烤烟在田间的生长过程中形成了成熟叶片的素质,不同荣质的鲜叶。烘烤后其外观品质与内在品质也不同,可以说鲜叶的素质是烘烤后干叶品质的基础。烤后干叶的外观品质与其内在香吃味密切相关。故烟叶的出售以外观品质来评定。但是,近年来,由于易烤品种的育成推广,烤烟技术的提高以及烤烟设备性能的改善,使一些素质欠佳的鲜叶也能烘烤出鲜亮的色泽,大大降低了干叶外观品质与内在品质的相关性,出现了干叶外观品质好而内在品质不佳的现象。另外, Flue-cured tobacco in the field during the growth of the formation of a mature leaf quality, different quality of fresh leaves. After baking their appearance quality and inherent quality is also different, it can be said that the quality of fresh leaves is the basis of the quality of dried leaves after baking. The quality of the dried leaves after roasting is closely related to their intrinsic fragrance. Therefore, the sale of tobacco to evaluate the appearance of quality. However, in recent years, due to the promotion of the easy-to-bake varieties, the improvement of flue-cured tobacco technology and the improvement of the performance of flue-cured tobacco equipment, the fresh leaves with poor quality can also be baked with bright colors, greatly reducing the appearance and quality of dry leaves The quality of the correlation, there has been a dry leaf appearance of good quality and poor quality of the phenomenon. In addition,