毕节雨养烟区气候状况与分析

以毕节雨养烟区主产县纳雍县、赫章县和威宁县的1980~2010年的气候因素为基础,分析了该区气候因素,运用模糊数学隶属度函数模型对该区的气候适生性进行了综合评价,并估算了气候适生性指数(CFI)。结果表明:毕节雨养烟区大田期的平均气温较适宜、日照时数多、≥10℃积温高、降雨量充沛,这些气候因素有利于优质烟叶的形成;除伸根期气温偏低和中后期降雨量偏高外,其它气候因素及其它时期的降雨量均与国外优质烟区基本相当;纳雍县、赫章县和威宁县的气候适生性指数平均分别为0.793、0.860和0.656。

Analysis of Climate Condition in Bijie Rain-fed Tobacco Areas

Based on the climate factors of main rain -fed tobacco areas （ Nayong, Hezhang and Weining ） in Bijie city from 1980 to 2010, we analyzed the climate factors in these areas , comprehensively evaluated the climate feasibility of these areas by ap-plying subordinating degree function model in fuzzy mathematics , and estimated their climate feasibility index （ CFI ） .The results indicated that the rain -fed tobacco areas in Bijie had a proper average air temperature , much sunshine duration , high accumulated temperature of ≥10 ℃, and abundant rainfall in the field growth period of flue -cured tobacco .These climate factors were quite propitious to the formation of high -quality tobacco leaves .Except that the air temperature at root -extending stage of tobacco was relatively low and the rainfall in the middle and later growth periods was relatively high , other climate factors and the rainfall in other growth periods in Bijie rain -fed tobacco areas were basically the same as those in foreign high -quality tobacco areas .The average CFI of Nayong county, Hezhang county and Weining county was 0.793, 0.860 and 0.656 respectively.