High-yield integrated production method for cigar wrappers

Abstract

A high-yield integrated production method for cigar wrappers, comprising: building a four-in-one production facility system integrating seedling raising, transplanting, air-curing and fermentation processes of cigar wrapper tobaccos, wherein the illumination intensity in the production facility system is 75-160 µmol / (m2·s), the temperature is 25+ / -5°C, and the humidity is 75%+ / -10%; when transplanting tobacco seedlings, using a nutrient solution for perfusion treatment, wherein based on Fe, the iron content in the nutrient solution is 0.3-0.7 mM, and based on boric acid, the boron content therein is 9.5-13.0 mg / L; and transplanting of the cigar wrapper tobaccos takes up the main space in the production facility system, and seedling raising, air-curing and fermentation together take up the remaining space in the production facility system; and with a cigar growth season lasting for 110-140 days, carrying out intercropping planting for two or three seasons each year. By means of intensification of the production facility system and accurate control of the production environment, the yield of cigar wrappers is improved, and the investment in production facilities and labor are reduced.

Description

An integrated production method for high-yield cigar wrapper Technical Field

[0001] The present invention relates to the technical field of tobacco agricultural production, and in particular to an integrated production method for tobacco wrappers with high output rate. Background Art

[0002] Wrapper tobacco is the most crucial component of cigars, especially mid-range and high-end handmade cigars. High-quality wrapper requires thin leaves with fine, straight veins, a flat surface, good oil content, uniformity, and no cracks or holes. These high quality requirements make production technically challenging. Wrapper tobacco production in my country is still in its infancy, with seedling cultivation, transplanting, curing, and fermentation all performed separately. This creates a long production process, occupies numerous production facilities, and generally involves relatively crude techniques. Wrapper yields generally fall below 10%. Over the past three years, through technological advancements, some cigar-producing regions have achieved the initial integration of wrapper and filler production. This involves developing customized production technologies for each stage, including variety, cultivation, curing, and fermentation, tailored to the quality requirements of the respective wrappers and fillers. While this has significantly improved wrapper yields, they still generally remain below 30%. This still lags significantly behind the 60% yields achieved in high-quality wrapper-producing regions abroad, such as Cuba and the Dominican Republic. This has led to a shortage of wrapper raw materials in the domestic cigar industry, forcing it to rely heavily on imports. Optimizing the cultivation and production technology of cigar tobacco and increasing the output rate of cigar wrappers are the biggest technical challenges currently facing major cigar tobacco producing areas and cigar manufacturers.

[0003] In traditional wrapper production, the entire process is divided into four relatively independent steps: seedling cultivation, field planting, air-drying, and fermentation. The seedling cultivation stage requires specialized facilities, such as solar greenhouses or plastic-steel sheds, equipped with necessary ventilation and temperature control. Transplanting and field planting involve field preparation, fertilization, ridging, mulching, topdressing, irrigation, and pest and disease control. These steps are labor-intensive and highly influenced by climatic conditions (such as drought, flooding, windstorms, and hail). Field light, temperature, water, and fertilizer are difficult to control. Furthermore, air-drying and fermentation require separate production facilities, which are costly and inefficient, not in line with the current trend toward efficient and intensive production technologies.

[0004] Summary of the Invention

[0005] In view of the above shortcomings of the existing technology, the present invention provides an integrated production method with high output rate of citrus wrappers, which is specifically achieved through the following technologies.

[0006] A high-yield integrated production method for citrus wrappers, comprising:

[0007] Build a "four-in-one" production facility system that integrates the processes of wrapper tobacco seedling cultivation, transplanting, drying, and fermentation. The light intensity in the production facility system is 75-160μmol / (㎡·s), the temperature is 25±5℃, and the relative air humidity is 75%±10%;

[0008] When transplanting tobacco seedlings, a nutrient solution is used for irrigation. The nutrient solution is a high-iron and boron-rich nutrient solution, wherein the iron content is 0.2-0.7 mM as Fe and the boron content is 9.5-13.0 mg / L as boric acid.

[0009] The transplanting and planting of wrapper tobacco leaves occupies the main space within the production facility system, while seedling cultivation, air-drying and fermentation jointly occupy the remaining space within the production facility system; with a cigar growing season of 110-140 days, two or three seasons of intercropping are implemented each year.

