Abstract: Snow mold was the main diseases of winter wheat in Changji Hui Autonomous Prefecture, Xinjiang Uygur Autonomous Region, they occur every year to varying degrees, and they form an onset cycle with changes in weather conditions. By collecting disease data from 1996 to 2018 and field surveys, the correlation between winter wheat snow mold incidence and 19 meteorological factors such as maximum snow depth in winter, ≥20 cm snow days, ≥30 cm snow days, precipitation in mid-March, average temperature in late-March were analyzed. The strong correlation meteorological factors was screened out, and a meteorological grade forecasting model for winter wheat snow mold rot was established. The application test has a good forecasting effect.

Key words: winter wheat, snow mold, weather grade forecast, Changji