Greenhouse light supplement system and greenhouse

Abstract

The present application relates to the technical field of agricultural equipment, and provides a greenhouse light supplement system and a greenhouse. The greenhouse light supplement system comprises a support, a light supplement assembly, the light supplement assembly comprising a plurality of light supplement units, the plurality of light supplement units being arranged above the support along the length direction of the greenhouse, a first light reflection assembly, the first light reflection assembly comprising a first light reflection plate and a first driving mechanism, the first light reflection plate being arranged above the light supplement unit, the first driving mechanism being in transmission connection with the first light reflection plate and being used for adjusting the inclination angle of the first light reflection plate relative to the support, and a second light reflection assembly, the second light reflection assembly comprising a second light reflection plate and a second driving mechanism, the second driving mechanism being arranged below the support, the second driving mechanism being in transmission connection with the second light reflection plate and being used for adjusting the inclination angle of the second light reflection plate relative to the support. The present application solves the defect that the light supplement of the LED lamp under the cultivation condition of the existing greenhouse and the like facilities is difficult to fully play and light energy is easily wasted.

Description

Technical Field

[0001] This invention relates to the field of agricultural equipment technology, and in particular to a greenhouse supplemental lighting system and a greenhouse. Background Technology

[0002] In greenhouse cultivation, LED lighting technology has been widely applied to the cultivation of various fruit trees. This technology effectively compensates for insufficient light in greenhouse environments and boasts advantages such as high luminous intensity, high reliability, low cost, and long lifespan. Specifically in grape cultivation, LED lighting can promote plant growth and development, and increase fruit yield and quality, making it of great significance for greenhouse grape production.

[0003] However, under greenhouse and other facility cultivation conditions, the supplemental lighting effect of LED lights is often difficult to fully realize. Due to limitations in the installation location of the lights, the angle of light illumination, and the structure of the facilities, some light cannot effectively reach the grapevines, resulting in a waste of light energy and limiting further improvements in supplemental lighting efficiency. Summary of the Invention

[0004] This invention provides a greenhouse supplemental lighting system and a greenhouse, which solves the problem in the prior art that LED lights are difficult to fully utilize under greenhouse and other facility cultivation conditions, which easily leads to the waste of light energy.

[0005] The first aspect of this invention provides a greenhouse supplemental lighting system, comprising: A support frame, configured to be arranged along the length of the greenhouse, for supporting the plants; A supplemental lighting assembly, comprising multiple supplemental lighting units, wherein the multiple supplemental lighting units are spaced apart above the support along the length of the greenhouse and face the support; The first reflective assembly includes a first reflector and a first driving mechanism. The first reflector is disposed above the supplementary lighting unit and is used to reflect light to the bracket. The first driving mechanism is connected to the first reflector and is used to adjust the tilt angle of the first reflector relative to the bracket. The second reflective assembly includes a second reflector and a second driving mechanism. The second driving mechanism is located below the bracket and is used to reflect light to the bracket. The second driving mechanism is connected to the second reflector and is used to adjust the tilt angle of the second reflector relative to the bracket.

[0006] According to the greenhouse supplemental lighting system provided by the present invention, the distance between the supplemental light and the center line of the support is 20cm to 30cm along the width direction of the greenhouse, and the distance between the supplemental light and the support is 20cm to 40cm along the height direction of the greenhouse.

[0007] The greenhouse supplemental lighting system provided by the present invention includes: Two first reflective components are respectively located on both sides of the center line of the support along the width direction of the greenhouse; Two second reflective components are respectively located on both sides of the center line of the support along the width direction of the greenhouse; The supplemental lighting unit includes two supplemental lights, which are respectively located on both sides of the center line of the support along the width of the greenhouse.

[0008] According to the greenhouse supplemental lighting system provided by the present invention, the first drive mechanism includes a first motor, a drum and two suspension cable units. The drum is connected to the output shaft of the first motor, and the two suspension cable units are respectively located at both ends of the drum along the length of the greenhouse. The sling unit includes a first sling and a second sling. The first end of the first sling and the first end of the second sling are both wound around the drum in opposite directions. The second end of the first sling is connected to the first end of the first reflector in the width direction of the greenhouse, and the second end of the second sling is connected to the second end of the first reflector in the width direction of the greenhouse.

[0009] According to the greenhouse supplemental lighting system provided by the present invention, the sling unit further includes a first pulley and a second pulley spaced apart along the length of the greenhouse, the drum is located between the first pulley and the second pulley, the first sling is wound around the first pulley, and the second sling is wound around the second pulley.

[0010] According to the greenhouse supplemental lighting system provided by the present invention, the second driving mechanism includes a second motor and a rotating shaft. The rotating shaft is disposed on the bottom wall of the second reflector along the length direction of the greenhouse. The output shaft of the second motor is connected to the rotating shaft for driving the rotating shaft to rotate around its own axis and drive the second reflector to rotate.

