湖北省主产烟区烟叶化学成分含量特征分析

The characteristics of chemical components in tobacco leaves from Hubei's main production areas

利用统计方法分析了湖北省主产烟区烟叶化学成分含量的特征,结果表明:(1)湖北省2008年生产的烟叶平均烟碱含量为2.80%,略微偏高,总糖、总氮、钾含量较适宜;氯含量偏低,化学成分协调性较好;(2)除氯含量外其余所有指标在部位间的差异均达到极显著水平,产区间烟碱含量差异达到显著水平,总糖、总氮和钾含量差异达极显著水平;(3)综合评价结果显示烟叶化学成分总体质量处在中(50.5%)、上(48.5%)等水平,化学成分可用性平均指数为78.6,变异系数0.09,全省烟叶化学成分质量水平较为一致;(4)与国际型优质烟叶比较,湖北省烟叶化学成分含量符合标准最高的为总氮(88.7%),其次为烟碱含量(69.1%),其余指标值均未超过60%,说明湖北省烟叶化学成分质量与国际型优质烟叶比还存在一定的差距。

Quality parameters of leaf tobacco chemical components in Hubei province were analyzed. Results showed that：（1） the average nicotine contents was 2.80%,slightly higher than desired level. Total sugar,nitrogen and potassium were at proper level,and chlorine content was low. （2） Analysis of variance revealed that all parameters except chlorine showed significant difference leaf tobacco from different positions. Nicotine content showed significant difference （0.05）,while the difference between production areas for total sugar,nitrogen,potassium content were highly significant （0.01）. （3） Chemical Components Usability Index （CCUI） was about 50.5% at the middle level,and 48.5% at the high level with an average of 78.6,and the coefficient of variation was 0.09. These indicated that chemical components was at the right level. （4） Compared with high quality foreign leaf tobacco,the highest similarity （88.7%） existed in total nitrogen ,nicotine was 69.1%,and others were less than 60.0%,which suggested that tobacco leaves from Hubei province were not as good as those imported in terms of chemical components.