[0010] It should be noted that the high-yield integrated production method for cigar wrappers provided by the present invention integrates the entire process of cigar seedling cultivation, transplanting, drying and fermentation, and forms a complete set of method systems for how to improve the output rate of cigar wrappers, realizing the "four-in-one" intensive and efficient use of facility space, and improving the high output rate of cigar wrappers. In order to ensure the stability of the tobacco cultivation environment, the entire production facility system is generally carried out in a greenhouse or greenhouse. There is no special restriction on the floor space of the production facility system, and it can be adjusted according to local conditions. Small greenhouses, such as those covering an area of ​​20-30 square meters, can be used for cultivation, and large greenhouses, such as those covering an area of ​​2,000 square meters (single seat with 6 spans) or 4,000 square meters (single seat with 10 spans), can be used for cultivation.

[0011] It should be noted that the production facility system utilizes the facilities, equipment, culture media, and nutrient solutions commonly used in the seedling raising, transplanting, air-drying, and fermentation processes. Optionally, the seedling raising process includes a nutrient solution tank; the transplanting and planting process includes a nutrient solution tank, a three-dimensional cultivation rack, planting trays, planting containers, culture media, and an irrigation system; the air-drying process includes auxiliary tools such as sunshade nets, air-drying racks, air-drying poles, and air-drying forks, as well as temperature and humidity control equipment to cope with extreme weather conditions during the air-drying process; and the fermentation process includes a fermentation box, moisture-proof and dust-proof cloth, tobacco pile temperature and humidity monitoring equipment, and temperature and humidity control equipment within the fermentation room.

[0012] Preferably, 90% of the space in the production facility system is used for transplanting and planting wrapper tobacco leaves, and 10% is used for seedling raising, air-drying and fermentation of wrapper tobacco leaves.

[0013] Preferably, the nutrient solution is prepared by dissolving a large and medium element reagent in water, and then adding an iron salt mother solution and a trace element mother solution;

[0014] In the nutrient solution, the major and medium elements provided include 272 mg / L of calcium nitrate tetrahydrate, 404 mg / L of potassium nitrate, 109 mg / L of potassium dihydrogen phosphate, 61 mg / L of triammonium phosphate, and 246 mg / L of magnesium sulfate, based on a pure N mass concentration of 0.01%;

[0015] The iron supply in the nutrient solution includes 83.40-194.60 mg / L of ferrous sulfate heptahydrate and 111.65-260.55 mg / L of the chelating agent disodium ethylenediaminetetraacetic acid dihydrate, based on the molar concentration of pure Fe of 0.3-0.7 mM; the trace elements supplied in the nutrient solution include 0.83 mg / L of potassium iodide, 9.5-13.0 mg / L of boric acid, 22.3 mg / L of manganese sulfate tetrahydrate, 8.6 mg / L of zinc sulfate heptahydrate, 0.25 mg / L of sodium molybdate dihydrate, 0.025 mg / L of copper sulfate pentahydrate, and 0.025 mg / L of cobalt chloride hexahydrate.

[0016] More preferably, the method of using the nutrient solution is:

[0017] During the 1st to 20th day of the transplanting and planting process, the concentration of the nutrient solution is 0.03%, and the total dosage is 3-5 L / plant;

[0018] On the 21st to 30th day of the transplanting and planting process, the concentration of the nutrient solution is 0.045%, and the total dosage is 5-7 L / plant; and the supplementary amount on the 21st day is based on the remaining 50% of the nutrients in the nutrient solution in the nutrient solution tank before supplementation;

[0019] During the 31st to 60th day of the transplanting and planting process, the concentration of the nutrient solution is 0.06%, and the total dosage is 7-10 L / plant; and the nutrient solution is replenished once on the 31st, 41st and 51st day, and the amount of each replenishment is based on the remaining 50% of the nutrients in the nutrient solution in the nutrient solution tank before replenishment;

[0020] Starting from the 61st day of transplanting and planting, the concentration of the nutrient solution is 0.045%, and the total dosage is 7-10L / plant; and the nutrient solution is replenished once on the 61st and 71st days, and the amount of each replenishment is based on 50% of the nutrients remaining in the nutrient solution in the nutrient solution tank before replenishment.

[0021] Preferably, 10-15 days after topping the wrapper tobacco leaves, the nutrient solution is replaced with clean water to cut off the nutrient supply; during harvesting, the interval between two adjacent harvests is 12-18 days.