[0011] According to the greenhouse supplemental lighting system provided by the present invention, both the first reflector and the second reflector are arc-shaped reflectors.

[0012] According to the greenhouse supplemental lighting system provided by the present invention, along the width direction of the greenhouse, the distance between the first reflector and the center line of the support is less than the distance between the second reflector and the center line of the support, and along the height direction of the greenhouse, the distance between the first reflector and the support is less than the distance between the second reflector and the support.

[0013] A second aspect of the present invention provides a greenhouse, comprising: Multiple greenhouse supplemental lighting systems as described above are spaced apart within the greenhouse along its width.

[0014] A third aspect of the present invention provides a method for supplementing light to grapes based on a greenhouse supplemental lighting system or a greenhouse, comprising: Supplemental lighting was provided during the grape's fruit enlargement and ripening stages using a supplemental lighting system with a light intensity of 300 µmol•m. -2 •s -1 The supplemental lighting time is from 18:00 to 24:00, and the red-to-blue light ratio is 3:1.

[0015] The greenhouse supplemental lighting system provided by this invention, by setting up a first reflective component and a second reflective component, wherein the first reflective component includes a first reflector plate and a first driving mechanism disposed above the supplemental lighting unit, and the second reflective component includes a second reflector plate and a second driving mechanism disposed below the support, wherein the first driving mechanism and the second driving mechanism respectively adjust the tilt angle of the first reflector plate and the second reflector plate relative to the support, thereby effectively reflecting the light emitted upward by the supplemental lighting unit and the light illuminating the ground onto the plant surface, significantly improving the utilization rate of light energy. Furthermore, by adjusting the angle of the reflector plate through the driving mechanism, it can adapt to the needs of the plant for light direction at different growth stages, realizing flexible adjustment of the supplemental lighting angle, and solving the problem in the prior art where the limitation of the lamp installation position and the light irradiation angle during greenhouse supplemental lighting causes some light to be unable to effectively act on the plant, resulting in the waste of light energy.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a greenhouse provided in an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of supplemental lighting after winter pruning in a greenhouse, provided in an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of supplemental lighting after summer pruning in a greenhouse, provided in an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of daytime sunlight after winter pruning in a greenhouse, provided in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of daytime sunlight after summer pruning in a greenhouse, provided in an embodiment of the present invention.

[0023] Figure label: 100, bracket; 200, supplementary lighting assembly; 210, supplementary lighting unit; 211, supplementary light; 300, first reflector assembly; 310, first reflector; 320, first drive mechanism; 321, first motor; 322, drum; 323, sling unit; 3231, first sling; 3232, second sling; 3233, first pulley; 3234, second pulley; 400, second reflector assembly; 410, second reflector; 420, second drive mechanism; 421, second motor; 422, rotating shaft. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0025] It should be noted that, in the embodiments of the present invention, the length, width, and height of the greenhouse can all be referenced. Figure 1 The arrows shown in the diagram, along with the three directions, are used to describe the relative positional relationships of the components and should not be interpreted as an absolute limitation on the actual size or structure of the greenhouse.

[0026] See Figures 1 to 5 As shown, the greenhouse supplemental lighting system provided in this embodiment of the invention includes: a support frame 100, a supplemental lighting component 200, a first reflective component 300, and a second reflective component 400.

[0027] The support frame 100 is configured to be arranged along the length of the greenhouse to support plants; the supplemental lighting assembly 200 includes a plurality of supplemental lighting units 210, which are spaced apart above the support frame 100 along the length of the greenhouse and facing the support frame 100; the first reflective assembly 300 includes a first reflector 310 and a first driving mechanism 320, the first reflector 310 is arranged above the supplemental lighting units 210 to reflect light to the support frame 100, and the first driving mechanism 320 is drivenly connected to the first reflector 310 to adjust the tilt angle of the first reflector 310 relative to the support frame 100; the second reflective assembly 400 includes a second reflector 410 and a second driving mechanism 420, the second driving mechanism 420 is arranged below the support frame 100 to reflect light to the support frame 100, and the second driving mechanism 420 is drivenly connected to the second reflector 410 to adjust the tilt angle of the second reflector 410 relative to the support frame 100.

