Allium mongolicum regel cultivation method with LED as light supplementing source

Abstract

The invention discloses an allium mongolicum regel cultivation method with an LED as a light supplementing source, and belongs to the technical field of plant cultivation. The allium mongolicum regel cultivation method with the LED as the light supplementing light source comprises the following steps that after allium mongolicum regel is cut, light supplementing treatment is conducted on the allium mongolicum regel every day, and harvesting of the allium mongolicum regel is stopped after 30 days; then the allium mongolicum regel is cut, and then the steps are repeated; the light supplementing treatment comprises the steps that natural illumination is conducted in the daytime, and after no natural illumination exists at night, light supplementing is conducted for 5 h with an LED as a light source. The invention provides an efficient, energy-saving and accurate light supplementing scheme capable of promoting the growth of allium mongolicum regel and improving the quality of the allium mongolicum regel. The yield and quality of allium mongolicum regel are effectively improved by accurately controlling the light source, the illumination intensity, the red-blue light proportion in the light source and the light supplementing time.

Description

Technical Field

[0001] The invention belongs to the technical field of plant cultivation, and more specifically relates to a method for cultivating allium mongolicum using LED as a supplementary light source. Background Art

[0002] Allium mongolicum is a perennial herbaceous plant of the genus Allium in the Liliaceae family. It is a wild vegetable unique to the deserts, semi-desert grasslands and sandy lands in northwest China. It has both edible and medicinal value. It tastes fresh, spicy and refreshing when eaten. It can be used for salad dressing, stir-frying, pickling, etc., enriching the table dishes. In terms of medicinal value, it has the effects of appetizing, digesting food, and killing insects. It is rich in various vitamins, minerals and dietary fiber. It is a natural and healthy food ingredient favored by consumers, and the market demand is on the rise.

[0003] As the market demand for Allium mongolicum increases, traditional wild collection is unable to meet the supply, and facility cultivation has emerged. Although facility cultivation can achieve year-round production by controlling the environment and ensure a stable market supply, the light problem has become a key factor restricting the growth of Allium mongolicum. The light intensity in the facility is weak, the time is short, and the light quality is uneven, which is significantly different from the strong light and long-day desert environment where Allium mongolicum is native. As a result, the growth and development of Allium mongolicum is hindered, the plants are thin and weak, the leaves are yellow, and the tillering is reduced, which seriously affects its yield and quality.

[0004] In the past, research on improving the quality, yield and growth indicators of sand onion has focused on soil improvement, fertilizer optimization and irrigation technology adjustment. For example, adding a specific proportion of organic fertilizer and sandy soil can improve soil permeability and fertility, promote root growth, and enhance plant robustness; rationally adjusting the proportion of fertilizer elements such as nitrogen, phosphorus and potassium can improve the stress resistance of sand onion, making the leaves thicker and greener. However, these studies have not been very effective in solving the core problem of insufficient light.

[0005] Moreover, high-pressure sodium lamps and fluorescent lamps were often used for supplementary lighting in the past, but both have many defects. High-pressure sodium lamps generate serious heat and consume high energy, which increases the cost of cooling the greenhouse, and the light quality ratio is difficult to accurately control; fluorescent lamps have low light efficiency and short life, and the cost of frequent lamp replacement is high. They also contain harmful substances such as mercury, which is not conducive to environmental protection.

[0006] Therefore, it is extremely urgent to develop other lighting supplementation methods for Allium mongolicum cultivation to improve the yield and quality of Allium mongolicum. Summary of the invention

[0007] The purpose of the present invention is to provide a method for cultivating mongolica using LED as a supplementary light source to solve the problems existing in the above-mentioned prior art, help explore a supplementary lighting strategy suitable for the growth of mongolica, improve the yield and quality of mongolica, promote the development of mongolica facility cultivation industry, achieve a win-win situation in ecological, economic and social benefits, and provide a model for light regulation in vegetable facility cultivation.

