A harvesting and curing process of upper part tobacco for growing special flue-cured tobacco

Abstract

The invention relates to an upper tobacco harvesting and curing process for growing special flue-cured tobacco. The process includes that if color is fixed before 42 DEG C, tobacco leaves are less prone to browning reaction and free of 'black bad tobacco', so that yellow tobacco rate after curing is high; the tobacco leaves after being cured contain a lot of aromatic substances and are large in aroma amount. The yellowing period of the flue-cured tobacco is high in yellowing temperature, high in humidity and long in time, and aromatic premise substances decomposed by the tobacco leaves are large in amount; when dry balls are at 52 DEG C in a color fixing period, synthesis time of the aromatic substances is prolonged; highest temperature is lower than that of conventional curing processes by about 3 DEG C in a stem drying period, and few aromatic substances are evaporated, so that the tobacco leaves after being cured contain a lot of aromatic substances and are large in aroma amount; usability of upper tobacco of the flue-cured tobacco is improved. Upper leaves start to be harvested when the upper leaves are about 60 days old, at the time, leaves inserted on tobacco plants are still large in amount, and nutrition of the tobacco plants do not concentrate on the upper leaves, so that big, deep and thick phenomena of the upper leaves are avoided, and regional characteristics of the flue-cured tobacco are ensured.

Description

technical field [0001] The invention relates to the field of crop production, in particular to an upper tobacco harvesting and curing process for growing special flue-cured tobacco. Background technique [0002] At present, the last major link in flue-cured tobacco production is the baking modulation of flue-cured tobacco. The traditional curing method of flue-cured tobacco is mainly "three-stage curing process of flue-cured tobacco". At present, most flue-cured tobacco production areas in China adopt this method or other related processes that have been partially adjusted on this process. According to the position of the tobacco leaves from bottom to top, and according to the "leaf age" and the "yellowness" of the tobacco leaves, about 3 pieces are harvested and roasted in sequence at a time. The entire suitable harvesting and roasting period is 50 days about. [0003] The disadvantages of the traditional flue-cured tobacco harvesting and baking process are: harvesting "...

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the traditional flue-cured tobacco harvesting and baking process are: harvesting "from bottom to top" according to the planting part of the tobacco leaves, but in the production process of flue-cured tobacco, due to reasons such as variety, fertilization, irrigation, and transplanting period, the tobacco plant's plant growth rate will be reduced. At this time, the lower tobacco leaves are harvested first "from bottom to top", and the lower tobacco leaves will become "black dross" after being baked due to insufficient light and malnutrition before harvesting. Tobacco” loses its economic value, and the upper tobacco grows too long, the contents accumulate too much, and the suitable curing season has passed, resulting in poor curability of the upper tobacco and poor usability of the tobacco leaves after roasting, eventually resulting in The overall benefit of tobacco farming has declined