[0028] The greenhouse supplemental lighting system provided by this invention, by setting a first reflective component 300 and a second reflective component 400, wherein the first reflective component 300 includes a first reflector 310 and a first driving mechanism 320 disposed above the supplemental lighting unit 210, and the second reflective component 400 includes a second reflector 410 and a second driving mechanism 420 disposed below the support 100, wherein the first driving mechanism 320 and the second driving mechanism 420 respectively adjust the tilt angle of the first reflector 310 and the second reflector 410 relative to the support 100, thereby effectively reflecting the light emitted upward by the supplemental lighting unit 210 and the light illuminating the ground to the plant surface, significantly improving the utilization rate of light energy, and by adjusting the angle of the reflector through the driving mechanism, it can adapt to the needs of plants for light direction at different growth stages, realizing flexible adjustment of the supplemental lighting angle, and solving the problem in the prior art that some light cannot be effectively applied to the plants and cause light energy waste due to the limitations of the lamp installation position and light illumination angle during greenhouse supplemental lighting.

[0029] Specifically, the support frame 100 is arranged along the length of the greenhouse to provide support for climbing vines such as grapes, so that the plants maintain a regular distribution pattern in the extension direction of the main vines and lateral branches, thereby forming a stable light-receiving interface for the supplemental light, so that the light reflected by the supplemental light component 200 and the first reflector component 300 and the second reflector component 400 can concentrate and evenly illuminate the leaves and fruits of the plants.

[0030] In some embodiments, the support frame 100 can be a trellis structure composed of multiple uprights and horizontal wires, which is continuously arranged along the length of the greenhouse to form a continuous plant support surface. Furthermore, the perforated structure of the trellis allows some of the light emitted by the supplementary lighting unit 210 to pass through the support frame 100 and illuminate the second reflector component 400, which then reflects the light back onto the plant's shaded side, achieving multi-angle illumination of the plant's upper and lower surfaces and front and rear sides.

[0031] The supplemental lighting component 200 is used to provide artificial lighting to the plants on the support 100 under conditions of insufficient natural light by arranging multiple supplemental lighting units 210 at intervals along the length of the greenhouse. Each supplemental lighting unit 210 is set facing the support 100 so that the emitted light directly shines on the sun-facing side of the plant and the upper surface of the leaves to supplement the effective radiation for photosynthesis.

[0032] In some embodiments, the supplementary lighting unit 210 may be a light-emitting diode (LED) lamp, which has the characteristics of high luminous intensity, good reliability, low cost and long life. Furthermore, LED lamp beads with specific spectral ratios can be selected according to the needs of different growth stages of the plant to optimize photosynthetic efficiency.

[0033] The supplementary lighting units 210 can be installed above the support frame 100 by suspending them on the top beam of the greenhouse or by using support rods. Each supplementary lighting unit 210 is kept at a preset vertical distance from the support frame 100 and arranged at equal intervals along the length of the greenhouse or in a manner corresponding to the planting position of the plants to ensure uniform light coverage.

[0034] Understandably, depending on actual needs, the supplementary lighting unit 210 can be placed directly above the support 100 or offset to one side of the support 100 to adapt to the light direction requirements of different tree structures and plants at different growth stages. For example, when the plant is young or after winter pruning, offsetting the supplementary lighting unit 210 can prevent strong direct sunlight from scorching the young buds. During the fruit enlargement period, adjusting the relative position of the supplementary lighting unit 210 and the support 100 can allow the fruit clusters to receive more light.

[0035] The first reflector 300 is used to collect and redirect the light emitted upward by the supplementary lighting unit 210 and the light reflected and lost after shining on the upper structure of the greenhouse. The light is reflected onto the plant surface on the support 100 by the first reflector 310 to reduce the waste caused by the upward dissipation of light energy. At the same time, the first drive mechanism 320 adjusts the tilt angle of the first reflector 310 relative to the support 100 according to the height of the plant at different growth stages and the canopy distribution, so that the reflected light always points to the effective light-receiving area of ​​the plant.

[0036] The first reflective assembly 300 includes a first reflector 310 and a first drive mechanism 320. The first reflector 310 can be a metal plate with a high reflectivity coating, a mirror stainless steel plate, or a composite material plate with a reflective film attached. Its reflective surface is set towards the bracket 100 to maximize the light reflection efficiency.

[0037] In some embodiments, the first drive mechanism 320 may be an electric push rod, one end of which is hinged to the top beam or fixed bracket 100 of the greenhouse, and the other end is hinged to the back of the first reflector 310. The extension and retraction of the electric push rod pushes the first reflector 310 to rotate around its hinge point, thereby achieving the adjustment of the tilt angle. Alternatively, the first drive mechanism 320 may also be a worm gear structure, in which the first reflector 310 is fixedly connected to the worm gear, and the worm is connected to the drive motor. When the motor drives the worm to rotate, it drives the worm gear and the first reflector 310 to rotate around their axis, thereby achieving precise adjustment of the tilt angle and using the self-locking characteristics of the worm gear to maintain the stability of the adjusted angle.

