CN109123746B - Tobacco leaf curing method of flue-cured tobacco variety RG11 matured under rainy and light sunshine condition - Google Patents
Tobacco leaf curing method of flue-cured tobacco variety RG11 matured under rainy and light sunshine condition Download PDFInfo
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Abstract
The invention discloses a tobacco leaf baking method of a flue-cured tobacco variety RG11 matured under the condition of much rain and little sunshine, which is characterized in that according to the baking characteristics of the tobacco leaf of the flue-cured tobacco variety RG11 under the condition of much rain and little sunshine, the whole process of tobacco leaf baking is divided into seven steps of a yellow-turning stage early stage, a yellow-turning stage middle stage, a yellow-turning stage later stage, a color-fixing stage early stage, a color-fixing stage later stage, a tendon-drying stage early stage, a tendon-drying stage later stage and the like according to temperature and humidity, and the quality of the baked tobacco leaf is greatly improved; the baking method has strong operability, can obviously improve the tobacco quality and the first-class tobacco proportion of a flue-cured tobacco variety RG11, and reduces the green tobacco rate; the tobacco leaves after baking are bright in luster and oily, the style characteristics of the cured tobacco variety RG11 can be fully reflected, and the planting income of the cured tobacco variety RG11 is improved.
Description
Technical Field
The invention relates to the technical field of tobacco leaf baking, in particular to a tobacco leaf baking method of a cured tobacco variety RG11 matured under the condition of much rain and little sunshine.
Background
The baking is one of important measures for tobacco leaf production, and fresh tobacco leaves harvested in the field can show excellent quality and higher commodity value only through baking. The baking characteristics of tobacco leaves are limited by various factors such as varieties, soil, climate and the like, wherein the most important factor is the variety, and different flue-cured tobacco varieties have different baking characteristics. At present, the flue-cured tobacco baking process is generally a three-section type baking process, namely, the baking process is divided into three stages of yellowing, fixing color and drying tendon, and the yellowing stage is as follows: the starting temperature of the dry bulb is 32-35 ℃, the temperature in the yellowing period is 36-38 ℃, the temperature for completing the yellowing is 40-42 ℃, and the temperature of the wet bulb is 1-4 ℃ lower than that of the dry bulb; a color fixing stage: the dry bulb temperature is 54-55 ℃, and the wet bulb temperature is 38-40 ℃; and (3) a tendon drying stage: the dry bulb temperature is 67-68 ℃, the wet bulb temperature is 40-42 ℃, namely, the temperature and humidity indexes are regulated according to the change requirements of the tobacco leaves in each stage, heat supply and proper ventilation are carried out, the quality of the tobacco leaves is effectively embodied, and the tobacco leaves can be connected with international and universal advanced horizontal baking.
The flue-cured tobacco variety RG11 was introduced by the American Archie seed company, the institute for tobacco research, national academy of agricultural sciences in 1996, and was determined by the national committee for the examination of tobacco varieties in 12 months in 1997. At present, no special baking method aiming at a flue-cured tobacco variety RG11 exists, particularly, a baking method under the conditions of much rain and little sunshine is reported, and the traditional three-stage baking process by adding the flue-cured tobacco variety RG11 cannot reflect the baking characteristics of the flue-cured tobacco variety RG 11.
Disclosure of Invention
The invention aims to provide a tobacco leaf curing method of a flue-cured tobacco variety RG11 which matures under the conditions of much rain and little sunshine, and can better improve the curing characteristics of the flue-cured tobacco variety RG 11.
