A light-supplementing method for three-dimensional multi-layer cultivation of wrapper tobacco leaves

Abstract

The present invention discloses a light-supplementing method for three-dimensional multi-layer cultivation of cigar wrapper tobacco leaves, and belongs to the technical field of tobacco cultivation. The light-supplementing method comprises the following steps: providing a multi-layer three-dimensional facility and a light-supplementing system, wherein the light-supplementing system is arranged in the multi-layer three-dimensional facility, and the multi-layer three-dimensional facility further comprises a cultivation rack, and the cultivation rack has at least two layers; when the cultivation rack has two layers, in the cultivation of cigar wrapper, the light intensity and / or light quality of the light-supplementing system are respectively set, and the light intensity ranges from 10-22 μmol·m ‑2 ·s ‑1 The light quality is obtained by combining at least two of red light, blue light, green light and yellow light. The invention significantly improves the output rate of cigar wrappers and the quality of tobacco leaves through precise light supplementation, and increases the space utilization rate of multi-layer three-dimensional facilities by more than 100%.

Description

Technical Field

[0001] The invention belongs to the technical field of tobacco cultivation, and in particular relates to a light supplement method for three-dimensional multi-layer cultivation of wrapper tobacco leaves. Background Art

[0002] In recent years, the Chinese cigar market has grown rapidly, especially in the past five years, with an average annual growth rate of more than 40% and sales growth of more than 30%. The development of cigars has become a new economic growth point in the tobacco industry. Raw materials are the cornerstone of industrial development; cigar raw materials are composed of three major parts: cigar wrapper, cigar wrapper, and cigar core. Among them, the cigar wrapper has the highest quality requirements and the greatest economic value. Due to the late start of domestic cigar raw material technology research and development, most of the raw materials for domestic cigars rely on imports, especially cigar wrapper raw materials. High-quality cigar wrapper requires the quality of tobacco leaves to be thin and complete, with thin and non-protruding veins, strong tensile strength, uniform color, no spots or holes, good combustion and no impurities. Higher quality requirements are bound to have higher requirements for ecological suitability layout and production technology matching.

[0003] At present, there has been no targeted system technology for the production of cigar wrapper tobacco raw materials in the current traditional production technology in China, and the large-scale production of cigar wrappers is even more blank. The supply of cigar wrappers is actually mainly passively selected from the mixed raw materials of cigar wrappers, wrappers, and cigar cores produced by the same tobacco plant in extensive production, resulting in low cigar wrapper output and uneven quality. Therefore, how to produce high-quality cigar wrapper tobacco in my country and effectively change the passive situation of industrial enterprises importing a large amount of raw materials is a prominent problem facing the development of China's cigar industry.

[0004] The use of infrastructure such as greenhouses and sheds can easily create and control a growth environment suitable for the growth and development of cigar wrappers. Based on the economic value advantage of cigar wrappers, facility cultivation may become an important development method for the cigar wrapper industry; and in order to improve the utilization efficiency of facility space, multi-layer cultivation is often considered, which will lead to relatively insufficient light for the tobacco plants in the layers below the top layer, resulting in poor overall quality of cigar wrapper tobacco leaves and a significant decrease in cigar wrapper output. Summary of the invention

[0005] The purpose of the present invention is to provide a light supplement method for three-dimensional multi-layer cultivation of wrapper tobacco leaves, which is used to solve the problems of poor overall quality of wrapper tobacco leaves and significantly reduced wrapper output rate due to relatively insufficient light in the layers of tobacco plants below the top layer in the existing multi-layer cultivation mode.

[0006] In order to solve the above technical problems, the present invention provides a light-supplementing method for three-dimensional multi-layer cultivation of wrapper tobacco leaves, comprising the following steps: providing a multi-layer three-dimensional facility and a light-supplementing system, wherein the light-supplementing system is arranged in the multi-layer three-dimensional facility, and the multi-layer three-dimensional facility also includes a cultivation rack, and the cultivation rack has at least two layers; when the cultivation rack has two layers, in the cultivation of the wrapper, the light intensity and / or light quality of the light-supplementing system are respectively set; the light intensity ranges from 10 to 22 μmol·m -2 ·s -1 ; The light quality is obtained by combining at least two of the red light, blue light, green light and yellow light.