[0038] The first drive mechanism 320 can also be configured to combine manual and electric adjustment according to actual needs. That is, a manual adjustment handle and locking device are set between the first reflector 310 and the greenhouse structure, and an electric drive unit is configured as an auxiliary so that the angle can still be adjusted manually in the event of equipment maintenance or emergency, so as to ensure the continuous operation of the supplementary lighting system.

[0039] The second reflector 400 is used to reflect the light emitted by the supplementary light unit 210 through the gap between the plant canopy and the support 100 to the ground, as well as the natural light during the day that shines to the ground through the top of the greenhouse. The light is then reflected again by the second reflector 410 to the shaded side and lower leaf area of ​​the plant on the support 100, so that the lower part and back of the plant can receive effective light. At the same time, the second drive mechanism 420 adjusts the tilt angle of the second reflector 410 relative to the support 100 according to the canopy height and leaf thickness at different growth stages of the plant, so that the reflected light is always directed to the light-requiring area at the bottom of the plant.

[0040] The second reflector assembly 400 includes a second reflector 410 and a second drive mechanism 420. The second reflector 410 can be a metal plate with a high reflectivity coating, a mirror stainless steel plate, or a composite material plate with a reflective film attached. Its reflective surface is facing upward toward the support 100 so as to reflect light from the ground upward to the lower leaves and fruit of the plant.

[0041] Similarly, in some embodiments, the second drive mechanism 420 can also be an electric push rod, one end of which is hinged to the greenhouse floor and the other end is hinged to the back of the second reflector 410. The extension and retraction of the electric push rod pushes the second reflector 410 to rotate around its hinge point, thereby achieving the adjustment of the tilt angle. Alternatively, the second drive mechanism 420 can also be a worm gear structure, in which the second reflector 410 is fixedly connected to the worm gear, and the worm is connected to the drive motor. When the motor drives the worm to rotate, it drives the worm gear and the second reflector 410 to rotate around their axis, thereby achieving precise adjustment of the tilt angle and using the self-locking characteristics of the worm gear to maintain the stability of the adjusted angle.

[0042] The number of the first reflective component 300 and the second reflective component 400 can be configured according to the width of the support 100 and the distribution of the plant canopy. For example, when the support 100 is wide or a double-row planting pattern is adopted, multiple sets of first reflective components 300 can be arranged side by side along the width direction above the same support 100, and multiple sets of second reflective components 400 can be correspondingly arranged below the support 100, so that light can be effectively reflected and covered in different areas of the plant canopy.

[0043] See Figure 1 As shown, according to some embodiments of the present invention, the greenhouse supplemental lighting system includes two first reflective components 300 and two second reflective components 400.

[0044] Along the width of the greenhouse, two first reflective components 300 are respectively located on both sides of the center line of the support 100, and two second reflective components 400 are respectively located on both sides of the center line of the support 100.

[0045] The supplementary lighting unit 210 includes two supplementary lights 211, which are respectively located on both sides of the center line of the support 100 along the width direction of the greenhouse.

[0046] By placing two first reflective components 300 on both sides of the support 100 along the width of the greenhouse, and placing two second reflective components 400 on both sides of the support 100 along the width of the greenhouse, and correspondingly setting the supplementary lighting unit 210 as two supplementary lights 211, the light emitted by the supplementary lighting unit 210 and the light reflected from the ground can simultaneously illuminate from both sides of the plant canopy, avoiding uneven light reception caused by unilateral supplementary lighting. This is especially suitable for cultivation modes with wide trellises or double-row planting, so that the leaves and fruits on both sides of the plant can obtain balanced light conditions.

[0047] Specifically, the two first reflective components 300 located on both sides of the support 100 can reflect the light emitted upward by the supplementary lighting unit 210 to the left and right halves of the plant canopy, respectively (see reference). Figure 1(as shown in the diagram), while the two second reflective components 400 located on both sides of the support 100 reflect light from the ground to the left and right areas below the plant canopy (see reference). Figure 1 (As shown in the diagram), the four sets of reflective components work together to create a three-dimensional light supplementation system on the vertical and horizontal levels of the plant, effectively eliminating the light dead angles caused by the plant itself blocking the light, so that the plant can obtain uniform light distribution from top to bottom and from left to right.

[0048] See Figure 1 As shown, according to some embodiments of the present invention, the first drive mechanism 320 includes a first motor 321, a drum 322, and two suspension cable units 323. The drum 322 is connected to the output shaft of the first motor 321, and the two suspension cable units 323 are respectively disposed at both ends of the drum 322 along the length direction of the greenhouse. The suspension cable unit 323 includes a first suspension cable 3231 and a second suspension cable 3232. The first end of the first suspension cable 3231 and the first end of the second suspension cable 3232 are both wound around the drum 322, and the winding directions are opposite. The second end of the first suspension cable 3231 is connected to the first end of the first reflector 310 in the width direction of the greenhouse, and the second end of the second suspension cable 3232 is connected to the second end of the first reflector 310 in the width direction of the greenhouse.

