Abstract: The relationship between temperature data and winter wheat growth data in last 35 years in East Gansu Province was analyzed. The results showed that climate warming made winter wheat mature early, because it speeded up both vegetative growth stage of winter wheat in early spring and reproductive growth stage in early summer. For predicting optimum date of local winter wheat harvest and providing direction to winter wheat production, the harvest prediction model was established, according to the filling speed and observed climatic data from May to June in last 11 years from Xifeng agro-meteorological experiment station. The predicted result accorded with ripe stage of local winter wheat in reality.

Key words: Climate warming, Climate warming, East Gansu Province, Winter wheat, Ripe stage