The technical purpose of the invention is realized by the following technical scheme: the tobacco leaf curing method of a flue-cured tobacco variety RG11 matured under the rainy and light sunshine condition comprises the following steps:
(1) at the early stage of the yellowing stage, tobacco leaves are put into a baking room and ignited, and the rotating speed of a fan is kept at 960 r/min; heating the dry bulb temperature to 34-36 ℃, heating the wet bulb temperature to 33-35 ℃, and stabilizing the temperature for 4-6 hours; the temperature of the dry bulb is increased to 36-38 ℃ at the temperature increasing speed of 1 ℃ per hour, and the temperature of the wet bulb is increased to 34-36 ℃; the temperature is stabilized until the leaf tips of the tobacco leaves 90 percent of the middle layer in the curing barn turn yellow by 3-4 cm; shifting to the middle stage of yellowing;
(2) in the middle stage of the yellowing stage, the rotating speed of the fan is kept at 960 r/min; raising the temperature of the dry bulb to 38-40 ℃, raising the temperature of the wet bulb to 37-39 ℃, raising the temperature of the dry bulb to 1 ℃ higher than that of the wet bulb, and stabilizing the temperature for 4-6 hours; reducing the temperature of the wet bulb to 36-38 ℃, wherein the temperature of the dry bulb is 2 ℃ higher than that of the wet bulb, and stabilizing the temperature for 4-6 hours; reducing the wet-bulb temperature to 35-37 ℃, keeping the dry-bulb temperature 3 ℃ higher than the wet-bulb temperature, and keeping the temperature until the leaves 1/2 of the tobacco leaves in the middle layer in the curing barn turn yellow and the tobacco leaves are softened; shifting to the later yellowing stage;
(3) in the later stage of the yellowing stage, the rotating speed of a fan is kept at 960 r/min; raising the temperature of the dry bulb to 40-43 ℃, and raising the temperature of the wet bulb to 35-37 ℃; keeping the temperature stable until more than 80% of yellow tobacco leaf green ribs in the middle layer in the curing barn are transferred to the early stage of the color fixing stage;
(4) at the early stage of the color fixing stage, the rotating speed of the fan is kept at 1440 r/min; heating the dry bulb to 45-47 deg.C, and heating the wet bulb to 36-37 deg.C; the temperature is stabilized until the tobacco leaves in the whole curing barn turn yellow, the branches of the tobacco leaves turn yellow, and more than 80 percent of the tobacco leaves in the middle layer have the tip hooking phenomenon; heating the dry bulb temperature to 48-50 ℃, and heating the wet bulb temperature to 36-38 ℃; the middle layer tobacco leaves in the curing barn are transferred to a small reel more than 80 percent to the later stage of the color fixing stage;
(5) at the later stage of the color fixing stage, the rotating speed of the fan is kept at 1440 r/min; heating the dry bulb temperature to 54-56 ℃, and heating the wet bulb temperature to 38-40 ℃; the temperature is stabilized until the leaves of the tobacco leaves of the full kang are completely dried, and the early stage of the dry rib stage is carried out;
(6) in the early stage of the dry rib stage, the rotating speed of a fan is kept at 960 r/min; heating the dry bulb temperature to 60-65 ℃, and heating the wet bulb temperature to 40-42 ℃; stabilizing the temperature, drying the main vein 8 of the tobacco leaf in the high-temperature layer, drying the main vein 1/2 of the tobacco leaf in the low-temperature layer, and transferring to the later stage of the stem drying stage;
(7) at the later stage of the tendon drying stage, the rotating speed of a fan is kept at 960 r/min; heating the dry bulb temperature to 65-68 ℃, and heating the wet bulb temperature to 41-43 ℃; and (5) stabilizing the temperature until the tobacco leaves in the full kang are completely dry.
The invention is further provided with: and (3) when the temperature of the dry pellets in the step (2) is 38-40 ℃, reducing the temperature of the wet pellets by 1 ℃ every 4-6 hours of temperature stabilization, and when the temperature of the dry pellets is 3 ℃ higher than that of the wet pellets, stabilizing the temperature until the tobacco leaves 1/2 in the middle layer in the curing barn become yellow.
The invention is further provided with: the heating rate of the baking process in the steps (2), (3), (4), (5) and (6) is 0.5 ℃/h.
The invention is further provided with: in the step (5), when the temperature of the dry bulb is 54-56 ℃, the temperature is stabilized until the leaves of the tobacco leaves of the full kang are completely dried, and then the baking time is prolonged for 8-12 hours.
