Division method and technology of agricultural climate of suitable region for planting southern subtropical fruit trees in Fujian Province of China

According to the climate data of Fujian Province, by using of mathematical statistics to establish geographical projection model between the minimum temperature and longitude, latitude, altitude (including litchi and longan that happened once in 20 years of minimum temperature, the reference of once in 10 years, banana happened once in 5 years of minimum temperature), the chilling (freezing) injury rating index of litchi, longan, banana trees was determined. Agricultural climate division map of suitable planting for fruit trees of southern subtropical zone was made using the tool of GIS. The results showed: The regional distribution of chilling (freezing) injury area of five grading (no, slight, middle, heavy, severe) including litchi, longan, and banana were in a trend of gradual change from the southeast coast to the northwest.