[0008] To achieve the above object, the present invention provides the following solutions:

[0009] One of the technical solutions of the present invention is to provide a method for cultivating allium mongolicum using LED as a supplementary light source, comprising the following steps:

[0010] After the Allium mongolicum is cut, the Allium mongolicum is supplemented with light every day until the Allium mongolicum is harvested again; then the Allium mongolicum is cut, and then the above steps are repeated;

[0011] The fill light treatment includes: providing natural light during the day, and providing fill light for 5 hours using LED as a light source when there is no natural light at night.

[0012] Preferably, the fill light time is from 6:30pm to 11:30pm.

[0013] In the present invention, the output ratio of red light to blue light in the light supplement process is preferably 6:4 to 9:1, and more preferably 7:3.

[0014] In the present invention, the light intensity of the supplementary light is preferably 100 to 300 μmol·m -2 ·s -1 , more preferably 200 μmol·m -2 ·s -1 .

[0015] Preferably, the method for cultivating allium mongolicum using LED as a supplementary light source also includes water and fertilizer management of the allium mongolicum.

[0016] Preferably, the water and fertilizer management includes watering management and fertilizer management; the watering management includes: watering (watering thoroughly) after each mowing, during the growth period after mowing the mongolica, watering every 10 to 15 days in summer (adjusted according to soil moisture conditions), and watering every 15 to 20 days in winter (adjusted according to soil moisture conditions); the fertilizer management includes: after mowing the mongolica 1 to 2 times, if there is a phenomenon of fertilizer and water deficiency such as slow growth and yellow leaves, topdressing should be carried out, and 8 to 12 kg of ammonium nitrate should be applied per mu.

[0017] Furthermore, the cultivation method of the Allium mongolicum includes but is not limited to greenhouse cultivation.

[0018] The second technical solution of the present invention provides a method for improving the yield and quality of allium mongolicum, comprising the following steps: cultivating allium mongolicum by adopting the above-mentioned allium mongolicum cultivation method using LED as a supplementary light source.

[0019] The technical principles of the present invention are as follows:

[0020] The present invention provides a highly efficient, energy-saving, and accurate supplementary lighting solution that can promote the growth and quality of allium mongolicum. The yield and quality of allium mongolicum can be effectively improved by accurately controlling the light source, light intensity, the ratio of red and blue light in the light source, and the supplementary lighting time.

[0021] LED has the advantage of precise light quality adjustment. It can customize the spectrum combination of red light, blue light, green light, etc. according to the needs of different growth stages of sand onion, promote photosynthesis, morphological construction and secondary metabolism; at the same time, it is energy-saving and efficient, and its energy consumption is 30-50% lower than that of traditional light sources, which can greatly reduce production costs; the lamp has a long life of up to 50,000 hours, and is easy to maintain, reducing manpower and material investment; as a cold light source, it generates less heat, reduces the burden of cooling in the greenhouse in summer, and is conducive to stable temperature and humidity control. Compared with high-pressure sodium lamps and fluorescent lamps, it is more energy-saving, efficient and can be precisely controlled.

[0022] The present invention controls the light intensity to be between 100 and 300 μmol·m -2 ·s -1 Within the range of 100 μmol·m -2 ·s -1 When the light intensity exceeds 300 μmol·m, the photosynthesis of the allium will be inhibited due to insufficient energy supply, resulting in a decrease in photosynthesis rate. This will slow down the growth of the allium, make the leaves small and yellow, make the plant look thin as a whole, and reduce the number of tillers, which will seriously affect its yield. In addition, the synthesis of flavor substances will also be hindered, making the aroma of the allium weakened and the taste worse, eventually leading to a decrease in quality. When the light intensity exceeds 300 μmol·m -2 ·s -1 When the light is too strong, it will cause photoinhibition, destroy the photosynthetic structure of the leaves of the mongolica, damage the photosynthetic pigments, and significantly reduce the photosynthetic efficiency. In this case, the leaves of the mongolica may be burned, dried up, and curled, and the growth and development are significantly inhibited, and the yield is greatly reduced. At the same time, under strong light stress, the accumulation of secondary metabolites in the mongolica is abnormal, which further affects its quality and greatly reduces its overall quality.