The invention is further provided with: the whole baking process adopts a flue-cured tobacco temperature and humidity automatic control system to carry out auxiliary control, and the temperature and the humidity in the baking room are adjusted.
The invention has the following beneficial effects:
1. the mature tobacco leaves under the conditions of much rain and little illumination have unobvious mature characteristics in the mature period, the moisture content of the tobacco leaves is high, the content substances are not full, the leaves are crisp and tender, the baking resistance is poor, the baking operation is improper, and ash hanging tobacco, black distilled grain tobacco and steamed tobacco strips are easy to generate. Therefore, on the basis of the traditional tobacco leaf three-stage type baking process, according to the variety characteristics of a flue-cured tobacco variety RG11 and the quality characteristics of mature tobacco leaves under the rainy and poor lighting conditions, the adjustment of temperature and humidity indexes is regulated according to the requirements of yellowing and drying degrees of the tobacco leaves at each stage, and heat supply and proper ventilation are performed, so that the quality of the tobacco leaves under the rainy and poor lighting conditions is stably embodied;
2. the method is simple and convenient to operate, safe and safe, strong in operability and capable of well keeping the style characteristics of the mature tobacco leaves under the conditions of much rain and little illumination;
3. the technical scheme of the baking method is strong in operability, the baking quality and the first-class tobacco proportion of the tobacco leaves of the flue-cured tobacco variety RG11 can be obviously improved, the proportion of variegated tobacco and green tobacco is reduced, the proportion of the first-class tobacco leaves and the second-class tobacco leaves is improved after baking, the proportion of variegated tobacco is reduced, the slight green proportion of the tobacco leaves is reduced, the yield per mu is increased, and the style characteristics of the tobacco leaves of the flue-cured tobacco variety RG11 can.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but it should not be construed that the scope of the present invention is limited to the following examples. In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The tobacco leaf source quality in the three examples and the comparative example is the same, and there is no quality difference. The whole baking process adopts an automatic control system for flue-cured tobacco temperature and humidity to carry out auxiliary control.
Example 1:
the tobacco leaf curing method of the cured tobacco variety RG11 matured under the conditions of much rain and little sunshine comprises the following steps:
(1) at the early stage of the yellowing stage, tobacco leaves are loaded into a bulk curing barn according to a conventional mode, ignition is carried out, and the rotating speed of a fan is kept to be 960r/min, wherein all fans mentioned in the application are circulating fans which are produced by Liaoning Haidi mechanical Limited company equipment, the efficiency is more than or equal to 70%, and the air volume is 15000m3More than h, and the wind pressure is 170-250 Pa; heating the dry bulb temperature to 34-35 ℃, and heating the wet bulb temperature to 33-34 ℃; the temperature is stabilized for 4 hours, and the moisture on the surface of the tobacco leaves is removed; the temperature of the dry bulb is increased to 36-37 ℃ at the temperature rising speed of 1 ℃ per hour, and the temperature of the wet bulb is increased to 34-36 ℃; the temperature is stabilized until the leaf tips of the tobacco leaves above 90 percent of the middle layer in the curing barn turn yellow by 3-4cm, and the tobacco leaves are softened; shifting to the middle stage of yellowing;
