【摘要】 本研究通过在四川烤烟主产区设置田间试验,分析了不同烟区烟叶的外观质量、内在质量以及糖、总氮、烟碱、氯、钾、有机酸以及石油醚提取物等常规化学成分。分析结果显示,烟叶的外观质量以德昌、元坝、盐边点的为好;烟叶感官质量以德昌、盐边点较好;烟叶化学成分方面,所有点的烟叶总糖与还原糖的含量均较高;在总植物碱含量方面,上部烟叶的含量偏高(基本大于2.5%),而中下部叶表现适宜;总氮及氯的含量基本适宜(1.5%～2.5%);钾含量变化较大(1.50%～2.46%);石油醚提取物含量均超过了2.0%;部分烟叶有机酸含量均超过16.0%。在糖碱比方面,大多数烟叶样品的糖碱比在8～12适宜范围内。本研究结果表明,攀枝花与凉山地区是四川省最适宜发展优质烟叶生产的区域。更多还原

【Abstract】 This study was set up in different tobacco-growing areas in Sichuan province to study different ecological conditions on the leaf appearance quality,internal quality,and chemical composition.Leaf appearance quality of tobacco samples from Dechang,Yuanba and Yanbian were better than others,while tobacco samples from Dechang and Yanbian with good sensory quality.Determination of chemical composition of tobacco leaves showed that tobacco samples from all experimental sites were with higher leaf total sugar and reducing sugar content.In the total alkali content,all experimental sites with still relatively high content of upper leaves(basically more than 2.5%),while the lower and middle leaves with appropriate content.In total nitrogen and chlorine content of leaf samples,all were at the appropriate level within the scope of 1.5%-2.5% basically.Potassium content of all samples varied accordingly,with the highest of 2.46% and the lowest concentration of 1.50%.Leaf petroleum content of all samples were more than 2.0%,while organic acid content of most samples were greater than 16.0%.In the respect of sugar to alkali ratio,most samples were in suitable range of 8-12.The results of this study indicate that the most suitable regions for high quality tobacco production are Panzhihua and Liangshan area.更多还原