[0007] In the supplemental lighting method provided by the present invention, light intensity and light quality can be used separately or in combination. For example, only the light intensity in the supplemental lighting system can be set, or only the light quality in the supplemental lighting system can be set, or both the light intensity and light quality in the supplemental lighting system can be set at the same time. Preferably, when both the light intensity and light quality in the supplemental lighting system are set at the same time, it is beneficial to improve the citrus peel yield.

[0008] In some embodiments, the light intensity includes a first light intensity, a second light intensity, and a third light intensity; the first light intensity ranges from 10-14 μmol·m -2 ·s -1 (For example, it can be 10 μmol·m -2 ·s -1 , 11 μmol·m -2 ·s -1 , 12 μmol·m -2 ·s -1 , 13 μmol·m -2 ·s -1 , 14 μmol·m -2 ·s -1 or other values ​​within this range), the second light intensity range is 14-18 μmol·m -2 ·s -1 (For example, it can be 14 μmol·m -2 ·s -1 , 15 μmol·m -2 ·s -1 , 16 μmol·m -2 ·s -1 , 17 μmol·m -2 ·s -1 , 18 μmol·m -2 ·s -1 or other values ​​within this range), the third light intensity range is 18-22 μmol·m -2 ·s -1 (For example, it can be 18 μmol·m -2 ·s -1, 19 μmol·m -2 ·s -1 , 20 μmol·m -2 ·s -1 , 21 μmol·m -2 ·s -1 , 22 μmol·m -2 ·s -1 or other values ​​within this range).

[0009] In some embodiments, the light quality includes a first light quality, a second light quality, and a third light quality; the first light quality is 45%-65% (for example, it can be 45%, 55%, 60%, 65% or other values ​​within the range) blue light + 35%-55% (for example, it can be 35%, 45%, 50%, 55% or other values ​​within the range) red light, and the second light quality is 50%-70% (for example, it can be 50%, 55%, 60%, 65%, 70% or other values ​​within the range) blue light + 20%-40% (for example, it can be 20%, 25%, 30%, 35%, 40% or other values ​​within the range) other values) red light + 5%-15% (for example, it can be 5%, 10%, 15% or other values ​​within this range) green light, the third light quality is 25%-40% (for example, it can be 25%, 30%, 35%, 40% or other values ​​within this range) blue light + 25%-35% (for example, it can be 25%, 30%, 35% or other values ​​within this range) red light + 20%-35% (for example, it can be 20%, 25%, 30%, 35% or other values ​​within this range) green light + 5%-15% (for example, it can be 5%, 10%, 15% or other values ​​within this range) yellow light.

[0010] In some embodiments, cigar wrapper cultivation includes a clustering stage (initial transplanting - 30th day after transplanting), a vigorous growth stage (30th day after transplanting - 55th day after transplanting) and a mature stage (55th day after transplanting - 110th day after transplanting); in the clustering stage, the light intensity is the first light intensity, and the light quality is the first light quality; in the vigorous growth stage, the light intensity is the third light intensity, and the light quality is the second light quality; in the mature stage, the light intensity is the second light intensity, and the light quality is the third light quality.

[0011] In the present invention, the inventors have found that light, as a plant growth factor, will lead to more dry matter accumulation, thickened leaves and thickened veins if it is supplied too much (i.e., the light intensity is too high), while weak light supply (i.e., low light intensity) will lead to too thin leaves, low oil content in tobacco leaves, tight leaves, and low industrial availability; the inventors have further found that different light quality supplements or different color film coverings can affect the growth and development of flue-cured tobacco and the formation of quality. Therefore, the inventors studied the growth law of cigar wrapper cultivation and obtained the optimal light intensity and light quality for the clustering stage, vigorous growth stage, and mature stage of cigar wrapper cultivation. By using specific light intensity and light quality for supplementary light in the clustering stage, vigorous growth stage, and mature stage of cigar wrapper cultivation, it is beneficial to significantly improve the cigar wrapper output rate.

