Light control method for promoting yield and quality of blueberry in facility based on red and blue light

Abstract

The application discloses a light control method based on red and blue light for promoting yield and quality of facility blueberries, belongs to the technical field of plant lighting, and particularly relates to a light control method for promoting yield and quality of facility blueberries. The method solves the problem that the existing blueberry lighting technology cannot promote the yield and quality of blueberries. The method comprises the following steps: step one, in the preset time period in spring, facility blueberries are irradiated by spring irradiation light; facility blueberries are irradiated by spring irradiation light to simulate the natural light irradiation law, the light period is from 6:30 in the morning to 18:30 in the afternoon, and the light duration is 6-12 h / d; the spring irradiation light is red and blue light, and the red to blue ratio is 1:3, 1:1 or 3:1. The light control method based on red and blue light for promoting yield and quality of facility blueberries is suitable for the cultivation of facility blueberries and promotes the yield and quality of facility blueberries.

Description

Technical Field

[0001] The present invention relates to the technical field of plant lighting, and in particular to a lighting control method for promoting both yield and quality increase of blueberries in a facility. Background Art

[0002] blueberry( Vaccinium spp. ) belongs to Ericaceae ( Ericaceae ) Vaccinium ( Vaccinium Blueberries are a plant native to the U.S. and Canada. Ripe blueberries are often dark blue or bluish-purple, with a unique sweet and sour flavor. Rich in sugars, acids, vitamins, anthocyanins, polyphenols, and other nutrients, they boast numerous benefits, including eye protection, antioxidants, anti-tumor properties, and cardiovascular and cerebrovascular disease prevention. Listed as one of the five healthiest foods by the Food and Agriculture Organization of the United Nations, they are a popular small berry.

[0003] The rapid development of protected agriculture has made it possible to grow and harvest crops outside of traditional seasons. Protected blueberry cultivation offers significant advantages in climate control, precise environmental management, pest and disease control, flexible production cycles, improved quality, and standardized production. This has led to a year-on-year expansion in the area of ​​blueberry cultivation, making it the cultivation method with the greatest potential for development.

[0004] Light, a key factor influencing blueberry growth and development, is particularly important in greenhouse cultivation. Natural light is often insufficient in greenhouse cultivation, which impacts photosynthesis and flower bud differentiation, further affecting yield and quality. Understanding the plant's light requirements and providing appropriate lighting conditions are crucial aspects of greenhouse cultivation.

[0005] In the prior art, there are technical solutions for promoting the early ripening of blueberries by controlling light conditions. For example, the Chinese invention patent document with publication number "CN117296622A" and application date "20231229" discloses a "method and device for promoting the early ripening of blueberries under greenhouse substrate cultivation conditions", which provides a method and device for promoting the early ripening of blueberries under greenhouse substrate cultivation conditions. The method for promoting the early ripening of blueberries under greenhouse substrate cultivation conditions includes cultivating blueberry plants in a greenhouse to allow the blueberry plants to grow new branches; after the new branches of the blueberry plants grow to a predetermined state, the blueberry plants are subjected to shading treatment for at least fifteen days, and the shading treatment step includes covering the blueberry plants with shading materials between 4 and 7 pm on the day of the shading treatment, and removing the shading materials between 6 and 9 am on the second day of the shading treatment to allow the blueberry plants to receive light. The method provided in this application shortens the light exposure time of blueberry plants to induce blueberry plants to complete flower bud differentiation earlier and enter the flower and fruit growth and development stage, which can promote early flowering of blueberries, advance the time when blueberries mature and go on the market, reduce the risk of unsold and low prices for producers, and better meet the needs of consumers.

[0006] However, the blueberry lighting technologies represented by the above patent documents can only promote the early growth of blueberries, but cannot achieve a dual increase in blueberry yield and quality.

[0007] In summary, although light can promote the growth and development of facility (cultivated) blueberries, how to promote the dual improvement of blueberry yield and quality by precisely controlling light parameters such as light intensity, light duration and spectral distribution remains an unresolved problem in this field. Summary of the Invention

[0008] The present invention proposes a light control method based on red and blue light to promote the dual increase of blueberry yield and quality in facilities, which solves the problem that the existing blueberry lighting technology cannot promote the dual improvement of blueberry yield and quality.

