Flue-cured tobacco upper leaf modulation method

Abstract

The invention discloses a flue-cured tobacco upper leaf modulation method, which is characterized in that tobacco leaf raw materials are put into a curing barn for curing after being subjected to earlier stage treatment. The method comprises the steps of 1) earlier stage of yellowing, 2) middle stage of yellowing, 3) later stage of yellowing, 4) earlier stage of color fixing, 5) later stage of color fixing, and 6) stem drying stage. The earlier stage treatment of the tobacco leaf raw materials comprises chopping and harvesting, hanging on a rod and charging, wherein the chopping and harvestingrefers to chopping and harvesting 4-6 pieces of fresh tobacco leaves at the upper part, the chopping and harvesting position is 10-15cm below the top, and the fresh tobacco leaves need to have the following obvious characteristics: mature spots, white and bright main veins and leaf edge and leaf tip curl hook sagging. According to the modulation method, modulation is conducted by accurately controlling the temperature rising speed, the temperature and humidity points and the temperature stabilizing time of each stage and observing the change condition of the tobacco leaves of each stage according to the baking characteristics of the upper tobacco leaves with stems. The method is easy to operate and flexible in adjustment, and achieves the baking targets of reducing labor and cost, reducing the proportion of ash-hanging miscellaneous tobacco, improving the income of tobacco growers and the like.

Description

technical field [0001] The invention belongs to the technical field of tobacco leaf preparation, and in particular relates to a method for preparing the upper leaves of flue-cured tobacco. Background technique [0002] With the deepening of the high-quality development of tobacco leaves, in terms of tobacco leaf curing, the previous blue veins and ash-hanging tobacco leaves will be greatly reduced, which puts forward higher requirements for tobacco leaf curing. On the one hand, the upper tobacco leaves are difficult to roast, serious ash, and poor quality after roasting are seriously prominent, which has become a bottleneck restricting the high-quality development of tobacco leaves; , Severe disease and insect pests, rainy and little sunshine caused by special climate, heavy procurement tasks and other factors, resulting in serious baking losses (upper leaves amount to more than 60%). In terms of the loss types of upper tobacco leaves during curing, it is mainly due to the ...

AI Technical Summary

Problems solved by technology

On the one hand, the upper tobacco leaves are difficult to roast, serious ash, and poor quality after roasting are seriously prominent, which has become a bottleneck restricting the high-quality development of tobacco leaves; , Severe disease and insect pests, rainy and little sunshine caused by special climate, heavy procurement tasks and other factors, resulting in serious baking loss (upper leaves amount to more than 60%)

Images