[0012] In some embodiments, when the cultivation rack has more than two layers, the light intensity is increased by 15%-50% with each additional layer, for example, it can be 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50% or other values ​​within this range.

[0013] It should be noted that the corresponding enhancement of light intensity can also be adaptively adjusted according to the variety characteristics of the cigar wrapper.

[0014] In some embodiments, the light source in the supplemental light system is selected from one or more of a light strip having an LED light source, a light tube having an LED light source, an alloy tungsten lamp, or an alloy sodium lamp.

[0015] In the present invention, the space occupied by the supplementary light system is not particularly limited, and the layout can be flexible according to local conditions. In addition, the above light sources can be used alone or in combination, and other light sources in the prior art can also be used, as long as they can meet the light intensity and light quality required by the present invention.

[0016] In some embodiments, the illumination distance of the supplemental lighting system is 25cm-35cm, for example, it can be 25cm, 27cm, 29cm, 31cm, 33cm, 35cm or other values ​​within the range; the diurnal cycle of the supplemental lighting includes: 12h-16h during the day, for example, it can be 12h, 13h, 14h, 15h, 16h or other values ​​within the range; 8h-12h at night, for example, it can be 8h, 9h, 10h, 11h, 12h or other values ​​within the range.

[0017] In some embodiments, the interlayer spacing of the cultivation racks is 1.6 m-2.4 m, for example, 1.6 m, 1.8 m, 2 m, 2.2 m, 2.4 m or other values ​​within this range.

[0018] In the present invention, the interlayer spacing can also be adaptively adjusted according to the specific variety of the wrapper.

[0019] In some embodiments, in a multi-story three-dimensional facility, the controlled temperature is 20°C-30°C, for example, 20°C, 22°C, 24°C, 26°C, 28°C, 30°C or other values ​​within this range; the relative air humidity is 65%-85%, for example, 65%, 70%, 75%, 80%, 85% or other values ​​within this range.

[0020] In some embodiments, in the multi-layer three-dimensional facility, the system for cultivating the cigar wrapper is selected from one or more of a hydroponic system, a substrate culture system, a planting bag drip system, or a pipeline three-dimensional cultivation system.

[0021] In the present invention, in order to ensure the effect of wrapper cultivation and the convenience of operation, the multi-layer three-dimensional facility can be a sun greenhouse or a plastic steel greenhouse.

[0022] In some embodiments, the process of citrus wrapper cultivation also includes a step of pest and disease control.

[0023] In some preferred embodiments, pest control can use insect nets. When diseases occur in the rhizomes, pesticides can be applied. Specifically, it can be: spraying 1000 times of highly effective chlorfenapyr for site disinfection and prevention of underground pests; and / or spraying 500 times of bolixil and metalaxyl for the prevention and treatment of rhizomes; and / or spraying 2000 times of imidacloprid for the prevention and treatment of tobacco aphids.

[0024] The beneficial effects of the present invention are as follows: Different from the prior art, the present invention adopts specific light intensity and light quality for precise light supplement during the clumping period, vigorous growth period and mature period of cigar wrapper cultivation, thereby significantly improving the cigar wrapper output rate and the quality of tobacco leaves, and increasing the space utilization rate of multi-layer three-dimensional facilities by more than 100%, thereby significantly improving the comprehensive quality of cigar wrapper tobacco leaves. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Unless otherwise specified in the following examples and comparative examples, the transplanting and planting process of cigar tobacco plants is carried out using conventional tobacco cultivation techniques, and specific reference may be made to the technical content of cigar tobacco cultivation in Section 5 of Chapter 20 of "Chinese Tobacco Cultivation" (Edited by the Tobacco Research Institute of the Chinese Academy of Agricultural Sciences, November 2005). Other experimental methods in the examples and comparative examples that do not specify specific conditions are usually carried out according to conventional conditions and conditions described in the manual, or according to conditions recommended by the manufacturer, and the general equipment, materials, reagents, etc. used, unless otherwise specified, can all be obtained from commercial channels.