[0049] By configuring the first drive mechanism 320 to include a first motor 321, a drum 322, and two suspension cable units 323, and placing the two suspension cable units 323 at both ends of the drum 322 along the length of the greenhouse, with a first suspension cable 3231 and a second suspension cable 3232 in opposite directions wound around each suspension cable unit 323 and connected to both ends of the width direction of the first reflector 310, when the first motor 321 drives the drum 322 to rotate, the first suspension cable 3231 and the second suspension cable 3232 in the same suspension cable unit 323 are wound and unwound in opposite directions, thereby causing the first reflector 310 to rotate around its central axis in the width direction, achieving precise adjustment of the tilt angle of the first reflector 310. At the same time, this structure uses a single motor to synchronously control the suspension cables on both sides, ensuring the consistency of the angle of the first reflector 310 at each point along the length direction, and avoiding the problem of distortion and deformation of the reflective surface caused by asynchronous adjustment at both ends.

[0050] In some embodiments, the first motor 321 may be located at the end of the drum 322 and coaxially connected to the drum 322 to directly drive the drum 322 to rotate in a set direction. Alternatively, the first motor 321 may be located on one side of the drum 322 and connected to the drum 322 via gear transmission or belt transmission to drive the drum 322 to rotate around its axis.

[0051] The first motor 321 can be a servo motor or a stepper motor to achieve precise control over the rotation angle of the drum 322 and the length of the sling winding and unwinding, thereby precisely adjusting the tilt angle of the first reflector 310.

[0052] See Figure 1 As shown, according to some embodiments of the present invention, the sling unit 323 further includes a first pulley 3233 and a second pulley 3234 spaced apart along the length of the greenhouse, a drum 322 located between the first pulley 3233 and the second pulley 3234, a first sling 3231 wound around the first pulley 3233, and a second sling 3232 wound around the second pulley 3234.

[0053] By adding a first pulley 3233 and a second pulley 3234, the first sling 3231 and the second sling 3232 are respectively wound around the corresponding pulleys and their directions are changed. This allows the rotational power of the drum 322 to be smoothly transmitted to both ends of the width direction of the first reflector 310. At the same time, it reduces frictional loss between the slings and the greenhouse structure, and keeps the slings taut during the winding and unwinding process, avoiding problems such as delayed angle adjustment or unstable positioning of the first reflector 310 due to slack slings.

[0054] Both the first pulley 3233 and the second pulley 3234 can be fixedly installed on the top beam of the greenhouse via the bracket 100 or the hanging rod to connect to the steel structure of the greenhouse, so that the pulley is located at a predetermined position above the first reflector 310, so as to ensure that the traction direction of the sling is perpendicular to the flipping axis of the first reflector 310.

[0055] See Figure 1 As shown, according to some embodiments of the present invention, the second drive mechanism 420 includes a second motor 421 and a rotating shaft 422. The rotating shaft 422 is disposed on the bottom wall of the second reflector 410 along the length direction of the greenhouse. The output shaft of the second motor 421 is connected to the rotating shaft 422 for driving the rotating shaft 422 to rotate around its own axis and drive the second reflector 410 to rotate.

[0056] By configuring the second drive mechanism 420 to include a second motor 421 and a rotating shaft 422, with the rotating shaft 422 located along the length of the greenhouse on the bottom wall of the second reflector 410 and fixedly connected to the second reflector 410, and the output shaft of the second motor 421 being connected to the rotating shaft 422 for transmission, the second reflector 410 rotates synchronously with the rotating shaft 422 when the second motor 421 drives the rotating shaft 422 to rotate, thereby precisely adjusting the tilt angle of the second reflector 410 relative to the support 100. This structure is compact and reliable, and is convenient for installation and maintenance in the ground space below the support 100.

[0057] The transmission connection between the output shaft of the second motor 421 and the rotating shaft 422 can be any one of the following: direct connection via coupling, gear transmission, or belt transmission. For example, when the output shaft of the second motor 421 and the rotating shaft 422 are coaxial, they can be directly connected via coupling to achieve synchronous transmission of rotational power. This method has a simple structure, high transmission accuracy, and is suitable for applications with limited installation space. When the output shaft of the second motor 421 and the rotating shaft 422 are perpendicular to each other, a worm gear mechanism or a bevel gear pair can be used for transmission. The output shaft of the second motor 421 is connected to the worm or driving bevel gear, and the rotating shaft 422 is connected to the worm gear or driven bevel gear. This transmission method achieves speed reduction and torque increase while changing the direction of rotation, and utilizes the self-locking characteristic of the worm gear to maintain the stability of the adjusted angle.

