【摘要】 采用主成分分析法,从28个影响再生稻生长发育指标中选出≥10℃年积温、9月平均温度、年降雨量、8～10月日照时数等4个主要成分作为区划分区指标。用聚类分析法,将云南省再生稻生产区域分为3个气候生态区。即滇西南高温多雨多日区,滇南低纬温暖区和滇中、滇北、滇东北高温少雨、温凉寡照区。更多还原

【Abstract】 By principal component analysis of 28 meterological indexes affecting the growth and development of ratoon rice, four were selected as the division indexes. Based on the results of shortest - distance cluster analysis, the ratoon rice production areas of Yunnan were divided into three climatic ecological divisions; Viz. southwest Yunnan division with high temperature, plentiful rainfall and plentiful sunshine; south Yunnan division at lower latitude and with a warm season; and central, north and northeast Yunnan division with high temperature and inadequate rainfall or with cool temperature and inadequate sunshine.更多还原