[0027] Furthermore, the terms “first”, “second”, and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0028] Example 1

[0029] The lighting supplement method for cigar wrapper cultivation provided in this embodiment is a cigar wrapper tobacco planting experiment conducted in a greenhouse in Enshi, Hubei Province in 2023. The cigar wrapper variety is CX-26, and the cultivation system adopts a two-layer three-dimensional nutrient solution culture system.

[0030] The production facility planting system includes a two-layer three-dimensional cultivation rack, a nutrient solution tank, a planting pot, a culture matrix, a nutrient solution, and ancillary accessories;

[0031] The seedling raising, transplanting, and harvesting process and requirements of the cigar tobacco in this experiment are as follows:

[0032] 1. Seedling cultivation

[0033] According to the conventional tobacco floating technical specifications, when the seedlings are about 55 days old, the quality of the seedlings reaches a stem height of 9-12cm, a straight stem ≥5mm, 4-6 functional leaves (true leaves), a well-developed root system, and a strong and uniform growth group.

[0034] 2. Transplanting

[0035] (1) Basic equipment and material requirements

[0036] Cultivation mode: A two-layer steel frame three-dimensional nutrient solution cultivation mode is adopted, with a layer spacing of 2.0m between the upper and lower layers.

[0037] Planting pot: PS material gardening planting pot, upper diameter 16cm, lower diameter 13cm, height 17.5cm, with multiple hollow circular holes with a diameter of 0.6±0.1cm at the bottom.

[0038] Culture substrate: current general peat-type substrate (a mixture of peat, perlite and vermiculite, 0.7kg / pot on a dry basis), decomposed cake fertilizer (prepared at 0.07kg / plant on a dry basis). Water the substrate appropriately to moisten it and mix it in the pot, then put it in the pot to reach 1kg / pot (including the weight of the pot).

[0039] Nutrient solution tank: Extruded board is used as the basic support of the nutrient solution tank. The clear dimensions in the tank are 17cm deep and 20cm wide. The net length of a single tank is 4.5m. The spacing between plantings is 45cm and the row spacing (i.e. the longitudinal center wheelbase of adjacent nutrient solution tanks) is 1.0m, that is, 10 cigar tobacco plants are planted in each tank. An anti-seepage film is laid in the nutrient solution tank, and a 4cm wide and 6cm high foam strip or wooden square is placed under the film to support the planting pot and leave space for the roots to stretch. In addition, each nutrient solution tank is equipped with basic accessories such as an air pump and a pump-end filter net bag for circulating and sucking the nutrient solution.

[0040] Nutrient solution cover: To prevent the nutrient solution from growing algae and bacteria due to direct sunlight, a sunlight-blocking cover needs to be added to the nutrient solution tank and placed around the outside of the planting pot.

[0041] Basic conditions of the greenhouse: clearance height of 4.5m, single span size of 8m*45m, the top of the greenhouse is a solid sun panel made of FRP material (2mm thick), with an inner shading net, an outer shading net and a spare cooling water curtain system, and an electric fan to ensure air circulation and PS material shed film that can be rolled up for ventilation on all sides.

[0042] (2) Transplantation operation

[0043] 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.

[0044] Pour the nutrient solution: the pouring depth should be 3-4.5cm above the bottom of the custom pot.

[0045] Deep planting: When transplanting tobacco seedlings, the tobacco seedling planting pot is used as the root support, and the transplanting depth should be such that the center of the tobacco seedling leaves is basically flush with the upper surface of the culture medium.

