The basic climate characteristics of Dezhou are the significant influence of monsoon, four distinct seasons, clear boundaries between cold and hot, dry and wet, dry and windy in spring, hot and rainy in summer, cooler and more sunny in autumn, cold and less snow and more dry in winter, with significant continental climate characteristics . Long sunshine hours and high light intensity are concentrated in the early and middle stages of crop growth and development, which is conducive to the progress of crop photosynthesis; the annual average sunshine hours are 2592 hours, the sunshine rate is 60%, and the total solar radiation is 124.8 kcal /Square centimeter. In terms of time distribution, it is especially highest in May and June, with 280 hours of moonlight, 9 hours per day, and light radiation up to 15 kcal/cm². The annual average temperature in Dezhou is 12.9℃. The extreme maximum temperature was 43.4℃ (July 23, 1955, Decheng District), and the extreme lowest temperature was -27℃ (January 15, 1958, Decheng District). The average frost-free period in Dezhou is as long as 208 days, generally from March 29 to October 24.