Abstract:

Taking the descriptive statistics, simple correlation and canonical correlation analysis as methods, this paper studied the relationship between major climatic factors and chemical compositions of flue\|cured tobacco in Baoshan. The result indicated that ① climate in Baoshan was suitable for planting high\|quality flue\|cured tobacco. ② the influences of climatic factors on tobacco leaf chemical composition were  in the following order: temperature>precipitation>sunshine; protein contents, ratio of potassium to chlorine, reducing sugar and total N were obviously affected by meteorological parameter, and the weather in July had the greatest impact on chemical compositions. ③ tobacco leaf protein contents showed a significant negative correlation with sunshine hours in September, mean precipitation in July and August, and mean temperature in May, June and July; Reducing sugar was significantly negative correlated with mean precipitation in May, mean monthly temperature, while significant positive correlation with mean precipitation in July. The total N showed a significant negative relationship with mean temperature in May, sunshine hours in September and mean precipitation in July and August. The correlation of potassium ratio to chlorine was significantly positive with mean temperature in August and September, and significantly negative with sunshine hours in July. The influences of temperature and precipitation on tobacco leaf chemical compositions were: reducing sugar > total N > protein, and total N >reducing sugar >protein, respectively.

Key words: flue\, cured tobacco, climatic factors, chemical composition, correlation analysis, Baoshan

摘要：

运用描述统计、简单相关和典型相关统计分析方法，研究了保山烟区主要气象因子与烤烟化学成分含量的关系。结果表明：①保山烟区气候条件适宜，气候特点有利于优质烤烟的种植；②光、温和水气象因子对烟叶化学成分的影响为：气温>降雨量>日照；气象因子对蛋白质、钾氯比、还原糖和总氮影响较大，其中7月的气象因子对化学成分含量影响最大；③烟叶蛋白质与5~7月气温、9月日照时数和7~8月降雨量呈显著负相关；还原糖与5月降雨量和5~9月平均气温呈显著负相关，与7月降雨量呈极显著正相关；总氮与5月气温、9月日照时数和7~8月降雨量呈显著负相关；钾氯比与8~9月气温呈显著正相关，与7月日照时数呈显著负相关；气温、降雨量对烤烟化学成分的影响分别为:还原糖>总氮>蛋白质、总氮>还原糖>蛋白质。

关键词: 烤烟；气象因子；化学成分；相关性；保山