重庆烟区烤烟质量特点研究

[目的]科学地评价分析重庆烟区烟叶质量，进一步优化该产区的烟叶质量。[方法]通过对重庆烟区149份烤后烟的外观质量、物理指标、化学成分、感官质量的评价，系统地了解其质量风格特点。[结果]试验表明，重庆烟区烟叶以“成熟-”为主，颜色“橘黄”为主，身份“稍薄”、“中等”，结构“疏松”，油分“稍有、有”。烟叶各物理指标中以叶面密度、填充值、叶宽等指标差异度较大，而叶长、含梗率、平衡水分差异度较小。烟碱含量、糖碱比、氮碱比适宜，烟叶钾含量、两糖比值较高，氯含量较低。中部叶劲头中等，浓度以“中等”、“较浓”为主，香气质以“较好”为主，香气量“较足”，余味以“较舒适”、“舒适”为主，杂气为“有”、“较轻”，刺激性为“有”、“微有”；且中部叶烤烟感官质量档次主要分布在“较好—好—中等”范围内，“较差、差”的等级所占比例极小。[结论]研究可为重庆烟叶产区烤烟的栽培措施调整、烟叶采购加工、复烤配方使用提供相应参考依据。

Research of Flue-cured Tobacco Characteristics in Chongqing Tobacco Planting Area

[ Objective] To scientifically evaluate the quality of tobacco leaf in Chongqing tobacco planting area, and to further optimize the quality of tobacco leaf in this area. [ Method] We evaluated the appearance quality, physical index, chemical component and sensory quality of 149 tobacco leaves in Chongqing tobacco planting area, in order to understand its unique quality style. [ Result ] Tobacco leaves in Chongqing tobacco planting area were mainly "mature-" and "orange"; tobacco leaf identity was "thinner" and "medium"; tobacco leaf structure was "loose";and leaf oil was “slightly having, having”. There were relatively great differences in leaf density, filling value, leaf width and other physical indexes;but leaf length, stem ratio, equilibrium moisture difference had relatively small differences. Nicotine con-tent, sugar-nicotine ratio and nitrogen-nicotine ratio were relatively proper;but potassium content of tobacco leaves and total glucose-reducing sugar ratio were relatively high;and chlorine content was relatively low. Middle leaves had medium strength, with mainly "medium" and "strong" concentration,"good" aroma quality,“relatively abundant” aroma amount, "comfortable" aftertaste, "having" or "having slight"offensive odor, and“having” or“having slight” irritation. Besides, sensory quality of the middle of flue-cured tobacco was mainly distributed in the range of"relatively good-good-medium". “Relatively poor” and“poor” grade accounted for extremely slight percentage. [ Conclu-sion] This research provides corresponding references for the cultivation measures adjustment, tobacco leaf purchasing and processing, and re-drying formula utilization in Chongqing tobacco producing area.