基于物元可拓模型的四川烟区烤烟中部叶化学品质的评价

Evaluation on Chemical Quality in Middle Leaves of Flue-cured Tobacco in Sichuan Tobacco-growing Areas Based on Matter-element Extension Model

为物元可拓法在烟叶化学品质评价上的应用提供科学依据,选取四川省烟区53个中部烟叶样品为研究对象,通过建立物元可拓模型计算可拓性指数及综合关联度,分析烟叶总糖、还原糖、总氮、烟碱、钾、氯以及淀粉等常规化学成分含量,并对其化学品质进行综合评价。结果表明:在53个烟叶样品中,经物元可拓模型的判定,化学品质质量档次为好、较好、中等和稍差的烟叶样品分别为8个、21个、23个和1个;经主成分分析,化学品质质量档次为好、较好、中等和稍差的烟叶样品分别为8个、15个、27个和3个;2种评价方法结果一致的有45个烟叶样品,一致率达84.9%。物元可拓分析法可用于烟叶化学品质的评价。

The conventional chemical components content of total sugar,reducing sugar,total nitrogen,nicotine,potassium,chlorine and starch in 53 middle tobacco leaf samples from Sichuan tobacco-growing area are analyzed by calculating extension index and comprehensive correlative degree through establishment of matter-element extension model,and then chemical quality of middle tobacco leaves is evaluated comprehensively to provide the scientific basis for application of matter-element extension method for evaluation of chemical quality in tobacco leaves.Result:The matter-element extension model shows that good,preferably good,medium and poor chemical quality of 53 tobacco leaf samples are respectively 8,21,23 and 1.The principal component analysis shows that good,preferably good,medium and poor chemical quality of 53 tobacco samples are respectively 8,15,27 and 3.The results of the two evaluation methods are consistent with each other on 45 tobacco leaf samples,and the consistency rate reaches 84.9%.In conclusion,the matter-element extension method can be used for evaluation of chemical quality in tobacco leaves.