[0009] The light control method for promoting both yield and quality of greenhouse blueberries based on red and blue light according to the present invention has the following technical solutions:

[0010] The method comprises the following steps:

[0011] Step 1: Use spring illumination light to irradiate the blueberries in the facility during the preset time period in spring:

[0012] Spring light was used to simulate the natural light pattern to regulate the light of blueberries in the facility. The light cycle was from 6:30 am to 18:30 pm and the light duration was 6-12 h / d.

[0013] The spring illumination light is red and blue light, and the red-to-blue ratio is 1:3, 1:1 or 3:1.

[0014] Furthermore, a preferred embodiment is provided, wherein the method further comprises step 2;

[0015] Step 2: During a preset autumn time period, the blueberries in the facility are irradiated with autumn light. The light control parameters of the autumn light are:

[0016] The light quantum flux density is 300~600μmol / m 2 .s, the photoperiod is from 7:30 am to 4:30 pm, and the light duration is 6 to 9 h / d;

[0017] The autumn illumination light is red and blue light, and the red-to-blue ratio is 1:3, 1:1 or 3:1.

[0018] Furthermore, a preferred embodiment is provided, wherein the method further comprises step 2;

[0019] Step 2: During a preset autumn time period, the blueberries in the facility are irradiated with autumn light. The light control parameters of the autumn light are:

[0020] The light quantum flux density is 300~600μmol / m 2 .s, the photoperiod is from 7:30 am to 5:30 pm, and the light duration is 8-10 h / d;

[0021] The autumn illumination light is full-spectrum light; the full-spectrum light includes ultraviolet light, visible light and infrared light, and its wavelength range is 200nm~1050nm.

[0022] Furthermore, a preferred embodiment is provided, wherein the blueberries grown in the facility are blueberries cultivated under glass or polyethylene film greenhouse conditions.

[0023] Furthermore, a preferred embodiment is provided, wherein the preset time period in autumn is the flower bud differentiation period of facility blueberries.

[0024] Furthermore, a preferred embodiment is provided, wherein in the step of irradiating the blueberries in the facility with autumn irradiation light during a preset time period in autumn:

[0025] Keep the blueberries in the dark outside of the light cycle each day.

[0026] Furthermore, a preferred embodiment is provided, wherein the preset time period in spring is the blueberry sprouting period in the facility.

[0027] Furthermore, a preferred embodiment is provided, wherein in the step of irradiating the blueberries in the facility with spring irradiation light during a preset time period in spring:

[0028] Regularly adjust the irradiation height of the spring light so that the irradiation height of the spring light changes with the changes in the height of the blueberry plants in the facility.

[0029] Furthermore, a preferred embodiment is provided, wherein the spring illumination is used to simulate the natural illumination pattern to regulate the illumination of blueberries in the facility:

[0030] From 6:30 to 7:30 in the morning to 11:00 in the afternoon, the light quantum flux density increases uniformly from weak to strong;

[0031] At 11:00 noon, the light quantum flux density reaches the highest set value and maintains it for 2 hours;

[0032] From 13:00 in the afternoon, the light quantum flux density begins to decrease evenly from strong to weak, and the even decrease of light quantum flux density ends between 16:30 and 18:30;

[0033] Among them, when the light quantum flux density starts to increase uniformly and ends to decrease uniformly, the light quantum flux density is 0~50μmol / m 2.s; the maximum setting value of the light quantum flux density is 250~450μmol / m 2 .s.

[0034] The present invention has the following beneficial effects:

[0035] 1. The light control method based on red and blue light to promote the dual increase of facility blueberry yield and quality described in the present invention, by regulating the light of facility blueberries during a preset time period in spring, effectively improves the light environment conditions in the facility, promotes the growth and development of blueberries, and ultimately achieves a dual increase in the quality and yield of facility blueberry fruits, further improving the economic benefits of blueberry production.