[0058] Similarly, the second motor 421 can also be a servo motor or a stepper motor to achieve precise control of the rotation angle of the shaft 422 and the tilt angle of the second reflector 410, so as to facilitate programmed adjustment according to the needs of different growth stages of the plant.

[0059] See Figure 1 As shown, according to some embodiments of the present invention, both the first reflector 310 and the second reflector 410 are arc-shaped reflectors.

[0060] By setting both the first reflector 310 and the second reflector 410 as arc-shaped reflectors, the incident light can be concentrated or diffused during the reflection process. According to the curvature design of the arc surface, the light can be concentrated on a specific area of ​​the plant or the coverage of the light can be expanded, thereby further improving the utilization efficiency of light energy and the uniformity of supplemental lighting.

[0061] The size and curvature of the first reflector 310 and the second reflector 410 can be optimized according to the width of the support 100, the height of the plant canopy and its distribution pattern. For example, when the plant canopy is relatively wide, an arc-shaped reflector with a smaller curvature is used to expand the light reflection coverage. When it is necessary to concentrate the light on the fruit area, an arc-shaped reflector with a larger curvature is used to enhance the local light intensity.

[0062] See Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the distance between the supplemental lighting 211 and the center line of the support 100 along the width direction of the greenhouse (see...) Figure 2 The distance between the supplemental light 211 and the support 100 is 20cm to 30cm (as shown in L1). Along the height of the greenhouse, the distance between the supplemental light 211 and the support 100 is 20cm to 40cm (see [reference]). Figure 2 (As shown in L2).

[0063] By limiting the distance between the supplemental light 211 and the center line of the support 100 in the width direction to 20cm to 30cm, and the distance between the supplemental light 211 and the support 100 in the height direction to 20cm to 40cm, a reasonable light distance is maintained between the supplemental light 211 and the plant. This avoids the scorching of leaves and fruits due to excessive light intensity caused by too close a distance, while ensuring the effective coverage of the light. At the same time, this distance range provides sufficient light reflection space for the first reflector 300 and the second reflector 400, so that the reflected light can be incident on the light-requiring parts of the plant at a suitable angle.

[0064] The centerline of the support 100 can be regarded as the axis of the main vine or the center of the canopy of the plant. This axis extends along the length of the greenhouse and serves as the baseline for plant growth. The distance between the supplemental light 211 and the centerline of the support 100 reflects the horizontal offset of the supplemental light 211 relative to the main vine of the plant. By controlling this offset, the light emitted by the supplemental light 211 and the light reflected by the reflector can illuminate the leaves and fruit surfaces of the plant at the optimal angle.

[0065] As an example, along the width of the greenhouse, the distance between the supplementary light 211 and the center line of the support 100 can be 20cm, 25cm or 30cm, etc., and along the height of the greenhouse, the distance between the supplementary light 211 and the support 100 can be 20cm, 30cm or 40cm, etc.

[0066] See Figure 1 and Figure 3 As shown, according to some embodiments of the present invention, the distance between the first reflector 310 and the center line of the support 100 along the width direction of the greenhouse (see...) Figure 3 (As shown in L3) is less than the distance between the center line of the second reflector 410 and the support 100 (see L3). Figure 3 As shown in L4), and along the height direction of the greenhouse, the distance between the first reflector 310 and the support 100 (see...) Figure 3 (As shown in L5) is less than the distance between the second reflector 410 and the bracket 100 (see L5). Figure 3 (As shown in L6).

[0067] By making the distance between the first reflector 310 and the support 100 in both the width and height directions smaller than the distance between the second reflector 410 and the support 100, the first reflector 310 is positioned closer to the plant canopy than the second reflector 410. As a result, the first reflector 310 can reflect the light emitted upward by the supplementary lighting unit 210 to the upper and middle parts of the plant with a shorter optical path, while the second reflector 410, due to its relatively far placement distance, can reflect the light from the ground to the lower part of the plant and the shaded side with a wider optical path coverage, forming a layered and complementary light distribution, so that the plant can obtain suitable light conditions at different height levels.

[0068] The greenhouse provided by the present invention will be described below. The greenhouse described below can be referred to in correspondence with the greenhouse supplementary lighting system described above.

[0069] The greenhouse provided in this embodiment of the invention includes: a plurality of greenhouse supplemental lighting systems as described in any of the preceding embodiments, wherein the plurality of greenhouse supplemental lighting systems are spaced apart within the greenhouse along the width direction of the greenhouse.

[0070] The greenhouse provided by this invention, since it adopts the greenhouse supplementary lighting system as described in any of the above embodiments, also possesses all the beneficial effects of the greenhouse supplementary lighting system, which will not be repeated here.

[0071] The grape supplemental lighting method provided by the present invention is described below. The grape supplemental lighting method described below can be referred to in correspondence with the greenhouse supplemental lighting system and greenhouse described above.