(2) in the middle stage of the yellowing stage, the rotating speed of the fan is kept at 960 r/min; raising the temperature of the dry bulb to 38-39 ℃, raising the temperature of the wet bulb to 37-38 ℃, raising the temperature of the dry bulb to 1 ℃ higher than that of the wet bulb, and stabilizing the temperature for 4 hours; reducing the temperature of the wet bulb to 36-37 ℃, wherein the temperature of the dry bulb is 2 ℃ higher than that of the wet bulb, and stabilizing the temperature for 5 hours; reducing the wet-bulb temperature to 35-36 ℃, keeping the dry-bulb temperature 3 ℃ higher than the wet-bulb temperature, and keeping the temperature until the tobacco leaves 1/2 in the middle layer in the curing barn turn yellow; shifting to the later yellowing stage;
(3) in the later stage of the yellowing stage, the rotating speed of a fan is kept at 960 r/min; raising the temperature of the dry bulb to 40-42 ℃, and raising the temperature of the wet bulb to 36-37 ℃; stabilizing the temperature until more than 80% of the middle tobacco leaves are in green ribs, and turning to the early stage of the color fixing stage;
(4) at the early stage of the color fixing stage, the rotating speed of the fan is kept at 1440 r/min; heating the dry bulb to 45-47 deg.C, and heating the wet bulb to 36-37 deg.C; the temperature is stabilized until the tobacco leaves in the whole house become yellow, the branches of the tobacco leaves become yellow, and more than 80 percent of the tobacco leaves in the middle layer have the tip hooking phenomenon; heating the dry bulb temperature to 48-50 ℃, and heating the wet bulb temperature to 36-38 ℃; the small winding drums for over 80% of middle tobacco leaves in the curing barn are switched to the later stage of the color fixing stage;
(5) at the later stage of the color fixing stage, the rotating speed of the fan is kept at 1440 r/min; heating the dry bulb temperature to 54-56 ℃, and heating the wet bulb temperature to 38-40 ℃; the temperature is stabilized until the leaves of the tobacco leaves of the full kang are completely dried, and the early stage of the dry rib stage is carried out;
(6) in the early stage of the dry rib stage, the rotating speed of a fan is kept at 960 r/min; heating the dry bulb temperature to 62-65 ℃, and heating the wet bulb temperature to 40-42 ℃; the main vein 8 of the tobacco leaves with stable temperature and high temperature is dried, the main vein 1/2 of the tobacco leaves with low stable temperature is dried, and the later stage of the stem drying stage is carried out;
(7) at the later stage of the tendon drying stage, the rotating speed of a fan is kept at 960 r/min; heating the dry bulb temperature to 65-68 ℃, and heating the wet bulb temperature to 41-43 ℃; and (5) stabilizing the temperature until the tobacco leaves in the full kang are completely dry.
The quality and economic benefit of the flue-cured tobacco obtained by adopting the baking method are shown in table 1, and compared with a comparative example, the proportion of medium tobacco leaves on the flue-cured tobacco variety RG11 in the embodiment is improved by 8.84%, the proportion of mottled tobacco is reduced by 5.40%, and the proportion of slight green tobacco leaves in the tobacco leaves is reduced by 3.44%; the yield per mu is increased by 295.24 yuan.
Example 2
The tobacco leaf curing method of the cured tobacco variety RG11 matured under the conditions of much rain and little sunshine comprises the following steps:
(1) at the early stage of the yellowing stage, tobacco leaves are loaded into a bulk curing barn according to a conventional mode, ignition is carried out, and the rotating speed of a fan is kept to 960 r/min; the temperature of the dry bulb is raised to 34-35 ℃, and the temperature of the wet bulb is raised to 33-34 ℃; the temperature is stabilized for 5 hours, and the moisture on the surface of the tobacco leaves is removed; the temperature of the dry bulb is increased to 37-38 ℃ at the temperature rising speed of 1 ℃ per hour, and the temperature of the wet bulb is increased to 35-36 ℃; the temperature is stabilized until the leaf tips of the tobacco leaves above 90 percent of the middle layer in the curing barn turn yellow by 3-4cm, and the tobacco leaves are softened; shifting to the middle stage of yellowing;
