摘要
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0.50～0.93;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＇ difference, the system was clustered by barycenter method and the 53 samples were divided into 5 ranks： rank 1 was of the best chemical quality with comprehensive scores ≥ 1.34, the comprehensive score ranges of the second to fifth ranks were 0. 50 to 0. 93, 0 to 0. 44, - 0. 79 to 0. 20, and ≤ -0.91 , respectively.
出处
《烟草科技》
EI
CAS
北大核心
2008年第12期5-9,13,共6页
Tobacco Science & Technology
关键词
烤烟
化学成分
品质
综合评价
主成分分析
聚类分析
Flue-cured tobacco
Chemical component
Quality
Comprehensive evaluation
Principalcomponent analysis
Cluster analysis
作者简介
李国栋（1969-），本科，工程师，主要从事烟草工艺和卷烟产品设计研究。
通讯作者：胡建军E—mail：huhjj@2911．net