[0036] 2. The light control method based on red and blue light to promote the dual increase in the yield and quality of greenhouse blueberries described in the present invention, compared with conventional natural light cultivation, increases the yield of greenhouse blueberries after light control treatment during a preset time period in spring, affects the production of secondary metabolites, and promotes the accumulation of total phenols and anthocyanins in the fruit, thereby significantly improving quality indicators such as anthocyanin content and polyphenol content, thereby achieving a dual increase in the quantity and quality of greenhouse-cultivated blueberries.

[0037] The light control method for promoting both yield and quality increase of greenhouse blueberries based on red and blue light described in the present invention is suitable for the cultivation of greenhouse blueberries and promotes both yield and quality increase of greenhouse blueberries. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 This is a comparison chart of the autumn single flower bud quality of blueberries cultivated using a light control method based on red and blue light to promote both yield and quality increase in greenhouse blueberries and natural light irradiation in one embodiment of the present invention;

[0040] Figure 2 This is a graph comparing the fruit yield of blueberries cultivated using a light-controlled method based on red and blue light to increase both yield and quality in greenhouse blueberries and natural light, in one embodiment of the present invention;

[0041] Figure 3 This is a comparison chart of the anthocyanin content of blueberries grown using a light-controlled method based on red and blue light to increase both yield and quality in greenhouse blueberries and using natural light irradiation, in one embodiment of the present invention;

[0042] Figure 4This is a comparison chart of the total polyphenol content of blueberries cultivated using a light control method based on red and blue light to promote the dual increase in yield and quality of greenhouse blueberries and natural light irradiation in one embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to make the technical solutions and advantages of the present invention more clearly described, the specific embodiments of the present invention will be further described in detail and completely in conjunction with the accompanying drawings. The various embodiments described below are only part of the preferred embodiments of the present invention, rather than all implementation plans; the various embodiments described below are intended to explain the present invention and cannot be understood as limiting the present invention; the reasonable combination of the technical features defined in the various embodiments of the present invention, as well as all other implementation plans obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work, all fall within the scope of protection of the present invention.

[0044] Implementation Method 1: Combination Figures 1 to 4 This embodiment provides a light control method based on red and blue light to promote the dual increase of blueberry yield and quality in greenhouses. The specific implementation content is as follows:

[0045] The method comprises the following steps:

[0046] Step 1: Use spring illumination light to irradiate the blueberries in the facility during the preset time period in spring:

[0047] Spring light was used to simulate the natural light pattern to regulate the light of blueberries in the facility. The light cycle was from 6:30 am to 18:30 pm and the light duration was 6-12 h / d.

[0048] The spring illumination light is red and blue light, and the red-to-blue ratio is 1:3, 1:1 or 3:1.

[0049] In this embodiment, the red-to-blue ratio refers to the ratio of red light to blue light. A red-to-blue ratio of 1:3 can be expressed as R1:B3, where R is red, representing red light, and B is blue, representing blue light. Similarly, a red-to-blue ratio of 1:1 can be expressed as R1:B1, and a red-to-blue ratio of 3:1 can be expressed as R3:B1.

[0050] In this embodiment, the red and blue lights can be emitted using existing equipment.

[0051] In this embodiment, by regulating the light of the blueberries in the facility during a preset time period in spring, the light environment conditions in the facility are effectively improved, the growth and development of blueberries are promoted, and ultimately the quality and yield of the blueberries in the facility are both improved.

[0052] In this embodiment, in 6 to 12 h / d, ~ represents “to”, h represents “hour”, and / d represents “every day”.

[0053] Furthermore, in a preferred embodiment, during the preset time period in spring, the light cycle when the blueberries in the facility are irradiated with spring light is from 6:30 in the morning to 18:30 in the afternoon, and the light duration is 12h / d;

[0054] The red-to-blue ratio of the spring illumination light is 1:3.