(2) in the middle stage of the yellowing stage, the rotating speed of the fan is kept at 960 r/min; raising the temperature of the dry bulb to 38-39 ℃, raising the temperature of the wet bulb to 37-38 ℃, raising the temperature of the dry bulb to 1 ℃ higher than that of the wet bulb, and stabilizing the temperature for 6 hours; reducing the temperature of the wet bulb to 36-37 ℃, wherein the temperature of the dry bulb is 2 ℃ higher than that of the wet bulb, and stabilizing the temperature for 4 hours; reducing the wet-bulb temperature to 35-36 ℃, keeping the dry-bulb temperature 3 ℃ higher than the wet-bulb temperature, and keeping the temperature until the tobacco leaves 1/2 in the middle layer in the curing barn turn yellow; shifting to the later yellowing stage;
(3) in the later stage of the yellowing stage, the rotating speed of a fan is kept at 960 r/min; raising the temperature of the dry bulb to 41-43 ℃, and raising the temperature of the wet bulb to 36-37 ℃; stabilizing the temperature until more than 80% of the middle tobacco leaves are in green ribs, and turning to the early stage of the color fixing stage;
(4) at the early stage of the color fixing stage, the rotating speed of the fan is kept at 1440 r/min; heating the dry bulb temperature to 46-47 ℃, and heating the wet bulb temperature to 36-37 ℃; the temperature is stabilized until the tobacco leaves in the whole house become yellow, the branches of the tobacco leaves become yellow, and more than 80 percent of the tobacco leaves in the middle layer have the tip hooking phenomenon; heating the dry bulb temperature to 49-50 ℃, and heating the wet bulb temperature to 37-38 ℃; the small winding drums for over 80% of middle tobacco leaves in the curing barn are switched to the later stage of the color fixing stage;
(5) at the later stage of the color fixing stage, the rotating speed of the fan is kept at 1440 r/min; heating the dry bulb temperature to 55-56 ℃, and heating the wet bulb temperature to 39-40 ℃; the temperature is stabilized until the leaves of the tobacco leaves of the full kang are completely dried, and the early stage of the dry rib stage is carried out;
(6) in the early stage of the dry rib stage, the rotating speed of a fan is kept at 960 r/min; heating the dry bulb temperature to 62-65 ℃, and heating the wet bulb temperature to 40-41 ℃; the main vein 8 of the tobacco leaves with stable temperature and high temperature is dried, the main vein 1/2 of the tobacco leaves with low stable temperature is dried, and the later stage of the stem drying stage is carried out;
(7) at the later stage of the tendon drying stage, the rotating speed of a fan is kept at 960 r/min; heating the dry bulb temperature to 66-68 ℃, and heating the wet bulb temperature to 41-42 ℃; and (5) stabilizing the temperature until the tobacco leaves in the full kang are completely dry.
The quality and economic benefit of the flue-cured tobacco obtained by adopting the baking method are shown in table 1, and compared with the comparative example, the proportion of medium tobacco leaves on the flue-cured tobacco variety RG11 is increased by 11.76 percent, the proportion of mottled tobacco is reduced by 4.31 percent, and the proportion of slight green tobacco leaves is reduced by 7.45 percent; the yield per mu is increased by 429.71 yuan.
Example 3
The tobacco leaf curing method of the cured tobacco variety RG11 matured under the conditions of much rain and little sunshine comprises the following steps:
(1) at the early stage of the yellowing stage, tobacco leaves are loaded into a bulk curing barn according to a conventional mode, ignition is carried out, and the rotating speed of a fan is kept to 960 r/min; the temperature of the dry bulb is raised to 34-35 ℃, and the temperature of the wet bulb is raised to 33-34 ℃; the temperature is stabilized for 6 hours, and the moisture on the surface of the tobacco leaves is removed; the temperature of the dry bulb is increased to 37-38 ℃ at the temperature rising speed of 1 ℃ per hour, and the temperature of the wet bulb is increased to 35-36 ℃; the temperature is stabilized until the leaf tips of the tobacco leaves above 90 percent of the middle layer in the curing barn turn yellow by 3-4cm, and the tobacco leaves are softened; shifting to the middle stage of yellowing;
