关键词: 西南, 单季稻, 立体生态, 亚区划分

Abstract:

The meteorological data from 69 meteorological stations in rice-growing areas of three provinces and one city in southwest China over last 10 years were analyzed in this article, that combined with characteristics of rice growing period. The result showed that, the stereo-ecological region of rice-growing areas in southwest China could divide into four ecological regions（tropical rice area, warm rice area, cool rice area and cold rice area）. The four area could subdivided into five ecological sub-regions（dry-heat indica sub-region, dampness-heat indica sub-region, warm indica and japonica staggered sub-region, warm-cool indica and japonica staggered sub-region, cold and plateau sub-region of japonica）. Making the appropriate cultivation measures and scheme according to this division to guide rice growing in this area is of great significance.

Key words: Southwest China, single cropping rice, stereo-ecological, sub-region division