[0055] In this embodiment, facility blueberry cultivation is a modern agricultural cultivation method, which refers to the use of engineering technology to carry out efficient agricultural production in a relatively controllable environment under specific facilities (such as multi-span greenhouses, solar greenhouses, plastic greenhouses, small arch sheds and breeding sheds). Facility blueberries here refer to blueberries cultivated under facility conditions. It should be noted that light is an important environmental factor affecting the growth and development of plants. It has a wide range of regulatory effects on the morphological construction, physiological metabolism, photoperiodic response, growth and development, and fruit quality of plants. The quality of light conditions directly affects the yield and quality of plants. Light intensity (photon flux density) directly affects the growth, development and structural characteristics of plants; photoperiod mainly affects the induction of floral formation and flower bud differentiation of plants; and light quality also affects the growth of plants and the formation of fruit quality.

[0056] Implementation Method 2: Combination Figures 1 to 4 This embodiment further defines the light control method for increasing both yield and quality of blueberries in a facility based on red and blue light as described in the first embodiment. Specific implementation details are as follows:

[0057] The method further comprises step 2;

[0058] Step 2: During a preset autumn time period, the blueberries in the facility are irradiated with autumn light. The light control parameters of the autumn light are:

[0059] The light quantum flux density is 300~600μmol / m 2 .s, the photoperiod is from 7:30 am to 4:30 pm, and the light duration is 6 to 9 h / d;

[0060] The autumn illumination light is red and blue light, and the red-to-blue ratio is 1:3, 1:1 or 3:1.

[0061] In this embodiment, by regulating the light during the preset autumn time period of the blueberry facility, the light environment conditions in the facility are effectively improved, and ultimately the individual quality of the blueberry flower buds in the autumn facility is improved.

[0062] It should be noted that when autumn light is used to irradiate blueberries in the facility, the light quantum flux density is 300~600μmol / m 2.s refers to the light quantum flux density irradiating the average layer of the upper leaves of the blueberry plant in the facility, which is 300~600μmol / m 2 .s.

[0063] In this embodiment, generally speaking, the distance between the irradiation height of the autumn irradiation light and the average layer of the upper leaves of the blueberry plant is 40 to 60 cm.

[0064] Furthermore, in a preferred embodiment, autumn illumination light is used to illuminate the blueberries in the facility during a preset time period in autumn; the light control parameters of the autumn illumination light are:

[0065] The light quantum flux density is 600 μmol / m 2 .s, the light cycle is from 9:00 am to 3:00 pm, and the light duration is 6 h / d;

[0066] The red-to-blue ratio of the autumn illumination light is 1:1.

[0067] Implementation Method 3: Combination Figures 1 to 4 This embodiment further defines the light control method for increasing both yield and quality of blueberries in a facility based on red and blue light as described in the first embodiment. Specific implementation details are as follows:

[0068] The method further comprises step 2;

[0069] Step 2: During a preset autumn time period, the blueberries in the facility are irradiated with autumn light. The light control parameters of the autumn light are:

[0070] The light quantum flux density is 300~600μmol / m 2 .s, the photoperiod is from 7:30 am to 5:30 pm, and the light duration is 8-10 h / d;

[0071] The autumn illumination light is full-spectrum light; the full-spectrum light includes ultraviolet light, visible light and infrared light, and its wavelength range is 200nm~1050nm.

[0072] It should be noted that the wavelength range of natural sunlight (referred to as natural light) is 150 to 4000 nm, while the wavelength range of the full-spectrum light is 200 nm to 1050 nm. The full-spectrum light can emit a spectrum close to that of natural light.

[0073] In this embodiment, existing equipment can be used to emit the full-spectrum light and red and blue light. For example, the dedicated biological growth full-cycle light environment experiment equipment model "FSL-BGL-DL010 - LED1000" can precisely control lighting parameters. This equipment can emit full-spectrum light with good continuity and integrity, as well as light with different light quality combinations (such as a combination of red and blue light in different ratios).

[0074] It should be noted that by regulating the light of blueberries in the facility during the preset time period in autumn, the light environment conditions in the facility were effectively improved, and ultimately the individual quality of the blueberry flower buds in the facility was improved.

[0075] It should be noted that regardless of whether red and blue light or full-spectrum light is used to irradiate the blueberries in the facility during the preset time period in autumn, or whether red and blue light is used to irradiate the blueberries in the facility during the preset time period in spring, the quality and yield of the blueberry fruits in the facility can be improved.

