云南不同烤烟品种叶片物理特性的差异分析

选择云南4个烤烟品种3个部位叶片作为研究对象,测定其12个物理指标,统计分析不同烤烟品种间的差异。结果发现,4个烤烟品种3个部位的烟叶在多数物理指标上存在显著差异。上部叶以云烟85拉力最大,为3.236 7N,中、下部叶以K326拉力最大,分别为3.303 3N、2.616 7N;上、中部叶K326耐破度最大,分别为82.666 7kPa、116.666 7kPa,云烟85次之;下部叶以云烟87耐破度最大,为110.666 7kPa,云烟85次之,说明K326、云烟85烟叶的弹性较好。上、中部烟叶以云烟87填充值最大,分别为3.463 4cm3/g、3.564 0cm3/g,下部烟叶以云烟85填充值最大,为3.430 9cm3/g,K326次之,说明云烟87填充性较强。综合来看,上部烟叶以红大、云烟85的物理特性较好,中、下部烟叶以云烟85、K326的物理特性较好。

Difference Analysis of Physical Characteristics of Tobacco Leaves from Different Varieties in Yunnan

In this paper,three stalk positions of four varieties of flue-cured tobacco in Yunnan province were selected as research objects.Through the determination of 12 physical indicators,the results showed that most of the physical indicators had a significant difference among the 4 varieties of flue-cured tobacco.Tension of Yunyan85 variety was the largest in upper leaves and it was 3.236 7 N.Tension of K326 variety was the largest in middle and lower leaves and they were 3.303 3 N,2.616 7 N,respectively.Additionally,bursting strength of K326 variety was the highest in upper and middle leaves and they were 82.666 7 kPa,116.666 7 kPa.Yunyan85 was stronger.Bursting strength of Yunyan87 variety was the highest in lower leaves and it was 110.666 7 kPa,followed by Yunyan85.It showed that the flexibility of K326 and Yunyan85 variety was better.Furthermore,filling value of Yunyan87 variety was the most in upper and middle leaves and they were 3.463 4 cm3/g,3.564 0 cm3/g.Filling value of Yunyan85 variety was the most in lower leaves and it was 3.430 9 cm3/g.K326 was higher.It showed that filling property of Yunyan87 variety was stronger.In general,the physical characteristics of Hongda and Yunyan85 were better in upper leaves,and those of Yunyan85 and K326 were better in middle and lower leaves.These studies provide a reference for cultivation of tobacco in Yunnan,quality evaluation of physical characteristic of tobacco,and the choice of cigarette materials.