[0023] Plant photosynthesis mainly uses light in the wavelength range of 400-700nm. In the visible spectrum of the light source (380-760nm), the light absorbed by the plant accounts for about 60-65% of the physiological radiation light, of which the red-orange light absorption of 610-720nm accounts for a large proportion. Based on this, the present invention selects LEDs with an output ratio of red light and blue light of 6:4-9:1 as the supplementary light source, which can meet the absorption requirements of sand onion for red light and blue light to the greatest extent, because red light is conducive to the synthesis of sand onion carbohydrates and promotes the growth and flowering of plants, while blue light has an important influence on physiological processes such as protein synthesis, stomatal opening and phototropism. The appropriate ratio can synergistically promote the photosynthesis, growth and development and metabolic process of sand onion, thereby enhancing the supplementary light effect and improving the yield and quality of sand onion. Exceeding this range will lead to an imbalance in the ratio of red and blue light. If the ratio of red light is too high and the blue light is insufficient, the sand onion may have problems such as slender stems, thin and fragile leaves, and decreased stress resistance. It may also affect the morphological construction and nutrient accumulation of the sand onion. If the ratio of blue light is too high and the red light is insufficient, the growth rate of the sand onion will slow down, the tillering will decrease, the yield will decrease, and the leaf color may become abnormal, and the taste and flavor will deteriorate, seriously affecting the quality and market value of the sand onion.

[0024] The present invention performs a 5-hour light supplementation operation from 6:30 pm to 11:30 pm, combines light supplementation under daylight and dark conditions, and can simulate the change of natural light duration on the basis of improving the lighting effect, provide a more suitable light cycle for the sand onion, promote the self-regulation of the sand onion, and allow the sand onion to continue to carry out some important physiological activities at night, such as the synthesis of substances in the dark reaction stage, further enhance the photosynthesis efficiency, accelerate the growth and development of the plant, and thus improve the yield and quality of the sand onion. Exceeding this range will lead to a too long light supplementation time, and the sand onion may experience "light fatigue", reduce the photosynthetic efficiency, and affect the accumulation of photosynthetic products; it may also disrupt the normal physiological rhythm of the sand onion, leading to hormone imbalance, thereby affecting the growth of the sand onion, such as abnormal leaf growth, poor root development, etc., and also increase the energy consumption cost; while if the light supplementation time is too short, it cannot meet the demand for light duration for the growth of the sand onion, photosynthesis is limited, the plant grows slowly, and tillers are reduced, and it is also difficult to achieve the improvement of yield and quality.

[0025] The present invention discloses the following technical effects:

[0026] 1. Promote growth: The present invention adopts a red and blue combined LED light source with a specific light intensity to supplement light in a specific period of time, which can effectively promote the photosynthesis of allium mongolicum, improve the photosynthetic efficiency, and accelerate its growth process.

[0027] 2. Improve yield and quality: The present invention can increase the yield of Allium mongolicum by reasonable light supplementation, and at the same time improve its quality, such as increasing the content of nutrients such as flavonoids, and enhancing the nutritional value.

[0028] 3. Energy saving and high efficiency: The LED light source used in the present invention has the characteristics of low energy consumption and long life. The use of the supplementary light method of the present invention can reduce energy consumption and reduce production costs.

[0029] 4. Precise control: The present invention can perform precise spectrum adjustment according to the growth requirements of allium mongolicum by selecting LED light sources of specific wavelengths and combinations, thereby enhancing the supplementary lighting effect.

[0030] In summary, the present invention provides an efficient, energy-saving and precise lighting control scheme for the cultivation of allium mongolicum through the application research of LED light sources in the cultivation of allium mongolicum facility, which has significant economic and social benefits and is expected to promote the development of the allium mongolicum facility cultivation industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The effects of LED supplementary lighting with different light intensities on the yield and quality indicators of Allium mongolicum, among which a is the effect on malondialdehyde content, b is the effect on stem diameter, c is the effect on yield, d is the effect on flavonoid content, and e is the effect on plant height. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as limiting the present invention, but should be understood as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0033] It should be understood that the terms described in the present invention are only for describing a particular embodiment and are not intended to limit the present invention. In addition, for the numerical range in the present invention, it should be understood that each intermediate value between the upper and lower limits of the scope is also specifically disclosed. The intermediate value in any stated value or stated range, and each smaller range between any other stated value or intermediate value in the described range is also included in the present invention. The upper and lower limits of these smaller ranges can be independently included or excluded in the scope.