(2) in the middle stage of the yellowing stage, the rotating speed of the fan is kept at 960 r/min; raising the temperature of the dry bulb to 39-40 ℃, raising the temperature of the wet bulb to 38-39 ℃, raising the temperature of the dry bulb to 1 ℃ higher than that of the wet bulb, and stabilizing the temperature for 5 hours; reducing the temperature of the wet bulb to 36-37 ℃, wherein the temperature of the dry bulb is 2 ℃ higher than that of the wet bulb, and stabilizing the temperature for 6 hours; reducing the wet-bulb temperature to 35-36 ℃, keeping the dry-bulb temperature 3 ℃ higher than the wet-bulb temperature, and keeping the temperature until the tobacco leaves 1/2 in the middle layer in the curing barn turn yellow; shifting to the later yellowing stage;
(3) in the later stage of the yellowing stage, the rotating speed of a fan is kept at 960 r/min; raising the temperature of the dry bulb to 42-43 ℃, and raising the temperature of the wet bulb to 36-37 ℃; stabilizing the temperature until more than 80% of the middle tobacco leaves are in green ribs, and turning to the early stage of the color fixing stage;
(4) at the early stage of the color fixing stage, the rotating speed of the fan is kept at 1440 r/min; heating the dry bulb temperature to 45-46 ℃, and heating the wet bulb temperature to 36-37 ℃; the temperature is stabilized until the tobacco leaves in the whole house become yellow, the branches of the tobacco leaves become yellow, and more than 80 percent of the tobacco leaves in the middle layer have the tip hooking phenomenon; heating the dry bulb temperature to 48-49 ℃, and heating the wet bulb temperature to 36-37 ℃; the small winding drums for over 80% of middle tobacco leaves in the curing barn are switched to the later stage of the color fixing stage;
(5) at the later stage of the color fixing stage, the rotating speed of the fan is kept at 1440 r/min; heating the dry bulb temperature to 55-56 ℃, and heating the wet bulb temperature to 39-40 ℃; the temperature is stabilized until the leaves of the tobacco leaves of the full kang are completely dried, and the early stage of the dry rib stage is carried out;
(6) in the early stage of the dry rib stage, the rotating speed of a fan is kept at 960 r/min; heating the dry bulb temperature to 60-63 ℃, and heating the wet bulb temperature to 40-41 ℃; the main vein 8 of the tobacco leaves with stable temperature and high temperature is dried, the main vein 1/2 of the tobacco leaves with low stable temperature is dried, and the later stage of the stem drying stage is carried out;
(7) at the later stage of the tendon drying stage, the rotating speed of a fan is kept at 960 r/min; heating the dry bulb temperature to 65-66 ℃, and heating the wet bulb temperature to 41-42 ℃; and (5) stabilizing the temperature until the tobacco leaves in the full kang are completely dry.
The quality and economic benefit of the flue-cured tobacco obtained by adopting the baking method are shown in table 1, and compared with the comparative example, the proportion of medium tobacco leaves on the flue-cured tobacco variety RG11 is improved by 8.12 percent, the proportion of mottled tobacco is reduced by 4.66 percent, and the proportion of slight green tobacco leaves is reduced by 3.46 percent; the yield per mu is increased by 257.86 yuan.
Comparative example
Flue-cured tobacco variety RG11 is baked to traditional three-stage formula baking process effect:
dividing the baking process into three stages of yellowing, fixing color and drying tendon, wherein the starting temperature of a dry bulb is 32 ℃, the temperature in the yellowing stage is increased to 38-40 ℃ at 0.5 ℃/h, the temperature is stabilized to be yellow, the temperature for completing the yellowing is 40-42 ℃, the temperature of a wet bulb is 4 ℃ lower than that of the dry bulb, and the yellow leaf of the top Taiwan tobacco leaves is slightly green and the main pulse is soft; in the color fixing stage, the temperature is raised by 1 ℃ at the temperature raising speed of about 3 hours on average, and the wet bulb temperature is controlled to be 37-38 ℃ so that tobacco ribs are fully yellow; the temperature rise speed can be increased to 1 hour, the temperature rise is 1 ℃, the wet bulb temperature is kept at 38-39 ℃, the dry bulb temperature is 54-55 ℃, and the tobacco leaves are dried in a large reel; and in the stem drying stage, the dry bulb temperature is 67-68 ℃, the wet bulb temperature is 42-45 ℃, and the main vein of the top tobacco leaves is dried completely to be dried in a whole furnace.
