应用近红外光谱分析云南主要烟叶生产基地之间的烟叶特性

Tobacco Quality Analysis of Producing Areas of Yunnan Tobacco Using Near-Infrared(NIR) Spectrum

以2010年红塔集团在云南4个烟叶生产基地内收集的中部上等烟叶样品为试验对象,其中玉溪、楚雄、昭通的烤烟品种为K326,大理的烤烟品种为红大,共计烟叶近红外光谱1 276条;应用光谱特征投影及相关分析等方法对不同烤烟生产基地之间烟叶近红外光谱的分析结果表明:将样品随机按2:1划分为分析集与验证集后,其分析集与验证集的一维、二维投影均值的相关系数都达到0.99以上,具有较好的一致性;同时,应用一种相似度计算方法得到了不同基地的烟叶样品光谱之间的相似度值,该相似度值可为烟叶的种植规划、质量管理以及烟草工业企业的原料收购和烟叶配方等提供参考。

In the present study,tobacco quality analysis of different producing areas was carried out applying spectrum projection and correlation methods.The group of industrial classification data was near-infrared（NIR） spectrum in 2010 year of middle parts of tobacco plant from Hongta Tobacco（Group） Co.,Ltd.Twelve hundred seventy six superior tobacco leaf samples were collected from four producing areas,in which three areas from Yuxi,Chuxiong and Zhaotong,in Yunnan province all belong to tobacco varieties of K326 and one area from Dali belongs to tobacco varieties of Hongda.The conclusion showed that when the samples were divided into two parts by the ratio of 2∶1 randomly as analysis and verification sets,the verification set corresponded with the analysis set applying spectrum projection because their correlation coefficients by the first and second dimensional projection were all above 0.99.At the same time,The study discussed a method to get the quantitative similarity values of different producing areas samples.The similarity values were instructive in tobacco plant planning,quality management,acquisition of raw materials of tobacco and tobacco leaf blending.