Seedling raising device for planting vegetables and seedling raising method thereof

Abstract

The invention discloses a seedling raising device for vegetable planting and a seedling raising method thereof, and relates to the technical field of vegetable seedling raising. According to the seedling raising device for vegetable planting and the seedling raising method thereof, through arrangement of the seedling raising bearing box, water is injected into the seedling raising bearing box until the liquid level exceeds the middle bearing plate, so that the water can be immersed into the seedling raising cylinder through the through holes and the conical expansion frame, and soil can absorb enough water in a bottom-to-top water supply mode; the soaking depth can reach 1 / 2 of the height of the seedling raising cylinder; compared with traditional upper portion watering, the upper portion watering is more thorough, the interval between two times of watering is lengthened, the problems that vegetable seedlings are wetted by upper portion watering and the surface soil humidity is too large are solved, the disease occurrence rate is effectively reduced, and the seedling raising effect is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vegetable seedling raising, and specifically relates to a seedling raising device and a seedling raising method for planting vegetables. Background Art

[0002] Seedling raising is one of the important links in agricultural production. When carrying out seedling raising treatment for vegetables, some facilities and equipment are needed to improve the seedling raising efficiency and quality; referring to Chinese Patent, the "seedling raising device and seedling raising method for planting vegetables" with the publication number: "CN118947525A", this patent points out that when the existing equipment is cultivating seedlings, the seedlings will encroach on each other's growth space, resulting in excessive competition among each seedling, and thus it is impossible to ensure that each plant can obtain sufficient nutrients and light; however, this equipment still has problems with poor seedling raising effect and poor operation convenience. For this reason, we propose a seedling raising device and a seedling raising method for planting vegetables to solve the above problems. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a seedling raising device and a seedling raising method for planting vegetables, which solve the problems raised in the above background art.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A seedling raising device for planting vegetables, including a machine body, a top cover frame is rotatably installed on the top of the machine body, a seedling raising carrier box is fixedly installed inside the machine body, a middle carrier plate is fixedly installed inside the seedling raising carrier box, a plurality of partition plates are fixedly installed on the top of the middle carrier plate and a plurality of slots are formed through the partition plates, and seedling raising cylinders are inserted into the slots;

[0005] A plurality of support ring frames are fixedly installed on the top of the middle carrier plate, and a plurality of support columns are fixedly installed on the top of the support ring frames. The support columns are in contact with the bottom of the corresponding seedling raising cylinders. A plurality of elastic sealing sheets are fixedly installed at the bottom of the seedling raising cylinders. A plurality of conical expansion frames are fixedly installed on the top of the support ring frames, and when the seedling raising cylinders are placed into the corresponding slots, the conical expansion frames can expand the elastic sealing sheets. A plurality of through holes are symmetrically formed inside the middle carrier plate;

[0006] A water delivery pump is connected to the outside of the seedling raising carrier box for delivering water into the seedling raising carrier box. A temperature and humidity control module is fixedly installed at the inner bottom of the machine body, and a temperature and humidity monitoring module is fixedly installed at the inner top of the machine body.

[0007] Preferably, an elastic filling member is provided between the seedling raising cylinder and the corresponding slot. The elastic filling member is fixedly installed inside the corresponding slot, and a rectangular plate is fixedly installed at the top of the seedling raising cylinder.

[0008] Preferably, a plurality of floating plates are slidably installed inside the seedling raising carrier box. A plurality of dredging rods are fixedly installed on the top of the floating plate. The dredging rods are used to dredge the through holes. Counterweight plates are fixedly installed on both sides of the bottom of the floating plate. A pressure relief valve is installed at the bottom of the seedling raising carrier box for discharging the water inside.

[0009] Preferably, a cleaning pipeline is fixedly installed at the inner bottom of the seedling raising carrier box. A cleaning pump is fixedly installed outside the seedling raising carrier box. The cleaning pump is communicated with the cleaning pipeline.

[0010] Preferably, a control panel is fixedly installed outside the machine body.

[0011] Preferably, an arc-shaped notch is formed inside the upper sealing frame. Limiting shaft rods are rotatably connected to both ends of the arc-shaped notch. A light-blocking cloth is wound around the outside of one of the limiting shaft rods. Winding pieces are fixedly installed at both ends of the other limiting shaft rod. The end of the winding piece is fixedly connected to the light-blocking cloth for driving the light-blocking cloth to move inside the arc-shaped notch.