By adopting the baking method, the proportion of medium tobacco leaves on the tobacco leaves after the flue-cured tobacco variety RG11 is baked is 77.78%, the proportion of mottled tobacco is 10.36%, and the proportion of slight green of the tobacco leaves is 11.86%; the yield per mu is 2787.74 yuan.
Table 1: comparison table for quality and economic benefit of flue-cured tobacco obtained by adopting different baking methods
| Upper and middle tobacco leaf ratio | Proportion of mottled tobacco | Micro-strip green ratio of tobacco leaves | Output per mu | |
| Example 1 | 86.62％ | 4.96％ | 8.42％ | 3082.98 yuan |
| Example 2 | 89.54％ | 6.05％ | 4.41％ | 3217.45 yuan |
| Example 3 | 85.90％ | 5.70％ | 8.40％ | 3045.42 yuan |
| Comparative example | 77.78％ | 10.36％ | 11.86％ | 2787.74 yuan |
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (5)
1. A tobacco leaf curing method of a flue-cured tobacco variety RG11 matured under the conditions of much rain and little sunshine is characterized by comprising the following steps of: the method comprises the following steps:
(1) at the early stage of the yellowing stage, tobacco leaves are put into a baking room and ignited, and the rotating speed of a fan is kept at 960 r/min; heating the dry bulb temperature to 34-36 ℃, heating the wet bulb temperature to 33-35 ℃, and stabilizing the temperature for 4-6 hours; the temperature of the dry bulb is increased to 36-38 ℃ at the temperature increasing speed of 1 ℃ per hour, and the temperature of the wet bulb is increased to 34-36 ℃; the temperature is stabilized until the leaf tips of the tobacco leaves 90 percent of the middle layer in the curing barn turn yellow by 3-4 cm; shifting to the middle stage of yellowing;
(2) in the middle stage of the yellowing stage, the rotating speed of the fan is kept at 960 r/min; raising the temperature of the dry bulb to 38-40 ℃, raising the temperature of the wet bulb to 37-39 ℃, raising the temperature of the dry bulb to 1 ℃ higher than that of the wet bulb, and stabilizing the temperature for 4-6 hours; reducing the temperature of the wet bulb to 36-38 ℃, wherein the temperature of the dry bulb is 2 ℃ higher than that of the wet bulb, and stabilizing the temperature for 4-6 hours; reducing the wet-bulb temperature to 35-37 ℃, keeping the dry-bulb temperature 3 ℃ higher than the wet-bulb temperature, and keeping the temperature until the leaves 1/2 of the tobacco leaves in the middle layer in the curing barn turn yellow and the tobacco leaves are softened; shifting to the later yellowing stage;
(3) in the later stage of the yellowing stage, the rotating speed of a fan is kept at 960 r/min; raising the temperature of the dry bulb to 40-43 ℃, and raising the temperature of the wet bulb to 35-37 ℃; keeping the temperature stable until more than 80% of yellow tobacco leaf green ribs in the middle layer in the curing barn are transferred to the early stage of the color fixing stage;
(4) at the early stage of the color fixing stage, the rotating speed of the fan is kept at 1440 r/min; heating the dry bulb to 45-47 deg.C, and heating the wet bulb to 36-37 deg.C; the temperature is stabilized until the tobacco leaves in the whole curing barn turn yellow, the branches of the tobacco leaves turn yellow, and more than 80 percent of the tobacco leaves in the middle layer have the tip hooking phenomenon; heating the dry bulb temperature to 48-50 ℃, and heating the wet bulb temperature to 36-38 ℃; the middle layer tobacco leaves in the curing barn are transferred to a small reel more than 80 percent to the later stage of the color fixing stage;
(5) at the later stage of the color fixing stage, the rotating speed of the fan is kept at 1440 r/min; heating the dry bulb temperature to 54-56 ℃, and heating the wet bulb temperature to 38-40 ℃; the temperature is stabilized until the leaves of the tobacco leaves of the full kang are completely dried, and the early stage of the dry rib stage is carried out;
(6) in the early stage of the dry rib stage, the rotating speed of a fan is kept at 960 r/min; heating the dry bulb temperature to 60-65 ℃, and heating the wet bulb temperature to 40-42 ℃; stabilizing the temperature, drying the main vein 8 of the tobacco leaf in the high-temperature layer, drying the main vein 1/2 of the tobacco leaf in the low-temperature layer, and transferring to the later stage of the stem drying stage;
(7) at the later stage of the tendon drying stage, the rotating speed of a fan is kept at 960 r/min; heating the dry bulb temperature to 65-68 ℃, and heating the wet bulb temperature to 41-43 ℃; and (5) stabilizing the temperature until the tobacco leaves in the full kang are completely dry.
