四川烟区烤烟主要化学成分的变异分析

The variation analysis of the main chemical components of flue-cured tobacco leaves in Sichuan province

对2003—2005年四川省主产烟区烤烟主要化学成分含量进行了变异分析，并与津巴布韦优质烟叶化学成分含量进行了差异比较。结果表明：①四川烤烟总糖、还原糖含量及糖碱比值总体较高，烟叶氯含量较低且变异性较大，钾氯比值较大但表现欠稳定。②四川烤烟不同部位间除氯含量差异不显著外，其余各指标差异均达到显著水平；不同地点间化学成分差异极显著；不同品种间总糖、还原糖、钾、氯及钾氯比差异显著；年际间氯含量、氮碱比、钾氯比表现较不稳定。③四川烤烟与津巴布韦烤烟化学成分间存在显著差异，烟叶总糖、还原糖含量及糖碱比值显著高于进口烟叶，钾、氯含量则显著低于进口烟叶。

The variation of the main chemical components of flue-curet tobacco leaves from Sichuan tobacco-growing areas during 2003 to 2005 was analyzed,and the comparison between Sichuan and high quality tobacco-growing areas in Zimbabwe was conducted. The results showed that： （i） Contents of total sugar,reducing sugar and the ratio of reducing sugar to nicotine were high in total ;the content of chlorine was low and had a big variation; the ratio of potassium to chlorine was high but unstable. （ii） The difference of chemical components of fluecured tobacco leaves among stalk positions was significant at 5 % level except chlorine content;the difference of chemical components among areas was significant at 1% level;the difference of contents of total sugar,reducing sugar,potassium,chlorine and the ratio of potassium to chlorine among cultivam was significant at 5 % level;the difference of chlorine content,the ratio of total nitrogen to nicotine and the ratio of potassium to chlorine among years was unstable. （iii） The difference of chemical components of flue-cured tobacco leaves between Sichuan and Zimbabwe was significant;Sichuan was higher significantly than Zimbabwe in contents of total sugar,reducing sugar and the ratio of reducing sugar to nicotine, but lower significantly than Zimbabwe in contents of potassium and chlorine in flue-cured tobacco leaves.