[0034] Unless otherwise indicated, all technical and scientific terms used herein have the same meanings as those generally understood by those skilled in the art. Although the present invention describes only preferred methods and materials, any methods and materials similar or equivalent to those described herein may also be used in the implementation or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials associated with the documents. In the event of a conflict with any incorporated document, the content of this specification shall prevail.

[0035] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments of the present invention description without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention description will be apparent to those skilled in the art. The present invention description and examples are exemplary only.

[0036] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0037] The room temperature in the following examples and comparative examples of the present invention is 25±5° C. unless otherwise specified.

[0038] Unless otherwise specified, the raw materials used in the following examples and comparative examples of the present invention are all commercially available products, and the sources of the commercially available products have no effect on the technical effects of the present invention.

[0039] The watering management described in the following embodiments and comparative examples of the present invention includes: watering (watering thoroughly) after each mowing, and during the growth period after the mowing of the mongolica, watering is performed every 10 to 15 days in summer (adjusted according to the soil moisture conditions), and watering is performed every 15 to 20 days in winter (adjusted according to the soil moisture conditions); the fertilizer management includes: after the mongolica is mowed 1 to 2 times, if there is a phenomenon of fertilizer and water deficiency such as slow growth and yellow leaves, topdressing should be performed, and 8 to 12 kg of ammonium nitrate should be applied per mu.

[0040] Embodiment 1 and Embodiment 4 described below of the present invention are actually the same embodiment, and the processing methods and final results of the two are the same. The purpose of setting two embodiments for the same technical solution here is to form a better comparison.

[0041] Examples 1 to 3 and Comparative Examples 1 to 2

[0042] In order to verify the effect of the output ratio of red light and blue light on the yield and quality of Allium mongolicum, Examples 1 to 3 and Comparative Examples 1 to 2 were set as follows:

[0043] 1. Experimental materials:

[0044] Allium mongolicum from Minqin, Gansu Province was selected as the test material, and LED was used as the light source.

[0045] 2. Experimental methods:

[0046] Six light treatments were designed in the experiment: red light: blue light = 7:3 (Example 1, recorded as RB7:3), red light: blue light = 8:2 (Example 2, recorded as RB8:2), red light: blue light = 9:1 (Example 3, recorded as RB9:1), red light: blue light = 4:6 (Comparative Example 1, recorded as RB4:6), red light: blue light = 10:0 (Comparative Example 2, recorded as RB10:0) and no supplementary light (CK) treatment. Each treatment was repeated three times, and each treatment area occupied 2m 2 , a total of 18 treatment areas. Each area was isolated with a 2.5m×2m black and white plastic film to ensure that the lighting between the areas was independent of each other and to avoid interference from other light sources. Allium mongolicum was cultured at room temperature, and each treatment was exposed to natural light during the day and supplemented with light for 5 hours at night from 18:30 to 23:30. The illumination under different lighting conditions was measured using a plant light analyzer (PLA-30 Plant Lighting Analyzer), so that the supplementary light intensity of each treatment was maintained at 100μmol·m -2 ·s -1 The experiment started on the first day after the Allium mongolicum was cut. Fertilizer and water were supplied by drip irrigation. Other management measures were the same. The Allium mongolicum was harvested 30 days later and the experiment ended.

[0047] 3. Growth index determination: Sampling was performed after the experiment. Ten plants were randomly sampled from each treatment. The plants were cut flat at 1 cm above the stem of Allium mongolicum. The plant height and stem diameter of Allium mongolicum were measured with a vernier caliper. The yield of Allium mongolicum was weighed with an electronic balance. The malondialdehyde (MDA) content of Allium mongolicum was determined by visible spectrophotometry using the Boxbio MDA content detection kit. Flavonoids were determined by spectrophotometry.