2. The method of curing tobacco leaf of flue-cured tobacco variety RG11 matured under rainy and poor sunlight conditions according to claim 1, wherein the method comprises: and (3) when the temperature of the dry pellets in the step (2) is 38-40 ℃, reducing the temperature of the wet pellets by 1 ℃ every 4-6 hours of temperature stabilization, and when the temperature of the dry pellets is 3 ℃ higher than that of the wet pellets, stabilizing the temperature until the tobacco leaves 1/2 in the middle layer in the curing barn become yellow.
3. The method of curing tobacco leaf of flue-cured tobacco variety RG11 matured under rainy and poor sunlight conditions according to claim 1, wherein the method comprises: the heating rate of the baking process in the steps (2), (3), (4), (5) and (6) is 0.5 ℃/h.
4. The method of curing tobacco leaf of flue-cured tobacco variety RG11 matured under rainy and poor sunlight conditions according to claim 1, wherein the method comprises: in the step (5), when the temperature of the dry bulb is 54-56 ℃, the temperature is stabilized until the leaves of the tobacco leaves of the full kang are completely dried, and then the baking time is prolonged for 8-12 hours.
5. The method of curing tobacco leaf of flue-cured tobacco variety RG11 matured under rainy and poor sunlight conditions according to claim 1, wherein the method comprises: the whole baking process adopts a flue-cured tobacco temperature and humidity automatic control system to carry out auxiliary control, and the temperature and the humidity in the baking room are adjusted.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811313146.6A CN109123746B (en) | 2018-11-06 | 2018-11-06 | Tobacco leaf curing method of flue-cured tobacco variety RG11 matured under rainy and light sunshine condition |
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| CN109892682A (en) * | 2019-03-12 | 2019-06-18 | 潍坊市烟草专卖局 | A kind of baking method of flood tobacco leaf |
| CN109770410A (en) * | 2019-03-21 | 2019-05-21 | 贵州省烟草科学研究院 | A kind of tobacco leaf picking and roasting method |
| CN110122913A (en) * | 2019-03-27 | 2019-08-16 | 河南中烟工业有限责任公司 | A kind of baking process of flue-cured tobacco cultivars Henan cigarette 6 |
| CN110447943A (en) * | 2019-08-15 | 2019-11-15 | 深圳中燃哈工大燃气技术研究院有限公司 | A kind of method that natural gas direct combustion type heats tobacco flue-curing house and junior tobacco leaf |
| CN110786531A (en) * | 2019-11-19 | 2020-02-14 | 云南省烟草农业科学研究院 | Tobacco leaf modulation method suitable for air source heat pump bulk curing barn |
| CN114190575B (en) * | 2020-09-18 | 2023-01-20 | 贵州省烟草公司遵义市公司汇川分公司 | Process for reducing mould head tobacco leaf baking |
| CN112493524B (en) * | 2020-12-17 | 2022-07-05 | 云南省烟草农业科学研究院 | Baking method of striking green tobacco leaves in mature period |
| CN114568729B (en) * | 2022-01-27 | 2023-05-30 | 贵州省烟草公司黔西南州公司 | Method for baking fresh and sweet fragrant tobacco leaves and baking equipment thereof |
| CN115836741A (en) * | 2022-11-10 | 2023-03-24 | 河南省烟草公司平顶山市公司 | Baking method for improving baking quality of Y2001 flue-cured tobacco variety and application |
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