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对恩施烟区2008和2009年烤烟中部烟叶主要化学成分进行了分析,发现烤烟质量适宜范围指标年度间整体上相差不大,建议质量指标平均范围为:还原糖27.20%～30.54%,总糖32.03%～36.30%,总植物碱2.20%～2.76%,总氮1.66%～1.99%,两糖差3.73%～6.88%,还原糖碱比10.29～13.35,总糖碱比12.12～15.88,两糖比0.81～0.89,总糖氮比16.46～21.48,还原糖氮比14.09～17.93;与贵州、山东和云南省中部烟叶相比,恩施烟区中部烟叶化学成分及比值处于中等水平,且还原糖、总糖、总植物碱含量及两糖差、还原糖碱比和两糖比均接近于云南省烟叶。整体上,恩施烟区烤烟中部烟叶化学成分及比值比较协调,满足优质烟叶的要求。
The main chemical constituents of tobacco leaves in Enshi tobacco-growing areas in 2008 and 2009 were analyzed. The results showed that there was not much difference between the indices of appropriate range of tobacco quality in the whole year. The average recommended quality index ranged from 27.20% to 30.54% of reducing sugar and 32.03% of total sugar % To 36.30%, total plant alkaloid 2.20% -2.76%, total nitrogen 1.66% -1.99%, two sugar difference 3.73% ~ 6.88%, reducing sugar and alkali ratio 10.29 ~ 13.35, total sugar and alkali ratio 12.12 ~ 15.88, 0.81 ~ 0.89, the ratio of total sugar to nitrogen was 16.46 ~ 21.48 and the ratio of reducing sugar to nitrogen was 14.09 ~ 17.93. Compared with the tobacco from Guizhou, Shandong and central Yunnan, the chemical composition and ratio of tobacco in the middle of Enshi tobacco were at medium level, The content of sugar and total plant alkaloids and two sugars were poor, and the ratios of reducing sugar to alkali and reducing sugars were close to that of Yunnan tobacco. Overall, the chemical composition and the ratio of tobacco leaves in the middle part of Enshi tobacco area are in harmony with each other to meet the requirements of high-quality tobacco leaves.