[0048] 4. Data analysis: SPSS 26.0 software was used for data processing and analysis, and Duncan's multiple comparison method was used for one-way analysis of variance, where p < 0.05 indicated a significant difference, and p < 0.01 indicated an extremely significant difference. Prism 10.0 and Microsoft Excel 2024 software were used to draw the corresponding tables.

[0049] The results are shown in Tables 1 and 2.

[0050] Table 1 Effect of the output ratio of red light and blue light on plant height, stem diameter and yield of Allium mongolicum

[0051] deal with Plant height(cm) Stem diameter (mm) <![CDATA[Output (kg / m 2 )]]> CK <![CDATA[240.4 c ]]> <![CDATA[1.85 b ]]> <![CDATA[0.66 b ]]> RB9:1 <![CDATA[307.6 a ]]> <![CDATA[2.04 a ]]> <![CDATA[0.97 a ]]> RB8:2 <![CDATA[297.2 b ]]> <![CDATA[2.05 a ]]> <![CDATA[0.98 a ]]> RB7:3 <![CDATA[294.9 b ]]> <![CDATA[2.09 a ]]> <![CDATA[1.02 a ]]> RB4:6 <![CDATA[260 d ]]> <![CDATA[1.95 b ]]> <![CDATA[0.75 c ]]> RB10:0 <![CDATA[285.3 c ]]> <![CDATA[1.92 c ]]> <![CDATA[0.82 b ]]>

[0052] Table 2 Effect of the output ratio of red light and blue light on the content of flavonoids and malondialdehyde in Allium mongolicum

[0053] deal with Flavonoids (mg / g) Malondialdehyde (mg / g) CK <![CDATA[4.004 b ]]> <![CDATA[19.716 a ]]> RB9:1 <![CDATA[6.467 a ]]> <![CDATA[16.247 c ]]> RB8:2 <![CDATA[6.629 a ]]> <![CDATA[16.425 bc ]]> RB7:3 <![CDATA[6.926 a ]]> <![CDATA[17.476 b ]]> RB4:6 <![CDATA[4.856 c ]]> <![CDATA[18.204 b ]]> RB10:0 <![CDATA[5.203 b ]]> <![CDATA[18.912 b ]]>

[0054] As shown in Table 1, in terms of the height of Allium mongolicum, CK has the lowest plant height. Compared with the control group CK, the plant heights of RB9:1, RB8:2, and RB7:3 supplementary light treatments increased by 27.95%, 23.63%, and 22.66%, respectively. This shows that supplementary light treatment has a significant promoting effect on the growth of Allium mongolicum plants. Among them, the plant height reached the highest value when RB9:1 was treated, which was significantly different from the control group CK, with an increase of 27.95%; compared with the RB8:2 and RB7:3 treatments, the increases were 3.49% and 4.30%, respectively; specifically, the plant height of RB8:2 treatment increased by 23.63% compared with the control group CK, and was similar to the plant height value of RB7:3 treatment, with no significant difference between the two (P>0.05), but the three treatments described in Examples 1 to 3 were significantly improved compared with the control group CK (P<0.05). And compared with the treatments of Comparative Examples 1 to 2, the plant heights of the three treatments described in Examples 1 to 3 were also significantly improved.

[0055] In terms of stem thickness of allium mongolicum, compared with the control group CK (stem thickness of 1.85mm), the stem thickness of allium mongolicum treated with RB9:1, RB8:2 and RB7:3 supplementary light increased to 2.04mm, 2.05mm and 2.09mm respectively, all of which increased significantly. Among them, the stem thickness of allium mongolicum treated with RB7:3 was significantly higher than that of the control group CK, which was 1.13 times that of the control group; the RB9:1 and RB8:2 treatments increased by 10.27% and 10.81% respectively compared with the control group, and the stem thickness values ​​of the three supplementary light treatments of RB9:1, RB8:2 and RB7:3 were similar, and there was no significant difference between them (P>0.05). And compared with the treatments of comparative examples 1 to 2, the stem thickness of the three treatments described in Examples 1 to 3 was also significantly improved.