[0022] Preferably, the transplanting and planting is to use 2-3 layers of cultivation racks for transplanting wrapper tobacco leaves, and the spacing between the cultivation rack layers is ≥ 2m; each layer of the cultivation rack except the top layer adopts supplementary light measures, and the supplementary light intensity is 50-150μmol / (m 2 ·s).

[0023] Preferably, the seedlings of wrapper tobacco leaves are raised by rolling intercropping in a 50-day cycle. When three-season intercropping is adopted, the second season seedlings are sown 50 days before the end of the first season tobacco leaves harvest, and the third season seedlings are sown 50 days before the end of the second season tobacco leaves harvest.

[0024] Preferably, the wrapper tobacco leaves are air-dried on foldable airing racks in the airing area; the tobacco leaves of the last season of each year are air-dried on foldable airing racks or on cultivation racks.

[0025] Preferably, the fermentation of the wrapper tobacco leaves is completed in a detachable fermentation room constructed with a roll-up film in the area left empty after air-drying.

[0026] Compared to existing technologies, this invention significantly improves wrapper tobacco yield by organically integrating key production processes, including seedling cultivation, transplanting, air-drying, and fermentation, to achieve intensive and efficient production management. Precisely controlling production environmental factors such as temperature and humidity, as well as the supply of growth factors like nutrients and light, significantly increases wrapper yield.

[0027] Ultimately, the citrus wrapper output rate can reach over 65%, the investment in production facilities can be reduced by over 40%, and the labor force can be reduced by over 20%; the incidence of pests and diseases is significantly reduced, the maturity of the citrus wrapper is significantly improved, and the comprehensive quality such as appearance quality, physical processing performance and sensory quality is significantly better than the traditional production model. DETAILED DESCRIPTION

[0028] The technical solutions of the present invention are described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] Unless otherwise specified in the following examples and comparative examples, conventional tobacco cultivation techniques are used for the seedling raising, transplanting, air-drying, and fermentation processes of cigar plants. For details, reference may be made to the technical content on cigar cultivation in Chapter 20, Section 5 of "Chinese Tobacco Cultivation" (edited by the Tobacco Research Institute of the Chinese Academy of Agricultural Sciences, November 2005).

[0030] Example 1

[0031] The high-yield integrated production method for wrapper provided in this embodiment is a wrapper tobacco planting experiment conducted in a greenhouse in Wuchang, Wuhan City, Hubei Province in 2023. The wrapper variety is CX-26.

[0032] The production facility system includes a two-tiered three-dimensional cultivation rack (including a folding cantilever to hold the tobacco stems during the drying operation), a nutrient solution tank, planting pots, culture medium, nutrient solution, and accessories. 90% of the total production facility space is used for planting, and 10% is used for seedling cultivation, drying, and fermentation.

[0033] According to the growth and development rules of cigar tobacco leaves, with a growth period of 140 days as one growing season, combined with the climatic characteristics of the planting area, appropriate temperature and humidity control equipment is used to implement two planting seasons each year; the first season is transplanted in mid-February and harvested in mid-June; the second season is transplanted in mid-June and harvested in mid-December.

[0034] The seedling raising, transplanting, drying and fermentation process and requirements of the cigars in this experiment are as follows:

[0035] 1. Seedling cultivation

[0036] The seedlings are 50 days old and planted according to conventional floating technology. Under the two-season planting model, the first season seedlings are planted in late November and the second season seedlings are planted in early May.

[0037] 2. Transplanting

[0038] (1) Equipment and material requirements

[0039] Planting pots: 10 planting pots are set up in each nutrient trough.

[0040] Substrate: Current general peat-type seedling substrate (prepare at 0.7kg / plant on dry basis), decomposed cake fertilizer (prepare at 0.07kg / plant on dry basis). Moisten the substrate with appropriate amount of water and mix it in the pot to reach 1kg / pot (including the weight of the pot).

[0041] Nutrient solution tank: The tank is 20 cm deep and 20 cm wide, and the length is determined according to the ground space. The spacing between plants is 45 cm, and the row spacing (i.e. the longitudinal center wheelbase of adjacent nutrient solution tanks) is 1.0 m. A waterproof film is laid in the nutrient solution tank, and a 4 cm wide and 6 cm high foam strip or wooden square is placed under the film to support the planting pot and leave space for the roots to stretch.