[0076] Implementation Method 4: Combination Figures 1 to 4 This embodiment further defines the light control method for increasing both yield and quality of blueberries in a facility based on red and blue light as described in the first embodiment. Specific implementation details are as follows:

[0077] The facility blueberries are blueberries cultivated under glass or polyethylene film greenhouse conditions.

[0078] Implementation Method 5: Combination Figures 1 to 4 This embodiment further defines the light control method for increasing both yield and quality of blueberries in a facility based on red and blue light as described in the first embodiment. Specific implementation details are as follows:

[0079] The preset time period in autumn is the flower bud differentiation period of facility blueberries.

[0080] In this embodiment, the flower bud differentiation period of the facility blueberry is from the beginning of the cessation of autumn shoot growth of the blueberry (i.e., facility blueberry) to the early stage of dormancy, and the total number of days of light regulation at this time is 35~45d (i.e., 35 to 45 days, ~ represents "to", and d represents "day").

[0081] Furthermore, in a preferred embodiment, during the blueberry flower bud differentiation period, the total number of days of light regulation is 45 days.

[0082] Implementation Method 6: Combination Figures 1 to 4 This embodiment further defines the light control method for increasing both yield and quality of blueberries in a facility based on red and blue light as described in Embodiment 2 or 3. Specific implementation details are as follows:

[0083] In the step of irradiating the blueberries in the facility with autumn irradiation light during a preset time period in autumn:

[0084] Keep the blueberries in the dark outside of the light cycle each day.

[0085] In this embodiment, a method of covering the greenhouse where the blueberries are located with a quilt is adopted to keep the blueberries in a light-proof state.

[0086] Furthermore, in a preferred embodiment, when the light cycle is between 7:30 and 16:30, the blueberries in the greenhouse are kept in a dark state (the greenhouse is covered with a quilt) outside the time period between 7:30 and 16:30.

[0087] Implementation Method VII: Combination Figures 1 to 4 This embodiment further defines the light control method for increasing both yield and quality of blueberries in a facility based on red and blue light as described in the first embodiment. Specific implementation details are as follows:

[0088] The preset time period in spring is the budding period of blueberries in the facility.

[0089] In this embodiment, the blueberry budding period of the facility is from the start of blueberry flower bud swelling to the leaf expansion period, and the total number of days of light regulation at this time is 30d~40d.

[0090] Furthermore, in a preferred embodiment, during the budding period of blueberries in the facility, the total number of days of light regulation is 40 days.

[0091] Implementation Method 8: Combination Figures 1 to 4 This embodiment further defines the light control method for increasing both yield and quality of blueberries in a facility based on red and blue light as described in the first embodiment. Specific implementation details are as follows:

[0092] In the step of irradiating the blueberries in the facility with spring irradiation light during a preset time period in spring:

[0093] Regularly adjust the irradiation height of the spring light so that the irradiation height of the spring light changes with the changes in the height of the blueberry plants in the facility.

[0094] In this embodiment, generally speaking, the distance between the irradiation height of the spring irradiation light and the average layer of the upper leaves of the blueberry plant is 40 to 60 cm.

[0095] Implementation Method 9: Combination Figures 1 to 4 This embodiment further defines the light control method for increasing both yield and quality of blueberries in a facility based on red and blue light as described in the first embodiment. Specific implementation details are as follows:

[0096] The spring light is used to simulate the natural light illumination pattern to regulate the light of the blueberries in the facility:

[0097] From 6:30 to 7:30 in the morning to 11:00 in the afternoon, the light quantum flux density increases uniformly from weak to strong;

[0098] At 11:00 noon, the light quantum flux density reaches the highest set value and maintains it for 2 hours;

[0099] From 13:00 in the afternoon, the light quantum flux density begins to decrease evenly from strong to weak, and the even decrease of light quantum flux density ends between 16:30 and 18:30;

[0100] Among them, when the light quantum flux density starts to increase uniformly and ends to decrease uniformly, the light quantum flux density is 0~50μmol / m 2 .s; the maximum setting value of the light quantum flux density is 250~450μmol / m 2 .s.