[0056] In terms of yield, after supplementary light treatment, the yield of Allium mongolicum RB9:1, RB8:2 and RB7:3 treatments increased by 46.97%, 48.48% and 54.55% respectively compared with CK. The yield of the three supplementary light treatments (RB9:1, RB8:2 and RB7:3) was significantly higher than that of the control group CK (P<0.05), among which the yield of RB7:3 treatment was significantly higher than that of other treatments, but the yield difference between RB9:1 and RB8:2 treatments was not significant (P>0.05). Compared with the treatments of Comparative Examples 1 to 2, the yield of the three treatments described in Examples 1 to 3 was also significantly improved.

[0057] In summary, it can be seen that the supplementary lighting treatment under a specific ratio of red light to blue light has a significant effect on the stem diameter and yield of Allium mongolicum, especially the RB7:3 supplementary lighting treatment has the most outstanding effect in increasing yield, which provides an important reference for supplementary lighting strategies for the high-yield cultivation of Allium mongolicum.

[0058] As shown in Table 2, in terms of flavonoid content, after light supplementation treatment, the flavonoid content of Allium mongolicum RB9:1, RB8:2 and RB7:3 treatments increased by 61.51%, 65.56% and 72.98% respectively compared with the control group CK. The flavonoid content of the three light supplementation treatments (RB9:1, RB8:2 and RB7:3) was significantly higher than that of the control group CK (P<0.05), among which the flavonoid content of RB7:3 treatment was significantly higher than that of other treatments, but the difference in flavonoid content between RB9:1 and RB8:2 treatments was not significant (P>0.05). Compared with the treatments of Comparative Examples 1 to 2, the flavonoid content of the three treatments described in Examples 1 to 3 was also significantly improved.

[0059] In terms of MDA content, after supplementary light treatment, the MDA content of Allium mongolicum RB9:1, RB8:2 and RB7:3 treatments was reduced by 17.60%, 16.79% and 11.36% respectively compared with the control group CK. The MDA content of the three supplementary light treatments (RB9:1, RB8:2 and RB7:3) was significantly lower than that of the control group CK (P<0.05), however, the difference in MDA content between the three supplementary light treatments RB9:1, RB8:2 and RB7:3 was not significant (P>0.05). Compared with the treatments of Comparative Examples 1 to 2, the MDA content of the three treatments described in Examples 1 to 3 was also reduced.

[0060] Embodiments 4 to 6

[0061] In order to verify the effect of light intensity on the yield and quality of Allium mongolicum, Examples 4 to 6 and Comparative Examples 3 to 4 were set up, as follows:

[0062] 1. Experimental materials:

[0063] Allium mongolicum from Minqin, Gansu Province was selected as the test material, and LED was used as the light source.

[0064] 2. Experimental methods:

[0065] The experiment was designed with five different light intensity treatments: 100 μmol·m -2 ·s -1 (Example 4, denoted as T1), 200 μmol·m -2 ·s -1 (Example 5, denoted as T2) and 300 μmol·m -2 ·s -1 (Example 6, denoted as T3) The output ratio of red light to blue light was 7:3 for each treatment. Three repetitions were set for each treatment, and each treatment area occupied 2m 2, a total of 15 treatment areas. Each area was isolated by a 2.5m×2m black and white plastic film to ensure that the lighting between the areas was independent of each other and avoid interference from other light sources. The sand onion was cultured at room temperature, and each treatment was exposed to natural light during the day and supplemented with light for 5 hours at night from 18:30 to 23:30. The illumination under different lighting conditions was measured using a plant light analyzer (PLA-30 Plant Lighting Analyzer). The experiment started on the first day after the sand onion was cut, and fertilizer and water were supplied by drip irrigation. Other management measures were the same. The sand onion was harvested after 30 days, and the experiment ended.

