烤烟中微量营养元素含量与物理特性的关系探讨

通过分析我国2010—2014年C3F等级的初烤烟叶中6种中微量营养元素(Mn,Fe,Cu,Zn,Ca和Mg)含量与烟叶厚度、叶面密度、平衡含水率、拉力、填充值和含梗率6项物理特性指标以及物理特性总分间相关性,得到如下主要结论:(1)烟叶厚度和叶面密度与Mn和Zn含量呈极显著负相关关系,与Ca和Mg含量呈极显著正相关关系。(2)Zn和Mg对烟叶的物理特性指标影响最大,其中Zn主要影响烟叶厚度、叶面密度、拉力等指标;Mg主要影响烟叶厚度、叶面密度等指标。(3)Ca含量越高,烟叶越厚,但填充性能越差,过高的Ca含量会降低烟叶的吸湿性能。

Correlation Between Physical Characteristic Indexes and Contents of Medium and Micro Nutrition Elements in Flue-cured Tobacco Leaves

The correlation between contents of Mn, Fe, Cu, Zn, Ca, Mg and the physical characteristic indexes of thickness, density, equilibrium moisture content, tension, filling value, stem ratio and total point of the flue-cured tobacco leaves were studied, the results showed that: 1) The thickness and density indexes of leaves have significant negative with the contents of Mn and Zn, but have positive correlations with those of Ca and Mg. 2) The effects of Zn and Mg contents on the physical properties of leaves are the most obvious, in which Zn content mainly influenced the thickness, density and tensile indexes of leaves, while Mg content influenced the thickness and density indexes of leaves. 3) High Ca content can increase leaf thickness and weaken filling value, however, over-high Ca content will reduce the moisture retention of leaves.