[0072] The grape supplemental lighting method based on a greenhouse supplemental lighting system or a greenhouse provided in this embodiment of the invention includes the following steps.

[0073] S110. During the grape's fruit enlargement and ripening period, supplemental lighting is provided using a supplemental lighting unit 200. The supplemental lighting formula is: light intensity 300 µmol•m -2 •s -1 The supplemental lighting time is from 18:00 to 24:00, and the red-to-blue light ratio is 3:1.

[0074] The grape supplemental lighting method provided by this invention uses light intensity of 300 µmol•m during the grape's fruit enlargement to ripening period. -2 •s -1 Supplemental lighting is provided from 18:00 to 24:00 with a red-to-blue light ratio of 3:1. This provides sufficient photosynthetically effective radiation to the grapes during this critical growth stage, promoting sugar accumulation and coloring. At the same time, nighttime supplemental lighting avoids the peak of natural daylight, effectively connecting with natural light and extending the duration of photosynthesis, thereby improving fruit yield and quality.

[0075] To further describe the specific implementation of the grape supplemental lighting method provided by the present invention, the supplemental lighting process for the key growth stage from fruit enlargement to fruit ripening is described in detail below.

[0076] This embodiment provides a method for supplemental lighting of grapes for two harvests a year based on a greenhouse supplemental lighting system. This method is suitable for greenhouse grape cultivation under insufficient light conditions, such as in South China, and can achieve the cultivation goal of two harvests a year and significantly improve fruit yield and quality.

[0077] The greenhouse supplemental lighting system of this embodiment is installed inside a greenhouse. Grapevines are tied to a support frame 100 for growth. The support frame 100 is arranged along the length of the greenhouse to support the main vines and lateral branches. A supplemental lighting unit 210 is installed 25cm from the main vine along the width of the greenhouse and 30cm above the lateral branches. A first reflector 310 is suspended from the top beam of the greenhouse via cables and pulleys. Cables wound around the pulleys are connected to a first motor 321. The first motor 321 drives the cables to move up and down on the pulleys, thereby changing the length of the cables connecting the first reflector 310 and the supplemental lighting unit 210 at both ends, thus changing the tilt angle of this combined system. On the ground, a second reflector 410 is installed 50cm away from the main grape vine along the width of the greenhouse. The second reflector 410 is controlled by a rotating shaft 422, which is connected to a second motor 421. When the second motor 421 drives the rotating shaft 422 to rotate, the angle of the second reflector 410 changes synchronously.

[0078] This embodiment of grape cultivation employs a two-harvest-a-year technique. The cultivation process for the first crop of grapes is as follows: Covering the vine with plastic film begins in December, followed by winter pruning from January to February. During pruning, each fruiting branch is left with 2 to 3 buds, and the pruning point is 25cm away from the main vine. After pruning, the branches are promptly and evenly tied to the support frame according to the tree shape. The first bud at the pruning cut is treated with a dormancy-breaking agent to promote bud break. Subsequently, the surrounding film is used for insulation, and both the plastic film and the surrounding film are kept airtight to maintain warmth. The temperature inside the greenhouse is maintained above 15℃ to promote bud sprouting. The first harvest is conducted from June to July. Fertilization is applied two to three days before the end of the July harvest to help the vines recover.

[0079] The cultivation process for the second crop of grapes is as follows: Summer pruning is carried out from August to September. During pruning, 10 to 12 buds are left on each fruiting mother branch. The pruning point is 50cm away from the main vine and 25cm away from the first winter pruning point. After pruning, the branches are tied evenly to the support frame according to the tree shape. The first bud at the cut is treated with a dormancy-breaking agent to promote budding. It will start to sprout after 3 to 5 days. The second crop of grapes is harvested from December to January of the following year.

[0080] During the grape's fruit enlargement and ripening stages, supplemental lighting was provided using the aforementioned greenhouse lighting system, with a light intensity of 300 µmol•m. -2 •s -1 The supplemental lighting time is from 18:00 to 24:00, and the red-to-blue light ratio is 3:1. During the supplemental lighting process, the first motor 321 drives the combined system of the first reflector 310 and the supplemental lighting unit 210 to adjust the angle, and the second motor 421 drives the second reflector 410 to adjust the angle, so as to meet the needs of different pruning periods for the direction of light.

[0081] In the supplemental lighting state after winter pruning, the supplemental lighting unit 210, the first reflector 310, and the second reflector 410 are all driven by corresponding motors to adjust their angles. The reflectors located above and below the same support 100 are arranged in a crisscross pattern. The supplemental lighting forms four light path configurations: First, the light emitted by the supplemental lighting unit 210 directly illuminates the grape leaves; second, the light emitted by the supplemental lighting unit 210 passes through the support 100 and shines on the second reflector 410, which then reflects the light onto the grape leaves on the back of the support 100; third, the light emitted upward by the supplemental lighting unit 210 is reflected by the first reflector 310 and then illuminates the grape leaves; fourth, the light emitted upward by the supplemental lighting unit 210 is reflected by the first reflector 310 and then shines on the second reflector 410, which then reflects it a second time onto the grape leaves on the back of the support 100.

