烤烟打顶后,上部烟叶明显增大变厚,于物质含量增加,含水量减少。打顶后的上部烟叶与未打顶的上部烟叶有一定差异,在生产中由于烟农对此缺乏了解,所以烤坏烟的现象较为普遍。上部烟叶的耐熟性较好,要严格掌握采收时烟叶的成熟度。一般要求在烟叶达到完熟时进行采收,以防止青烟的产生。烘烤时适当延长变黄后期的烘烤时间,使烟叶充分变黄,减慢定色前期和中期的升温速度。为防止烘烤时挂灰,定色期排潮要及时,升温要稳,决不可降温掉度。几个时期的具体烘烤方法如下; Flue-cured tobacco topping, the upper part of the tobacco significantly increased thickening, increased material content, reduced water content. There is a certain difference between the top tobacco leaves and the top tobacco leaves that are not topped. Because of the lack of understanding by tobacco farmers in production, the phenomenon of roasted tobacco is more common. Upper maturity of the tobacco is better, to strictly grasp the maturity of tobacco harvest. It is generally required to harvest the tobacco when it reaches maturity to prevent the generation of smoke. Appropriate to extend the late yellowing baking time, so that the full yellowing of tobacco, slow down the pre-fixed and medium-temperature heating rate. To prevent the hanging ash when baking, regular color tide should be promptly heated to stabilize, never drop off degrees. Specific baking methods for several periods are as follows;