[0101] In this embodiment, the light control method for promoting the dual increase of blueberry yield and quality based on red and blue light is summarized as follows according to the time sequence from autumn to spring:

[0102] First, when the blueberries in the facility enter the autumn flower bud differentiation period, that is, from the time when the autumn shoots of the blueberries in the facility stop growing to the early stage of dormancy, full-spectrum light or red and blue light can be used for illumination treatment, or traditional treatment methods can be used;

[0103] Then, after a preset time period in the fall, the facility's blueberries enter a dormant period and undergo normal dormant production management;

[0104] Then, the dormancy period of the blueberries in the facility ended and entered the spring budding period, which is from the beginning of the blueberry flower bud swelling to the early stage of leaf expansion. At this time, red and blue light were controlled, and the total number of light control days was 30 to 40 days. Simulating the natural light exposure pattern, the light quantum flux density was regulated to increase uniformly from weak to strong from 6:30 to 7:30 to 11:00, reaching the highest set value at noon and maintaining it for 2 hours. At 13:00 in the afternoon, it began to decrease uniformly from strong to weak and ended at 16:30 to 18:30. The light quantum flux density at the start and end was 0~50μmol / m 2 .s, the maximum setting value of the light quantum flux density is 250~450μmol / m 2 .s.

[0105] Finally, after the preset time period in spring, the facility blueberries enter the peak flowering period, after which routine production management is carried out until the flower bud differentiation period in the next autumn.

[0106] Furthermore, in a preferred embodiment, spring light is used to simulate the natural light pattern to regulate the light of the blueberries in the facility:

[0107] The light quantum flux density was adjusted to increase uniformly from weak to strong from 6:30 to 7:30 to 11:00; it reached the highest set value at 11:00 noon and maintained for 2 hours; at 13:00 in the afternoon, it began to decrease uniformly from strong to weak and ended at 16:30 to 18:30; the light quantum flux density at the start and end was 25 μmol / m 2 .s, the maximum setting value of the light quantum flux density is 350μmol / m 2 .s.

[0108] Implementation Method 10: Combination Figures 1 to 4 This embodiment is described. This embodiment provides two specific examples of the above-mentioned light control method based on red and blue light to promote the dual increase of blueberry yield and quality in facilities.

[0109] The first specific embodiment:

[0110] In this example, three-year-old northern highbush blueberries with uniform growth were selected as the test material. They were planted in a greenhouse at the Institute of Natural Science and Ecology of the Heilongjiang Academy of Sciences. Based on the red-to-blue ratio of red light, photon flux density, and illumination duration, they were divided into nine groups, Q1 to Q9, as autumn treatment groups. Natural light was used as the control group for comparative experiments. The pH value of the planting soil was 4.2-5.3, and the relative humidity of the air was 60-80%.

[0111] In this embodiment, a light comparison experiment was conducted on blueberries in the facility using red and blue light during the preset time period in autumn, that is, from the beginning of the blueberry autumn shoots stopping growth to the early stage of dormancy, with a total light control day of 35 days.

[0112] The parameters of each group are shown in Table 1.

[0113] Table 1 Experimental parameters of autumn treatment group

[0114]

[0115] The results of the comparative experiment were carried out according to the experimental parameters in Table 1. Figure 1 shown.

[0116] Depend on Figure 1 It can be seen that by regulating the light of blueberries in the facility during the preset time period in autumn, the individual quality of blueberry flower buds in the facility can be improved compared with the traditional method of using natural light.

[0117] The second specific embodiment:

[0118] In this example, three-year-old northern highbush blueberries with uniform growth were selected as test materials and planted in a greenhouse at the Institute of Natural Science and Ecology of the Heilongjiang Academy of Sciences. Based on the red-to-blue ratio of red light, photon flux density, and illumination duration, the blueberries were divided into nine groups, from group 1 to group 9, for a total of nine spring treatment groups. Natural light was used as a control group for a comparative experiment. The pH value of the planting soil was 4.2-5.3, and the relative humidity of the air was 60-80%.

