判别分析在烤烟品质鉴定中的应用  

Application of Discriminant Analysis in Distinguishing Flue-cured tobacco Quality

作　　者：毕淑峰[1] 朱显灵[2] 马成泽[3] 

机构地区：[1]安徽黄山学院,安徽黄山245021 [2]中国科学技术大学 [3]安徽农业大学

出　　处：《中国农学通报》2005年第1期79-80,共2页Chinese Agricultural Science Bulletin

基　　金：云南省烟草公司"云南烟草核心香气成分研究"项目资助(97-01-002)。

摘　　要：判别分析是多元统计分析中判断个体所属类型的一种重要方法。以烤烟的总糖、还原糖、总氮、烟碱含量为指标,用距离判别法对不同品质的烤烟进行判别分析,建立判别函数。将原始数据用交互验证法对判别函数进行回判,准确率达91.43％;用新样品对判别函数进行检验,准确率达100.00％,检验结果令人满意。因此,所用的判别分析方法可行,建立的判别函数有效。Discriminant analysis is an important method in multivariate statistic analysis to distinguish what type an individual should belong to. Based on the content of total sugar, reduced sugar, total nitrogen and alkaloid, the discriminant analysis was used in the recognition of different qualitative flue-cured tobacco. At last, the discriminant function was developed. The rate of accuracy, of returned classification using methods of mutual test, reached to 91.43%. The rate of accuracy, of returned classification using new samples, reached 100.00%. The results showed the method of discriminant analysis was useful and the discriminant function was valid.

关 键 词：烤烟品质 烟碱含量 判别分析 还原糖 鉴定 总糖 判别函数 检验结果 准确率 原始数据 

分 类 号：S572[农业科学—烟草工业] S154.3[农业科学—作物学]