Correlation Analysis of Physical Characteristics and Chemical Composi-tion of Tobacco Leaves Based on Different Maturity
In order to find out the correlation of quality traits of cured tobacco leaves,and to clarify the relationship between physical tra-its and internal quality of tobacco leaves.Different maturity treatments of the middle leaves of Yunyan 87 were set up in Qiandongnan Prefecture,Guizhou Province,and the correlation between the physical characteristics of cured tobacco leaves and the main chemical components and harvest maturity was analyzed.The results showed that the main physical property indexes were significantly correlated with the chemical composition indexes(except the nitrogen base ratio)and the maturity,and the absolute correlation coefficient was 0.713～0.975;further stepwise regression analysis showed that the important indexes affecting the softness value,tension stress,filling value and thickness value were reducing sugar,starch,total nitrogen,reducing sugar,protein,and maturity,respectively.The fitting degree of the stepwise regression equation established was high,exceeding 95％.The physical properties of flue-cured tobacco leaf are affected by the harvest maturity and the chemical composition of the flue-cured tobacco leaf,but the importance of the impact is different for different physi-cal characteristic indexes.The stepwise regression equation established by using its important indexes can provide a reference for the pre-diction of physical properties of flue-cured tobacco leaf.
万方数据
维普