[0046] Post-planting management: Before and after the clumping stage, bibbing is needed to supplement the substrate defects at the base of the stem caused by natural settlement. It is best to bib until the base of the stem is basically covered.

[0047] (3) Preparation and application of nutrient solution

[0048] The large and medium elements required for the growth of eggplant skin are prepared and applied according to Table 1. Pay attention to the liquid level. The nutrient solution is replenished every 6-10 days. The concentration of the supplemented nutrient solution is consistent with the nutrient solution concentration requirements of the operation stage, and it is replenished to the original liquid level; on the 81st day after transplanting, the nutrient solution is emptied and replaced with an equal amount of clean water, and then clean water is replenished every 6-10 days, and it is also replenished to the original liquid level. The iron salt mother solution and trace element mother solution are prepared according to Table 2. 0-20 days after transplanting, add 2.5mL of iron salt mother solution and 5mL of trace element mother solution per liter of working solution, and apply them simultaneously with the large and medium elements; 21-60 days after transplanting, add 7.5mL of iron salt mother solution and 15mL of trace element mother solution per liter of working solution, and apply them simultaneously with the large and medium elements; 61-80 days after transplanting, add 5mL of iron salt mother solution and 10mL of trace element mother solution per liter of working solution, and apply them simultaneously with the large and medium elements.

[0049] Table 1 Formula of major and medium elements in the nutrient solution at different growth stages of eggplant skin

[0050]

[0051] Table 2 Formula of iron salts and trace elements used in nutrient solution

[0052]

[0053] (4) Lighting control

[0054] Based on the two-layer three-dimensional facility cultivation mode of this embodiment, an LED light strip light source supplementary lighting system is built on the lower layer. The light intensity and light quality of the light source system before installation need to be adjusted to meet the following control requirements and implement supplementary lighting operations: the light intensity during the clustering period (initial transplanting-30 days after transplanting), the vigorous growth period (31 days after transplanting-55 days after transplanting) and the mature period (55 days after transplanting-110 days after transplanting (i.e. harvesting is completed)) of the wrapper tobacco leaves is 12 μmol·m -2 ·s -1 , 20 μmol·m -2 ·s -1 and 16 μmol·m -2 ·s -1, and the light quality composition in the three periods of clustering, vigorous growth and maturity is set to B+R (i.e. 50% blue light + 50% red light), B+R+G (i.e. 60% blue light + 30% red light + 10% green light), B+R+G+Y (i.e. 30% blue light + 30% red light + 30% green light + 10% yellow light), and supplementary light is provided according to such light intensity and light quality combination. Each light source light strip is horizontally installed directly above the tobacco plant, and the light strip is parallel to the direction of the tobacco plant, with a lighting distance of 30cm, that is, the hanging height of the lamp will be dynamically adjusted with the growth of the tobacco plant. The diurnal cycle of supplementary light is 12h during the day and 12h at night. The power supply control of the light source system adopts ZDE-4000 electrical control box, which contains a control circuit of 4000W power supply control high-power input, which can meet the requirements of air switch control of total power supply and timer control circuit.

[0055] (5) Control of cultivation environment factors within the production facility system

[0056] Temperature and humidity control: Maintain the air temperature in the facility at 25±5℃ and the relative humidity at 75%±10%; when the air temperature in the facility exceeds 35℃ and the relative humidity exceeds 85%, timely use ventilation and window opening to achieve cooling and dehumidification.

[0057] Pest and disease control: give priority to the use of insect-proof nets. In principle, no pesticides will be applied unless there are root and rhizome diseases. The main pesticides used in the process are spraying 1000 times diluted high-efficiency chlorflucythrinate for site disinfection and prevention of underground pests, spraying 500 times diluted bolikat and metalaxyl to prevent and control root and rhizome diseases, and using 2000 times diluted imidacloprid to control tobacco aphids.

[0058] Tobacco plant stability guarantee: The tobacco plant stems are fixed with a single line for each plant or double lines for a single row.

