The Natural Climate Characteristics and Ecological Regionalization in Yunnan Sugarcane Area

The natural climate characteristics were analyzed in Yunnan sugarcane area.On the fundamental of crop ecological regionalization with the temperature as the primary guideline and rainfall per year,dryness and agricultural significance as the secondary guideline,the six ecological zones were compartmentalized in the Yunnan sugarcane area.i.e.the north tropic humid zone,the north tropic hemi humid zone,the south subtropical humid zone,the south subtropical hemi humid zone,the central subtropical humid zone,and the central subtropical hemi humid zone.This regionalization will provide a scientific basis for developing the Yunnan sugarcane industry.