Study on Relationship between Softness and Physical Characteristics of Flue-cured Tobacco and the Suitable Softness Range in Jiangxi Province
To understand better the overall situation of flue-cured tobacco softness in Jiangxi Province,and its relation with physical characteristics,and suitable range of tobacco leaf softness,this paper collected 476 flue-cured tobacco samples from 18 major tobacco planting counties of Jiangxi Province in 2014,and analyzed the relation between tobacco leaf softness and physical characteristics.The results showed that the softness range of flue-cured tobacco was 11.70～ 79.90 mN in Jiangxi Province.There were significance differences in softness between different parts of fluecured tobacco leaf.The softness of lower part leaves existed bigger differences in different counties,and that of middle and upper parts leaves maintained a consistent level.Physical characteristics were significantly different in each softness range.The regression equations of each physical index,total physical characteristic scores and softness were all reached significant levels.The regression coefficient of determination was 0.839～0.961 with good fitting degree.The softness of tobacco leaf could in certain degree represent the good physical processing quality.The physical processing characteristics were the best when the leaf softness range was 20～60 mN,showing the superior tobacco leaf processing performance:lower stem ratio,good availability,suitable leaf blade density and tension,equilibrium moisture content.The secondery good leaf softness range was between 60～ 70 mN,where the physical processing characteristics were better.
Jiangxi provinceflue-cured tobaccosoftnessphysical characteristicsrelation analysissuitable range
国家科技期刊平台
NSTL
万方数据
维普
