我国不同生态区云烟97烟叶主要品质性状差异分析

为掌握云烟97在我国不同生态区烟叶的主要品质性状差异，系统分析了云南曲靖（清香型烟区）、贵州毕节（中偏清香型烟区）和重庆武隆（中间香型烟区）3个烤烟种植生态区云烟97烟叶的外观质量、化学成分、风格特征和烟气品质。结果表明，贵州毕节烟叶烟气品质综合得分最高，中部叶干草香香韵、香气质、香气量和透发性得分显著高于云南和重庆，还原糖含量和烟气浓度显著高于重庆；云南曲靖烟叶外观质量最好，中部叶总氮含量、氮碱比值以及烟气飘逸感得分均显著高于贵州和重庆，烟气浓度和劲头得分居中，清香型特点显著；重庆武隆烟叶外观质量居中，中部叶总植物碱含量、烟气刺激性、干燥感和悬浮感得分均显著高于云南和贵州，而糖碱比和余味得分则显著低于云南和贵州，中间香型特点显著。由云南经贵州向重庆方向，云烟97烟叶清甜香韵和烟气飘逸感逐渐减弱，木香香韵和烟气悬浮感逐渐加强。

Analysis on the Main Quality Characteristics of Flue-cured Tobacco Variety Yunyan97 in Different Ecological Regions of China

In order to understand the main quality characteristics of flue-cured tobacco variety Yunyan97 in different ecological regions of China, we systematically analyzed and compared the differences on yield and quality of flue-cured tobacco Yunyan97 in three typical ecological regions, including Qujing, Yunnan (delicate-fragrance tobacco area), Bijie, Guizhou (mid-delicate-fragrance tobacco area), and Wulong, Chongqing (mid-fragrance tobacco area). The results indicated that the comprehensive score of the quality in Bijie, Guizhou was the highest. The scores of hay fragrance, aroma temperament, aroma volume, and permeability in the middle leaves in Guizhou were significantly higher than those of Yunnan and Chongqing. Moreover, the contents of reducing sugar and fume concentration in Guizhou were significantly higher than those of Chongqing; The appearance quality in Qujing,Yunnan was the best, with total scores in nitrogen content, nitrogen-base ratio, and the fume's fluttering sense in the central leaves were significantly higher than those of Guizhou and Chongqing. Moreover, the scores in fume concentration and momentum were in the middle and delicate-fragrance characteristic was remarkable in Yunnan; The appearance quality in Wulong, Chongqing was in the middle, with the scores of total plant alkali content, smoke irritancy, dryness, and suspension sensation in central leaves were significantly higher than those in Yunnan and Guizhou. However, the scores in sugar-alkali ratio and aftertaste in Chongqing were significantly lower than those in Yunnan and Guizhou, and the mid-fragrance characteristic was remarkable. From Yunnan to Guizhou through the direction of Chongqing, the sweetness and fragrance, and the fume's fluttering sense of the flue-cured tobacco variety Yunyan97 weakened gradually, and its woody fragrance as well as fume suspension feeling increased gradually.