[0042] Nutrient solution cover: To prevent the nutrient solution from growing algae and bacteria due to direct sunlight, a cover that blocks sunlight needs to be added to the nutrient solution tank and placed around the outside of the planting pot.

[0043] Cultivation rack: The three-dimensional cultivation rack is set up in two layers, with a spacing of 2m between the layers. The lower layer adopts supplementary light measures with a supplementary light intensity of 100μmol / (m 2 ·s).

[0044] Auxiliary equipment and consumables: oxygen pump (one for each nutrient tank), several filters, lamps (one set for each nutrient tank, light intensity 100μmol / (m 2s); other supplies such as waterproof tape, cable ties, etc.

[0045] (2) Transplanting operation

[0046] Prepare the substrate and pot it: Mix the decomposed cake fertilizer evenly into the regular seedling substrate, then pot it. The substrate should be filled levelly and should not be over-compacted. After potting, gently place the planting pot on the planting bracket.

[0047] Filling nutrient solution: For the preparation of nutrient solution, refer to the requirements in the section “(3) Preparation of nutrient solution” below. The filling depth should be 3-4.5 cm above the bottom of the custom pot.

[0048] Deep planting: The tobacco seedlings are transplanted with the nutrient solution tank as the basic support and the tobacco seedling planting pot as the root support. The transplanting depth should be such that the base of the tobacco seedling stem is ≥3cm from the bottom of the pot.

[0049] Post-planting management: Before and after the clustering period, bibbing is also needed, that is, to supplement the substrate defects caused by natural settlement, and to bib until the planting pot is basically filled.

[0050] (3) Nutrient solution

[0051] Prepare the nutrient solution using Tables 1 and 2 above. The specific preparation method is as follows: After the mother solution is prepared, add 10ml of the iron salt mother solution and 10ml of the trace element mother solution per liter to the working solution. This nutrient solution uses a "high iron and sufficient boron" trace element nutrient management system, with an iron content of 0.5mM and a boron content of 11mg / L (as boric acid).

[0052] Table 1 Formula of macroelements and weight elements in nutrient solutions at different concentrations, mg / L

[0053] Table 2 Formula of iron salts and trace elements used in nutrient solution

[0054] After transplanting the tobacco seedlings, the nutrient solution usage and management methods for different growth stages of cigars are shown in Table 3 below.

[0055] Table 3 Nutrient solution usage and management methods for cigars at different growth stages

[0056] In Table 3 above, specifically:

[0057] (1) On the 21st day, when replenishing the nutrient solution, the nutrient solution in the nutrient solution tank before replenishment should be replenished based on the remaining 50% of the nutrients;

[0058] (2) On the 31st, 41st, and 51st day, the nutrient solution needs to be replenished once each time, and the amount of each replenishment should be based on the remaining 50% of the nutrients in the nutrient solution tank before replenishment;

[0059] (3) The nutrient solution was replenished once on the 61st day and the 71st day, and the amount of each replenishment was based on the remaining 50% of the nutrients in the nutrient solution tank before replenishment.

[0060] Before the cigar tobacco leaves mature: focus on nutrient management and couple water and fertilizer;

[0061] After the initial infusion, the amount of nutrient solution added in the later stage should be added in a manner to make up for the loss of the total amount of nutrient solution; observe frequently, and when the liquid level sinks more than 2 cm, the nutrient solution must be replenished in time, and the concentration should be designed according to the concentration of each growth stage.

[0062] After the cigar tobacco leaves mature (i.e. after topping or harvesting the lower leaves): focus on water management and terminate nutrient supply in a timely manner; terminate nutrient supply in a timely manner according to the tobacco leaf opening situation and overall quality to promote timely and full maturity of the middle and upper leaves.

[0063] (4) Control of cultivation environment factors within the production facility system

[0064] Temperature and Humidity Control: The space requirements for production facilities should be determined based on the number of wrapper planting layers and plant height. The temperature should be maintained at 25±5°C and the humidity at 80%±10%. Maintain the ambient temperature around 25°C. If the temperature exceeds 35°C or the humidity exceeds 85%, ventilation and window opening should be used to reduce humidity and dehumidify the environment.

