Construction of comprehensive evaluation model of tobacco leaves for cigar wrapper in Hengyang tobacco area and evaluation of cultivated varieties
By constructing a multi-index comprehensive evaluation model of tobacco leaves for cigar wrapper,this study aims to provide a scientific basis for the comprehensive evaluation and variety selection of tobacco leaves for cigar wrapper in Hengyang tobacco area.Taking CX80,CX81,CX26,Cuba No.2 and Cuba No.7 as the test varieties,the agronomic traits,appearance quality,physical characteristics and sensory quality of tobacco leaves for cigar wrapper were compared and analyzed,and the principal component analysis was used to comprehensively evaluate the tobacco leaves for cigar wrapper.Principal component analysis was performed on 34 tobacco leaf quality indicators,and 4 principal components were extracted.The cumulative variance contribution rate reached 90.25％.The comprehensive evaluation model was es-tablished by principal component analysis as Y=0.480Y1+0.296Y2+0.143Y3+0.081Y4,and the principal component score and comprehensive score were calculated.The visualization degree of the multi-index comprehensive evaluation mod-el constructed by principal component analysis combined with three-dimensional score map was high,which could better evaluate the comprehensive quality of tobacco leaves in Hengyang tobacco area.According to the above model,the comprehensive evaluation of each cultivated variety was carried out.It was found that the comprehensive score of CX81 variety was the highest,which was manifested in the wide leaves,thin body,good integrity and oil content,strong pulling force,uniform color,fine and flat branches,loose tissue structure,which met the standard of high quality tobacco leaves for cigar wrapper.
tobaccocigar wrapperprincipal component analysiscomprehensive evaluation model
国家科技期刊平台
NSTL
万方数据
