Abstract：In 2007—2008, taking Jiyan 9 which widely planted in Yanbian as testing material, dynastic variations of chemical components, physical characters and aroma quality of flue-cured tobacco were studied. The result indicated that: the chemical components of 65 days of tobacco leaves were more harmonious; The physical characters perform well; The total aroma constituents the other aroma constituents and neophytadiene were high; The browning reaction products and carotenoids contents improved; The smoking scores were the highest, the aroma quality and quantity were the best. In conclusion, tobacco leaves were harvested at 65d with the best cured leaf quaulity.
2010, Vol. 28 