[0065] Light intensity control: The light intensity in the interior space of the production facility system is 75-160μmol / (m 2 s) (This range refers to the change in light intensity within the facility from naturally cloudy to naturally sunny days);

[0066] Pest and disease control: Use insect nets first. In principle, avoid pesticides if root and stem diseases are not present. Recommended pesticides include spraying a 1000-fold dilution of Methoxazolidinone (for underground pests) and a 500-fold dilution of Bolike, Metalaxyl, or Thiophanate-methyl (for root and stem diseases).

[0067] Tobacco plant stability guarantee: Tobacco plant stems are fixed with a single line for each plant or double lines for a single row.

[0068] (5) Topping, leaving leaves, and harvesting when mature

[0069] Topping and leaving leaves: Based on the growth of tobacco plants, when the number of leaves reaches the expected number of 19 leaves, you can decisively top the plants and apply a general tobacco bud inhibitor.

[0070] Harvesting at maturity: Start harvesting the lower leaves (including the foot leaves with economic value) 70 days after transplanting, and the interval between subsequent harvests should be 12 days.

[0071] 3. Drying of wrapper tobacco leaves

[0072] Harvesting is carried out according to the harvesting maturity standards of the cigar wrapper. After harvesting, the tobacco leaves are hung in the drying area of ​​the production facility system, or directly under the folding cantilever (i.e., tobacco drying rack) on the three-dimensional cultivation rack, and dried according to the current technical regulations for drying the cigar wrapper.

[0073] 4. Wrapper tobacco leaf fermentation

[0074] After air-drying, the tobacco leaves are placed in a fermentation room and fermented according to current wrapper fermentation procedures. This fermentation area utilizes the space left after air-drying, using a flexible roll-up reinforced film structure to create a fermentation room for wrapper fermentation.

[0075] Example 2

[0076] The high-yield integrated production method for eggplant wrappers provided in this embodiment differs from that in Example 1 only in the formula of the culture solution and the supplementary light measures. The formula of the major and medium elements in the nutrient solution of this embodiment is the same as that in Example 1, but the iron content is 0.3 mM as Fe, and the boron content is 13.0 mg / L as boric acid. Specifically, the ferrous sulfate heptahydrate used is 83.4 mg / L, the disodium ethylenediaminetetraacetic acid dihydrate is 111.7 mg / L, and the boron content is 13.0 mg / L as boric acid. The lower layer is all heated at a light intensity of 50 μmol / (m 2 Other nutrient solution components, dosages, and process management measures were the same as in Example 1.

[0077] Example 3

[0078] The high-yield integrated production method for eggplant wrappers provided in this embodiment differs from that in Example 1 only in the formula of the culture medium, the number of transplanting and planting layers, the supplementary lighting measures, and the number of planting seasons. The iron content in the nutrient solution of this embodiment is 0.7 mM as Fe, and the boron content is 9.5 mg / L as boric acid. Specifically, the ferrous sulfate heptahydrate used is 194.6 mg / L, the disodium ethylenediaminetetraacetic acid dihydrate is 260.57 mg / L, and the boron content is 9.5 mg / L as boric acid. The three-layer transplanting and planting is carried out, and the two lower layers are both subjected to a light intensity of 150 μmol / (m 2 s) implement supplementary lighting; plant for three seasons, i.e., transplanting in mid-February in the first season and harvesting in mid-June; transplanting in mid-June in the second season and harvesting in mid-October; and transplanting in mid-October in the third season and harvesting in mid-February of the following year. Other nutrient solution components, dosages, and process management measures are the same as those in Example 1.

[0079] Example 4

[0080] The only difference between the aubergine wrapper production method provided in this comparative example and that in Example 1 lies in the aubergine wrapper variety and the matching cultivation rack layer spacing and planting specifications. The aubergine wrapper variety in this example is CX-12, and the cultivation rack layer spacing is 2.2m and the planting row spacing is 1.2m, which are matched with the growth and development characteristics of this variety. Other supporting facilities and equipment and process management measures such as nutrient solution and lighting are the same as those in Example 1.

[0081] Comparative Example 1

[0082] The eggplant wrapper production method provided in this comparative example differs only from that in Example 1 in the culture medium formulation. The nutrient solution in this example uses the iron and boron concentrations recommended by traditional classic formulas: 0.1 mM iron (Fe) and 2.86 mg / L boric acid. Specifically, the nutrient solution contains 27.8 mg / L ferrous sulfate heptahydrate, 37.2 mg / L disodium EDTA dihydrate, and 2.86 mg / L boric acid. The remaining nutrient solution component amounts and process management procedures are the same as in Example 1.

