abstract: Accurate forecast of wheat harvest period is the premise to obtain uttermost crop yields.The phonological sequentiality and synchronization could be applied to forecast the growing season of crops.Based the observed phenological data during 1980-2003 in Shijiazhuang,the indexes and model to forecast wheat harvest period were established.The forecast results could be applied to provide the reference for actual wheat harvest period.

Key words: Phenological data, Phenological data, Wheat harvest period, Forecast