山东省不同类型烟叶质量特征差异及原因分析OA

In order to clarify the differences in the quality characteristics of different types of tobacco in Shandong Province and the reasons,this study collected tobacco samples from Shandong tobacco areas for three consecutive years.The physical characteristics,chemical composition and sensory assessment quality of different types of tobacco leaves were analyzed,and the main factors affecting the assessment quality were analyzed through correlation analysis.The results showed that the physical characteristics of the middle and upper leaves of the flavor type were the best,followed by the aroma type and eating type.It was represented that some of the middle and upper leaves of the eating type was too vigorous in development,and the leaf size,leaf weight and leaf density were beyond the appropriate range.In terms of chemical composition,the chemical composition of middle leaves of the flavor type had the best coordination,followed by middle leaves of the flavor type,and middle leaves of the flavor type had the lowest coordination,which was mainly due to the high content of starch and chlorine ions and the low potassium-chlorine ratio in part of the flavor type tobacco leaves;the coordination of the chemical composition of the upper leaves of the three tobacco types was basically the same.In terms of sensory assessment quality,the quality of the middle leaves of the aroma type scored the highest,followed by the flavor type and eating type.The difference was mainly reflected in the aroma,aftertaste,miscellaneous gas,irritation and other indicators.The difference in assessment quality of upper leaves of three tobacco types was not obvious.The correlation analysis showed that leaf width had a significant negative effect on assessment quality of the middle leaves,leaf length and leaf thickness had significant negative effects on the assessment quality of the upper leaves;potassium and potassium-chlorine ratio had significant positive effects on assessment quality of the middle leaves,while reducing sugar,sulfur,chlorine ions,cellulose,hemicellulose had significant negative effects;reducing sugar,total sugar had significant positive effects on assessment quality of the upper leaves,while nicotine and cellulose had negative effects.The middle leaves of eating type had lower assessment quality,in connection with too strong leaf development,higher sulfur and chlorine ion contents;there was no significantly difference in assessment quality of upper leaves of three tobacco types,but the reasons for this were different.The upper leaves of aroma type and flavor type had high potassium content and low chlorine ion content,but sugar content was low,alkali content was high,coordination of sugar-alkali ratio became worse.The upper leaves of eating type had low potassium content,high chlorine ion content,high sugar content and low alkali content,sugar-alkali ratio was coordinated.Therefore,it is necessary to take appropriate agronomic measures to improve the quality of tobacco according to the problems of different types of tobacco.