[0119] In this embodiment, the preset time period in spring is the budding period of the blueberries in the facility, which is from the swelling of the blueberry flower buds to the leaf expansion period. The total number of days of light regulation at this time is 30d~40d.

[0120] The parameters of each group are shown in Table 2.

[0121] Table 2 Experimental parameters of spring treatment group

[0122]

[0123] The results of the comparative experiment were carried out according to the experimental parameters in Table 2. Figures 2 to 4 shown.

[0124] Depend on Figure 2 It can be seen that by regulating the light of blueberries in the facility during the preset time period in spring, compared with the traditional method of using natural light, the fruit yield, fruit anthocyanin content and fruit total polyphenol content of blueberries in the facility can be increased, thereby achieving a double increase in the yield and quality of blueberries cultivated in the facility.

[0125] The above further describes the technical solution provided by the present invention in detail through several specific embodiments in order to highlight the advantages and benefits of the technical solution provided by the present invention. However, the several specific embodiments described above are not intended to limit the present invention. Any reasonable changes and improvements to the present invention, reasonable combinations of implementation methods and equivalent replacements based on the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A light control method based on red and blue light to promote the dual increase of blueberry yield and quality in facilities, characterized in that: The method comprises the following steps: Step 1: Use spring illumination light to irradiate the blueberries in the facility during the preset time period in spring: Spring light was used to simulate the natural light pattern to regulate the light of blueberries in the facility. The light cycle was from 6:30 am to 18:30 pm and the light duration was 12 h / d. The spring illumination light is red and blue light, and the red-to-blue ratio is 1:3; The preset time period in spring is the blueberry sprouting period in the facility; The spring light is used to simulate the natural light illumination pattern to regulate the light of the blueberries in the facility: From 6:30 to 7:30 in the morning to 11:00 in the afternoon, the light quantum flux density increases uniformly from weak to strong; At 11:00 noon, the light quantum flux density reaches the highest set value and maintains it for 2 hours; From 13:00 in the afternoon, the light quantum flux density begins to decrease evenly from strong to weak, and the even decrease of light quantum flux density ends between 16:30 and 18:30; Among them, when the light quantum flux density starts to increase uniformly and ends to decrease uniformly, the light quantum flux density is 0~50μmol / m 2 .s; the maximum setting value of the light quantum flux density is 250~450μmol / m 2 .s; The method further comprises step 2; Step 2: During a preset autumn time period, the blueberries in the facility are irradiated with autumn light. The light control parameters of the autumn light are: The light quantum flux density is 300~600μmol / m 2 .s, the photoperiod is from 7:30 am to 4:30 pm, and the light duration is 6 to 9 h / d; The autumn illumination light is red and blue light, and the red-to-blue ratio is 1:3, 1:1 or 3:1; Or, during the preset time period in autumn, the blueberries in the facility can be irradiated with autumn light; the light control parameters of the autumn light are: The light quantum flux density is 300~600μmol / m 2 .s, the photoperiod is from 7:30 am to 5:30 pm, and the light duration is 8-10 h / d; The autumn illumination light is full-spectrum light; the full-spectrum light includes ultraviolet light, visible light and infrared light, and its wavelength range is 200nm~1050nm.

2. The light control method for promoting the dual increase of blueberry yield and quality based on red and blue light according to claim 1 is characterized in that: The facility blueberries are blueberries cultivated under glass or polyethylene film greenhouse conditions.

3. The light control method for promoting the dual increase of blueberry yield and quality based on red and blue light according to claim 1 is characterized in that: The preset time period in autumn is the flower bud differentiation period of facility blueberries.

4. The light control method for promoting the dual increase of blueberry yield and quality based on red and blue light according to claim 1 is characterized in that: In the step of irradiating the blueberries in the facility with autumn irradiation light during the preset time period in autumn: Keep the blueberries in the dark outside of the light cycle each day.

5. The light control method for promoting the dual increase of blueberry yield and quality based on red and blue light according to claim 1 is characterized in that: In the step of irradiating the blueberries in the facility with spring irradiation light during a preset time period in spring: Regularly adjust the irradiation height of the spring light so that the irradiation height of the spring light changes with the changes in the height of the blueberry plants in the facility.

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