[0059] (6) Topping, leaving leaves, and harvesting when mature

[0060] Topping and retaining leaves: Topping should be done during the initial flowering period, and 19 effective leaves should be retained. Apply a general tobacco bud inhibitor on the same day after topping.

[0061] Harvesting at maturity: Start harvesting the lower leaves (containing the foot leaves with economic value) on the 65th day after transplanting. The interval between two subsequent harvests is 12-18 days, that is, the five harvests are separated by 12 days, 14 days, 16 days, and 18 days respectively.

[0062] Comparative Example 1

[0063] The light supplement method for cigar wrapper cultivation provided in this comparative example is basically the same as that in Example 1, except that no light supplement is performed, and other management measures are the same as those in Example 1.

[0064] Comparative Example 2

[0065] The light supplement method for cigar peel cultivation provided in this comparative example is basically the same as that in Example 1, except that agricultural general sodium lamps are used for light supplement during the clustering stage, the vigorous growth stage and the ripening stage, and the light supplement intensity is always 20 μmol·m -2 ·s -1 , other management measures are the same as those in Example 1.

[0066] Comparative Example 3

[0067] The light supplementation method for cigar peel cultivation provided in this comparative example is basically the same as that in Example 1, except that the light quality is B+R (i.e. 50% blue light + 50% red light) during the clustering stage, the vigorous growth stage and the ripening stage, and the light supplementation intensity is always 12 μmol·m -2 ·s -1 , other management measures are the same as those in Example 1.

[0068] Comparative Example 4

[0069] The light supplementation method for cigar peel cultivation provided in this comparative example is basically the same as that in Example 1, except that the light quality in the clustering stage, the vigorous growth stage and the mature stage is B+R+G (i.e. 60% blue light + 30% red light + 10% green light), and the light supplementation intensity is always 20 μmol·m -2 ·s -1 , other management measures are the same as those in Example 1.

[0070] Comparative Example 5

[0071] The light supplementation method for aubergine peel cultivation provided in this comparative example is basically the same as that in Example 1, except that the light quality in the clustering stage, the vigorous growth stage and the mature stage is B+R+G+Y (i.e. 30% blue light + 30% red light + 30% green light + 10% yellow light), and the light supplementation intensity is always 16 μmol·m -2 ·s -1 , other management measures are the same as those in Example 1.

[0072] Wrapper Performance Test

[0073] The wrapper yield and appearance quality were tested according to the method specified in Hubei Provincial Standard "Cigar Tobacco Grade Quality Specification" DB 42 / T 1549-2023; the tobacco leaf tensile strength was measured using an M250-2.5 CT tensile testing machine (produced by KARL, Germany), and the test objects were all tobacco leaves grown in the lower layer with supplementary light. The results are shown in Table 3 below:

[0074] Table 3 Wrapper yield and key quality performance results

[0075]

[0076] As can be seen from Table 3, by comparing the evaluation indicators of the embodiments and the comparative examples, it can be found that the citrus peel output rate and key quality indicators of the precise lighting method for improving the citrus peel output rate in facility cultivation provided in Example 1 of the present invention are significantly better than those of the traditional production method (Comparative Examples 1-2). In Example 1, the cigar wrapper output rate reaches 63.46%, the cigar wrapper tobacco leaf veins are "thin", the oil content is "high", the leaf surface is "flat", the color uniformity is "uniform", and the tobacco leaf tension reaches 1.215N; compared with the comparative example 2 without supplementary lighting, the cigar wrapper output rate is increased by more than 41%, the tobacco leaf tension is increased by 31%, and the overall quality of the tobacco leaves is significantly improved; compared with the agricultural general sodium lamp supplementary lighting in the comparative example 1, the cigar wrapper output rate is increased by more than 28%, the tobacco leaf tension is increased by 21%, and the overall quality of the tobacco leaves is also significantly improved; other comparative examples with single light quality or constant light intensity can also improve the cigar wrapper output rate to a certain extent, but the comprehensive improvement effect is significantly weaker than that of Example 1; in addition, due to the lighting guarantee of the supplementary lighting measures, three-dimensional planting of more than two layers can be fully realized, that is, the space utilization rate of the facility can be increased by more than 100%.