[0083] Comparative Example 2

[0084] The only difference between the eggplant wrapper production method provided in this comparative example and that in Example 1 is the nutrient solution supply method. In this example, the nutrient solution supply method is drip irrigation, that is, the prepared nutrient solution is drip-irrigated to 3.5 cm from the base of the stem using a drip irrigation tape; drip irrigation is performed at a rate of 150 mL / plant every morning for the first 30 days, and after 30 days, drip irrigation is performed once a day in the morning and afternoon at a rate of 150 mL / plant (i.e., a total drip irrigation volume of 300 mL / plant per day). The nutrient solution concentration, facilities and equipment, and other process management measures at each stage are the same as those in Example 1.

[0085] Comparative Example 3

[0086] The wrapper production method provided in this comparative example adopts the traditional wrapper cultivation method (i.e., the technical content of cigar cultivation in Chapter 20, Section 5 of "Chinese Tobacco Cultivation" (edited by the Tobacco Research Institute of the Chinese Academy of Agricultural Sciences, November 2005)). The wrapper variety is CX-26, and the method comprises the following steps:

[0087] S1. Production facility requirements: Conventional greenhouse seedling cultivation, conventional open field transplanting, and field planting and harvesting according to traditional production management methods.

[0088] S2. Complete the drying of the wrapper tobacco leaves in the traditional way.

[0089] S3. Complete the fermentation of the wrapper tobacco leaves in the traditional way.

[0090] S4. Implement single-season planting in the traditional way.

[0091] Test example: Quality evaluation of wrapper tobacco leaves

[0092] The wrapper tobacco leaves obtained in the Examples and Comparative Examples were investigated for quality evaluation, field disease incidence, and wrapper yield. Quality indicators included leaf thickness, vein thickness, oil content, leaf flatness, and color uniformity, while disease indicators included target spot, anthracnose, and average purchase price. The evaluation results are shown in Table 4 below.

[0093] Table 4. Wrapper quality, disease incidence, yield and average price

[0094] Note: The grading and pricing operations for inspecting the wrapper yield and average price are carried out in accordance with the Hubei Provincial Local Standard "Cigar Tobacco Leaf Grade Quality Specification" DB 42 / T 1549-2020.

[0095] As shown in Table 4, by comparing the indicators of the examples and comparative examples, it can be found that the new production methods provided by Examples 1-4 of the present invention significantly outperform the traditional production method (Comparative Example 3) in terms of wrapper thickness and leaf flatness, and the incidence of common diseases such as black shank, anthrax, and target spot is significantly reduced; the wrapper yield and average price are significantly improved. Overall, the wrapper tobacco leaves of the examples are well-matured, have sufficient oil content, are thin, have fine and straight veins, and are uniform in color. In addition, sensory quality evaluations show that the examples have a distinct cigar aroma style, with no noticeable odor or foreign smell, moderate strength, a comfortable aftertaste, good burning properties, and overall quality significantly superior to traditional production methods. Moreover, compared to traditional production methods, this production method can save more than 50% of land, reduce the investment in cigar production facilities by more than 40%, and reduce labor by more than 20%.

[0096] Comparative Examples 1 and 2 changed the formula of the nutrient solution (especially iron and boron) and the supply method, resulting in a significant decrease in the eggplant skin yield and a significant drop in the average price.

[0097] The above specific embodiments describe the implementation of the present invention in detail, but the present invention is not limited to the specific details of the above embodiments. Within the scope of the claims and technical concept of the present invention, various simple modifications and changes can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

Claims

1. A high-yield integrated production method for cigar wrappers, characterized in that: include: Build a "four-in-one" production facility system that integrates the processes of cigar wrapper tobacco seedling cultivation, transplanting, drying and fermentation. The light intensity in the production facility system is 75-160μmol / (㎡·s), the temperature is 25±5℃, and the relative air humidity is 75%±10%; When transplanting tobacco seedlings, nutrient solution is used for perfusion treatment, wherein the nutrient solution is a high-iron and boron-sufficient nutrient solution, wherein the iron content is 0.3-0.7 mM in terms of Fe, and the boron content is 9.5-13.0 mg / L in terms of boric acid; The transplanting and planting of cigar wrapper tobacco leaves occupies the main space within the production facility system, while seedling cultivation, air-drying and fermentation jointly occupy the remaining space within the production facility system; with a cigar growing season of 110-140 days, two or three seasons of intercropping are implemented each year.