[0082] In the supplemental lighting state after summer trimming, the supplemental lighting unit 210, the first reflector 310 and the second reflector 410 are also driven by the motor to adjust the angle, but the way the supplemental lighting units are combined in pairs is changed. The first reflector 310 on each side bracket 100 and the second reflector 410 below the adjacent side bracket 100 are combined in a cross-shaped arrangement, and the supplemental lighting rays also form the above four light path forms.

[0083] During the daytime, without supplemental lighting, sunlight enters the greenhouse and forms a linked light path with the reflectors. This light path has two forms: First, sunlight shines on the second reflector 410 and is reflected to the grape leaves on the back of the support 100; second, sunlight shines on the second reflector 410, is reflected through the support 100, and shines on the first reflector 310, and is then reflected a second time by the first reflector 310 to the grape leaves.

[0084] Through the above-described supplemental lighting method, this embodiment can make full use of the light emitted by the supplemental lighting unit 210 and natural sunlight during the two growth cycles of grapes, significantly improving light energy utilization and achieving increased grape yield and improved fruit quality.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A greenhouse supplemental lighting system, characterized in that, include: A support frame, configured to be arranged along the length of the greenhouse, for supporting the plants; A supplemental lighting assembly, comprising multiple supplemental lighting units, wherein the multiple supplemental lighting units are spaced apart above the support along the length of the greenhouse and face the support; The first reflective assembly includes a first reflector and a first driving mechanism. The first reflector is disposed above the supplementary lighting unit and is used to reflect light to the bracket. The first driving mechanism is connected to the first reflector and is used to adjust the tilt angle of the first reflector relative to the bracket. The second reflective assembly includes a second reflector and a second driving mechanism. The second driving mechanism is located below the bracket and is used to reflect light to the bracket. The second driving mechanism is connected to the second reflector and is used to adjust the tilt angle of the second reflector relative to the bracket.

2. The greenhouse supplemental lighting system according to claim 1, characterized in that, include: Two first reflective components are respectively located on both sides of the center line of the support along the width direction of the greenhouse; Two second reflective components are respectively located on both sides of the center line of the support along the width direction of the greenhouse; The supplemental lighting unit includes two supplemental lights, which are respectively located on both sides of the center line of the support along the width of the greenhouse.

3. The greenhouse supplemental lighting system according to claim 2, characterized in that, Along the width of the greenhouse, the distance between the supplemental light and the center line of the support is 20cm to 30cm, and along the height of the greenhouse, the distance between the supplemental light and the support is 20cm to 40cm.

4. The greenhouse supplemental lighting system according to claim 1, characterized in that, The first drive mechanism includes a first motor, a drum, and two sling units. The drum is connected to the output shaft of the first motor, and the two sling units are respectively located at both ends of the drum along the length of the greenhouse. The sling unit includes a first sling and a second sling. The first end of the first sling and the first end of the second sling are both wound around the drum in opposite directions. The second end of the first sling is connected to the first end of the first reflector in the width direction of the greenhouse, and the second end of the second sling is connected to the second end of the first reflector in the width direction of the greenhouse.

5. The greenhouse supplemental lighting system according to claim 4, characterized in that, The sling unit also includes a first pulley and a second pulley spaced apart along the length of the greenhouse. The drum is located between the first pulley and the second pulley. The first sling is wound around the first pulley, and the second sling is wound around the second pulley.

6. The greenhouse supplemental lighting system according to claim 1, characterized in that, The second driving mechanism includes a second motor and a rotating shaft. The rotating shaft is located on the bottom wall of the second reflector along the length of the greenhouse. The output shaft of the second motor is connected to the rotating shaft for driving the rotating shaft to rotate around its own axis and drive the second reflector to rotate.

7. The greenhouse supplemental lighting system according to any one of claims 1 to 6, characterized in that, Both the first reflector and the second reflector are arc-shaped reflectors.

8. The greenhouse supplemental lighting system according to any one of claims 1 to 6, characterized in that, Along the width direction of the greenhouse, the distance between the center line of the first reflector and the support is less than the distance between the center line of the second reflector and the support, and along the height direction of the greenhouse, the distance between the first reflector and the support is less than the distance between the second reflector and the support.

9. A greenhouse, characterized in that, include: The greenhouse supplemental lighting system as described in any one of claims 1 to 8 is provided at intervals within the greenhouse along the width direction of the greenhouse.

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