[0077] It should be noted that the above embodiments all belong to the same inventive concept, and the description of each embodiment has its own focus. For matters that are not described in detail in some embodiments, reference may be made to the description in other embodiments.

[0078] The above-mentioned embodiments only express the implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A light supplement method for three-dimensional multi-layer cultivation of wrapper tobacco leaves, characterized in that: The steps include: A multi-layer three-dimensional facility and a supplementary light system are provided, wherein the supplementary light system is arranged in the multi-layer three-dimensional facility, and the multi-layer three-dimensional facility further comprises a cultivation rack, and the cultivation rack has at least two layers; When the cultivation rack has two layers, during the cultivation of citrus wrappers, the light intensity and / or light quality of the supplementary light system are set respectively; The light intensity range is 10-22 μmol·m -2 ·s -1 ; The light quality is obtained by compounding at least two of red light, blue light, green light and yellow light; The light intensity includes a first light intensity, a second light intensity and a third light intensity; The first light intensity ranges from 10-14 μmol·m -2 ·s -1 The second light intensity ranges from 14 to 18 μmol·m -2 ·s -1 The third light intensity ranges from 18 to 22 μmol·m -2 ·s -1 ; The cigar wrapper cultivation includes the clustering stage, the vigorous growth stage and the mature stage; In the clustering stage, the light intensity is the first light intensity, in the vigorous growth stage, the light intensity is the third light intensity, and in the mature stage, the light intensity is the second light intensity; When the cultivation rack has more than two layers, the light intensity is increased by 15%-50% for each additional layer.

2. The light supplementation method for three-dimensional multi-layer cultivation of wrapper tobacco leaves according to claim 1, characterized in that: The light quality includes a first light quality, a second light quality and a third light quality; The first light quality is 45%-65% blue light + 35%-55% red light, the second light quality is 50%-70% blue light + 20%-40% red light + 5%-15% green light, and the third light quality is 25%-40% blue light + 25%-35% red light + 20%-35% green light + 5%-15% yellow light.

3. The light supplement method for three-dimensional multi-layer cultivation of wrapper tobacco leaves according to claim 2, characterized in that: During the cluster period, the light quality is the first light quality; During the growth period, the light quality is the second light quality; In the mature stage, the light quality is the third light quality.

4. The light supplement method for three-dimensional multi-layer cultivation of wrapper tobacco leaves according to any one of claims 1 to 3, characterized in that: The light source in the supplementary light system is selected from one or more of a light strip with an LED light source, a light tube with an LED light source, an alloy tungsten lamp or an alloy sodium lamp.

5. The light supplement method for three-dimensional multi-layer cultivation of wrapper tobacco leaves according to claim 4, characterized in that: The illumination distance of the fill light system is 25cm-35cm, and the diurnal cycle of the fill light includes: 12h-16h during the day and 8h-12h at night.

6. The light supplement method for three-dimensional multi-layer cultivation of wrapper tobacco leaves according to any one of claims 1 to 3, characterized in that: The layer spacing of the cultivation rack is 1.6m-2.4m.

7. The light supplement method for three-dimensional multi-layer cultivation of wrapper tobacco leaves according to any one of claims 1 to 3, characterized in that: In the multi-layer three-dimensional facility, the temperature is controlled at 20°C-30°C and the relative air humidity is 65%-85%.

8. The light supplement method for three-dimensional multi-layer cultivation of wrapper tobacco leaves according to any one of claims 1 to 3, characterized in that: In the multi-layer three-dimensional facility, the system for cultivating the citrus peel is selected from one or more of a hydroponic system, a substrate culture system, a planting bag drip irrigation system or a pipeline-type three-dimensional cultivation system.

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