2. The high-yield integrated production method for citrus wrappers according to claim 1, characterized in that: 90% of the space in the production facility system is used for transplanting and planting wrapper tobacco leaves, and 10% is used for seedling raising, drying and fermentation of wrapper tobacco leaves.

3. The high-yield integrated production method for citrus wrappers according to claim 1, characterized in that: The nutrient solution is prepared by dissolving a large and medium element reagent in water, and then adding an iron salt mother solution and a trace element mother solution; In the nutrient solution, the large and medium elements provided include 272 mg / L of calcium nitrate tetrahydrate, 404 mg / L of potassium nitrate, 109 mg / L of potassium dihydrogen phosphate, 61 mg / L of triammonium phosphate and 246 mg / L of magnesium sulfate, based on a pure N mass concentration of 0.01%; The iron supply in the nutrient solution includes 83.40-194.60 mg / L of ferrous sulfate heptahydrate and 111.65-260.55 mg / L of chelating agent disodium ethylenediaminetetraacetate dihydrate, based on the molar concentration of pure Fe of 0.3-0.7 mM; the trace elements supply in the nutrient solution includes 0.83 mg / L of potassium iodide, 9.5-13.0 mg / L of boric acid, 22.3 mg / L of manganese sulfate tetrahydrate, 8.6 mg / L of zinc sulfate heptahydrate, 0.25 mg / L of sodium molybdate dihydrate, 0.025 mg / L of copper sulfate pentahydrate and 0.025 mg / L of cobalt chloride hexahydrate.

4. The high-yield integrated production method for citrus wrappers according to claim 2, characterized in that: The method of using the nutrient solution is: During the 1st to 20th day of the transplanting and planting process, the concentration of the nutrient solution is 0.03%, and the total dosage is 3-5 L / plant; At 21-30 days during the transplanting and planting process, the concentration of the nutrient solution is 0.045%, and the total dosage is 5-7 L / plant; and the supplementary amount at the 21st day is based on the remaining 50% of the nutrients in the nutrient solution in the nutrient solution tank before supplementation; During the 31st to 60th day of the transplanting and planting process, the concentration of the nutrient solution is 0.06%, and the total dosage is 7-10 L / plant; The nutrient solution is replenished once on the 31st, 41st and 51st days, and the amount of each replenishment is based on the remaining 50% of the nutrients in the nutrient solution in the nutrient solution tank before replenishment; Starting from the 61st day of the transplanting and planting process, the concentration of the nutrient solution is 0.045%, and the total dosage is 7-10L / plant; and the nutrient solution is replenished once on the 61st and 71st days, and the amount of each replenishment is based on the remaining 50% of the nutrients in the nutrient solution in the nutrient solution tank before replenishment.

5. The high-yield integrated production method for citrus wrappers according to claim 1, characterized in that: 10-15 days after the wrapper tobacco leaves are toppled, the nutrient solution is replaced with clean water to cut off the nutrient supply; during harvesting, the interval between two adjacent harvests is 12-18 days.

6. The high-yield integrated production method for citrus wrappers according to claim 1, characterized in that: The transplanting and planting adopts 2-3 layers of cultivation racks for transplanting and planting wrapper tobacco leaves, and the spacing between the cultivation rack layers is ≥2m; each layer of the cultivation rack except the top layer adopts supplementary light measures, and the supplementary light intensity is 50-150μmol / (m 2 ·s).

7. The high-yield integrated production method for citrus wrappers according to claim 1, characterized in that: The seedlings of wrapper tobacco are raised by rolling intercropping in a 50-day cycle. When three-season intercropping is adopted, the second season seedlings are sown 50 days before the end of the first season tobacco harvest, and the third season seedlings are sown 50 days before the end of the second season tobacco harvest.

8. The high-yield integrated production method for citrus wrappers according to claim 1, characterized in that: The wrapper tobacco leaves are dried on the foldable drying racks in the drying area; the last season of tobacco leaves each year are dried on the foldable drying racks or on the cultivation racks.

9. The high-yield integrated production method for citrus wrappers according to claim 1, characterized in that: The fermentation of the wrapper tobacco leaves is completed in a detachable fermentation room built with roll-up film in the area left after the drying.

Images