[0012] Preferably, a return spring is sleeved on the end of the limiting shaft rod around which the light-blocking cloth is wound. A servo motor is provided at the end of the other limiting shaft rod. The servo motor is fixedly installed inside the upper sealing frame for driving the limiting shaft rod to operate.

[0013] Preferably, ventilation pipelines are fixedly installed on both sides inside the upper sealing frame. An arc-shaped blade is rotatably connected inside one of the ventilation pipelines. A driving motor is fixedly installed on the inner side of the upper sealing frame for driving the arc-shaped blade to rotate inside the corresponding ventilation pipeline.

[0014] Preferably, filter sheets are fixedly installed inside both of the ventilation pipelines on both sides.

[0015] A method for raising seedlings of vegetables, based on the above-mentioned seedling raising device, specifically includes the following steps:

[0016] S1. Put the vegetable seedlings to be cultivated together with the soil into the seedling raising tube, and then put the seedling raising tube into the corresponding slot. At this time, the seedling raising tube can be limited by the elastic filling member. When the seedling raising tube is put into the slot, a plurality of conical expansion frames can be inserted into the seedling raising tube to expand the corresponding elastic sealing piece;

[0017] S2. When watering the soil, by operating the delivery pump, water can be injected into the seedling raising carrier box until the liquid level exceeds the middle bearing plate, so that the water can penetrate into the soil inside the seedling raising tube through the through holes and the conical expansion frames. After watering is completed, open the pressure relief valve to lower the liquid level below the middle bearing plate;

[0018] S3. Through the operation of the servo motor, the corresponding limit shaft rod can be driven to rotate. With the cooperation of the winding piece, the light-blocking cloth can be driven to move inside the arc-shaped notch to block the upper sealing frame, thereby adjusting the lighting time of the vegetable seedlings.

[0019] The present invention provides a seedling-raising device and a seedling-raising method for growing vegetables. Compared with the prior art, the following beneficial effects are achieved:

[0020] (1) For the seedling-raising device and the seedling-raising method for growing vegetables, through the setting of the seedling-raising bearing box, by injecting water into the seedling-raising bearing box until the liquid level exceeds the middle bearing plate, the water can penetrate into the seedling-raising cylinder through the through holes and the conical expansion frame. Through the water supply method from bottom to top, the soil can absorb enough water, and the soaking depth can reach half of the height of the seedling-raising cylinder. Compared with the traditional upper watering method, it is more thorough, the interval between two waterings is extended, and the problems of wetting the vegetable seedlings by upper watering and excessive surface soil humidity are reduced, effectively reducing the incidence of diseases and further improving the seedling-raising effect.

[0021] (2) For the seedling-raising device and the seedling-raising method for growing vegetables, through the cooperation of the conical expansion frame and the elastic sealing piece, when the seedling-raising cylinder is lifted, the elastic sealing piece can be separated from the conical expansion frame to seal the bottom of the seedling-raising cylinder, avoiding the falling of the internal soil and the outflow of water. On the one hand, the water supply effect is ensured, and on the other hand, it is convenient to lift the seedling-raising cylinder for inspection, ensuring the convenience of seedling raising. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is the Figure 1 cross-sectional structure schematic diagram of the present invention;

[0024] Figure 3 is the Figure 2 front view structure schematic diagram of the present invention;

[0025] Figure 4 is the cross-sectional structure schematic diagram of the seedling-raising bearing box of the present invention;

[0026] Figure 5 is the Figure 4 enlarged structure schematic diagram at A in the present invention;

[0027] Figure 6 is the cross-sectional structure schematic diagram of the upper sealing frame of the present invention;

[0028] Figure 7 is the structure schematic diagram of the light-blocking cloth and the limit shaft rod of the present invention;

[0029] Figure 8This is a schematic cross-sectional view of the seedling-raising tube of the present invention.