[0066] 3. Growth index determination: Sampling was performed after the experiment. Ten plants were randomly sampled from each treatment. The plants were cut flat at 1 cm above the stem of Allium mongolicum. The plant height and stem diameter of Allium mongolicum were measured with a vernier caliper. The yield of Allium mongolicum was weighed with an electronic balance. The malondialdehyde (MDA) content of Allium mongolicum was determined by visible spectrophotometry using the Boxbio MDA content detection kit. Flavonoids were determined by spectrophotometry.

[0067] 4. Data analysis: SPSS 26.0 software was used for data processing and analysis, and Duncan's multiple comparison method was used for one-way analysis of variance, where p < 0.05 indicated a significant difference, and p < 0.01 indicated an extremely significant difference. Prism 10.0 and Microsoft Excel 2024 software were used to draw the corresponding graphs.

[0068] The results are as follows Figure 1 shown.

[0069] Figure 1 The effects of LED supplementary lighting with different light intensities on the yield and quality indicators of Allium mongolicum, among which a is the effect on malondialdehyde content, b is the effect on stem diameter, c is the effect on yield, d is the effect on flavonoid content, and e is the effect on plant height. Figure 1 It can be seen that in terms of plant height, the Allium mongolicum plant height was the highest under T3 treatment, followed by T2 and T1. There was a significant difference between T1 and the other two groups, but no significant difference between T2 and T3.

[0070] In terms of stem diameter, the Allium mongolicum under T2 treatment had the largest stem diameter, followed by T3 and T1, but the differences among the three were not significant; in terms of yield, the Allium mongolicum under T2 treatment had the highest yield, which was 15.64% and 34.13% higher than that of T1 and T3, respectively, and significantly higher than the other two treatments.

[0071] In terms of flavonoid content, the content of flavonoids in Allium mongolicum under T3 treatment was the highest, followed by T2 and T1, and there were significant differences among the groups.

[0072] In terms of MDA content, the MDA content of Allium mongolicum under T3 treatment was the highest, followed by T1 and T2, and there were significant differences among the groups.

[0073] It can be seen that different light intensities have significant effects on the growth, quality and yield of Allium mongolicum. The T2 treatment performed best in the growth and development of Allium mongolicum and was the optimal light intensity for cultivating Allium mongolicum.

[0074] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0075] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for cultivating Allium mongolicum using LED as a supplementary light source, characterized in that: The steps include: After the Allium mongolicum is cut, the Allium mongolicum is supplemented with light every day until the Allium mongolicum is harvested again; then the Allium mongolicum is cut, and then the above steps are repeated; The fill light treatment includes: providing natural light during the day, and providing fill light for 5 hours using LED as a light source when there is no natural light at night.

2. The method for cultivating Allium mongolicum using LED as a supplementary light source according to claim 1, characterized in that: The time of the supplementary light is from 6:30pm to 11:30pm.

3. The method for cultivating Allium mongolicum using LED as a supplementary light source according to claim 1, characterized in that: The output ratio of red light to blue light during the fill light process is 6:4 to 9:

1.

4. The method for cultivating Allium mongolicum using LED as a supplementary light source according to claim 1, characterized in that: The light intensity of the supplementary light is 100-300 μmol·m -2 ·s -1 .

5. The method for cultivating Allium mongolicum using LED as a supplementary light source according to claim 1, characterized in that: The method for cultivating mongolica using LED as a supplementary light source also includes water and fertilizer management of the mongolica.

6. The method for cultivating Allium mongolicum using LED as a supplementary light source according to claim 5, characterized in that: The water and fertilizer management includes watering management and fertilizer management; the watering management includes: watering after each mowing, during the growth period after mowing the mongolica, watering every 10 to 15 days in summer, and every 15 to 20 days in winter; the fertilizer management includes: after mowing the mongolica 1 to 2 times, if there is a phenomenon of fertilizer and water deficiency due to slow growth and yellow leaves, topdressing should be carried out, and 8 to 12 kg of ammonium nitrate should be applied per mu.

7. A method for improving the yield and quality of Allium mongolicum, characterized in that: The method comprises the following steps: cultivating allium mongolicum by adopting the method for cultivating allium mongolicum using LED as a supplementary light source as described in any one of claims 1 to 6.

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