Fit. Cherry is a deciduous fruit tree, which likes warm but not cold. Adapted to warm and humid climate, weak cold resistance. The average annual temperature suitable for growth is between 15- 16℃. The annual average temperature in Nanchong, Sichuan is about 17. 1℃, and the annual variation range of monthly average temperature is about 4℃, which is suitable for cherry growth. Cherry, especially a large and thick-skinned cherry produced in America, Canada, Chile and other American countries, belongs to European cherry. Cherry fruit trees have been introduced in Shandong, Liaoning, Henan, Hubei, Sichuan and Shanxi, forming a variety of China cherries, which has a considerable production scale, and its taste and quality are comparable to those of foreign countries.