烤烟糖质量分数与气象因子的相关性评价——以昭通烟区为例

为探索昭通烟区烟叶糖质量分数与其气象因子的关系,研究了2011-2015年昭通烟区3个主要基地(昭阳、彝良、镇雄)烤烟K326各部位初烤烟叶糖质量分数(总糖、还原糖、两糖差)与气象因子的相关性.结果表明:昭通烟区各部位初烤烟叶的总糖质量分数与大田期5-8月日照时数、降雨量、温度的相关性因基地不同而异;各部位初烤烟叶还原糖质量分数与大田期5-8月日照时数负相关、与降雨量正相关、与气温的相关性因基地不同而异;各部位初烤烟叶两糖差与大田期5-8月日照时数正相关、与降雨量负相关、与温度的相关性因基地不同而异.因此,影响昭通烟区各部位初烤烟叶两糖协调性的主导生态因素为大田期5-8月的日照时数和降雨量.

On Correlation Analysis between Sugar Content of Flue-Cured Tobacco and Meteorological Factors: A Case Study of Zhaotong Tobacco-growing Areas

To find out the relationship between sugar content of flue-cured tobacco and meteorological factors in Zhaotong tobacco-growing areas, the correlation analysis of sugar content(total sugar, reducing sugar, TS-RS)of K326 tobacco and meteorological factors in each stalk position in three tobacco planting regions of three main bases(Zhaoyang District, Yiliang and Zhenxiong County) within 2011-2015 were studied. The results show that the total sugar content of junior tobacco leaves in Zhaotong tobacco area was correlated with sunshine hours, rainfall and temperature from May to August in field period. Reducing sugar content of junior tobacco leaves was negatively correlated with sunshine hours, positively correlated with rainfall, and correlated with temperature varied depending on base from May to August. Moreover, the difference between the content of total sugar and reducing sugar of junior tobacco leaves was positively correlated with sunshine hours from May to August in field period, negatively correlated with rainfall and temperature dependence varied depending on base. Therefore, the dominant ecological factors affecting coordination of total sugar and reducing sugar among junior tobacco leaves in Zhaotong area were sunshine hours and rainfall during May to August in the field period.