烤烟烟叶柔软度与物理指标的关系

以江西省2014年150份烤烟样品为材料,应用通径分析以及逐步回归分析方法,研究了烤烟烟叶柔软度与物理特性的关系。结果表明:烤烟叶片厚度、延伸率和拉力对上部叶柔软度的影响较大,直接作用系数分别为0.837、–0.632、0.612;叶片延伸率、叶面密度和含梗率对中部叶柔软度的影响较大,直接作用系数分别为–0.699、0.674、–0.654;叶片单叶质量、填充值和厚度对下部叶柔软度的影响较大,直接作用系数分别为0.837、–0.465、–0.453。烤烟烟叶柔软度与物理性状指标之间存在多元线性回归关系,各部位叶片柔软度与物理性状指标所建立的逐步回归方程均达到极显著水平,且拟合度较好。

Relationship between softness and physical properties in flue-cured tobacco leaves

The relationship between softness and physical properties in flue-cured tobacco of 150 tobacco samples from Jiangxi province in 2014 was studied by path analysis and stepwise regression analysis. The results indicated that leaf thickness, elongation and pull showed big influence on softness of upper leaves of flue cured tobacco, the direct path-coefficients were 0.837,–0.632 and 0.612, respectively. Leaf elongation, density and stem content showed big influence on softness of middle leaves of flue cured tobacco, the direct path-coefficients were –0.699,0.674 and –0.654, respectively. single leaf weight, filling value, and thickness showed big influence on softness of bottom leaves of flue cured tobacco, the direct path-coefficients were 0.837,–0.465 and –0.453, respectively. Multiple linear regression relationship existed between flue-cured tobacco softness and physical properties, and the multiple stepwise regression equations established on softness for different leaf positions of tobacco versus physical properties were of significant level and fitted pretty well.