期刊论文

中文

烟草科技

1002-0861

2008

12

5-9,13

10.3969/j.issn.1002-0861.2008.12.001

本校为第一机构

为对烤烟化学品质进行综合评价，应用DPS数据处理系统软件，对53个烤烟样本的13项化学指标进行主成分分析，按累积贡献率90％提取6个主成分，求得烤烟样本的6个主成分得分及综合得分，并对综合得分以欧氏距离为衡量烟叶样本间差异大小的指标，采用重心法进行系统聚类，再按距离系数0．3截取，将53个烟叶样本分为5类。结果表明：第1类综合化学品质最好，其综合得分≥1．34；第2类综合化学品质较好，其综合得分为O．50～0．93；第3类综合化学品质中等，其综合得分为0．00～0．44；第4类综合化学品质稍差，其综合得分为0．20～-0．79；第5类综合化学品质差，其综合得分≤-0．91。

In order to evaluate the chemical quality of flue-cured tobacco comprehensively, the contents of 13 chemical components in 53 flue-cured tobacco samples were analyzed by principal component analysis with DPS （data processing system） software. Six principal components with accumulative contribution rate over 90% were obtained, also obtained were the scores of the six principal components and comprehensive scores of the tobacco samples. The Euclidian distance between the comprehensive scores was taken as a measurement of tobacco samples＇ diffe...