[0030] In the figure: 1, the body; 101, the control panel; 2, the upper sealing frame; 201, the arc-shaped notch; 3, the ventilation duct; 301, the filter sheet; 4, the drive motor; 5, the arc-shaped blade; 6, the limit shaft rod; 601, the winding sheet; 602, the return spring; 7, the light-blocking cloth; 8, the servo motor; 9, the temperature and humidity monitoring module; 10, the seedling-raising bearing box; 11, the cleaning pump; 1101, the cleaning pipe; 12, the conveying pump; 13, the temperature and humidity control module; 14, the middle bearing plate; 1401, the through hole; 15, the partition plate; 1501, the elastic filling; 16, the seedling-raising tube; 1601, the rectangular plate; 1602, the elastic sealing sheet; 17, the floating plate; 1701, the counterweight plate; 1702, the dredging rod; 18, the support ring frame; 1801, the support column; 1802, the conical expansion frame. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-8 , the present invention provides two technical solutions, specifically including the following embodiments:

[0033] Embodiment 1:

[0034] In the embodiment of the present invention, a seedling-raising device for growing vegetables includes a body 1. An upper sealing frame 2 is rotatably installed on the top of the body 1. A seedling-raising bearing box 10 is fixedly installed inside the body 1. A middle bearing plate 14 is fixedly installed on the top of the seedling-raising bearing box 10. A plurality of partition plates 15 are fixedly installed on the top of the middle bearing plate 14 and form a plurality of slots through the partition plates 15. Seedling-raising tubes 16 are inserted into the slots.

[0035] Specifically, in the embodiment of the present invention, the upper sealing frame 2 is made of a transparent material, which can be used to ensure the lighting time of vegetable seedlings during the seedling-raising process.

[0036] In an embodiment of the present invention, specifically, a plurality of support ring frames 18 are fixedly installed on the top of the middle bearing plate 14, and a plurality of support columns 1801 are fixedly installed on the top of the support ring frames 18. The support columns 1801 are in contact with the bottom of the corresponding seedling-raising cylinder 16. A plurality of elastic sealing sheets 1602 are fixedly installed at the bottom of the seedling-raising cylinder 16. A plurality of conical expansion frames 1802 are fixedly installed on the top of the support ring frames 18, and are used for expanding the elastic sealing sheets 1602 when the seedling-raising cylinder 16 is placed into the corresponding slot. A plurality of through holes 1401 are symmetrically formed inside the middle bearing plate 14;

[0037] In an embodiment of the present invention, specifically, the water supply method for vegetable seedlings is bottom water supply. That is, after the vegetable seedlings are placed inside the seedling-raising cylinder 16, water is injected into the seedling-raising bearing box 10 until the liquid level exceeds the middle bearing plate 14, so that the water can enter the seedling-raising cylinder 16 through the through holes 1401 and the conical expansion frames 1802. Through the bottom-up water supply method, the soil can absorb enough water, and the soaking depth can reach half of the height of the seedling-raising cylinder 16; compared with the traditional upper watering method, it is more thorough, the interval between two waterings is extended, and the problems of wetting the vegetable seedlings by upper watering and excessive surface soil humidity are reduced, effectively reducing the incidence of diseases and further improving the seedling-raising effect;

[0038] In an embodiment of the present invention, specifically, through the cooperation of the conical expansion frame 1802 and the elastic sealing sheet 1602, when the seedling-raising cylinder 16 is picked up, the elastic sealing sheet 1602 can be separated from the conical expansion frame 1802 to seal the bottom of the seedling-raising cylinder 16, avoiding the falling of the internal soil and the outflow of water. On the one hand, it ensures the water supply effect, and at the same time is convenient for picking up and checking, ensuring the convenience of seedling raising;

[0039] In an embodiment of the present invention, specifically, a water pump 12 is connected to the outside of the seedling-raising bearing box 10 for transporting water into the seedling-raising bearing box 10. A temperature and humidity control module 13 is fixedly installed at the inner bottom of the machine body 1, and a temperature and humidity monitoring module 9 is fixedly installed at the inner top of the machine body 1;

[0040] In an embodiment of the present invention, specifically, the water pump 12 is an existing device for transporting water. The temperature and humidity control module 13 and the temperature and humidity monitoring module 9 are both existing devices, which will not be elaborated here;

[0041] In an embodiment of the present invention, specifically, an elastic filling member 1501 is provided between the seedling-raising cylinder 16 and the corresponding slot. The elastic filling member 1501 is fixedly installed inside the corresponding slot, and a rectangular plate 1601 is fixedly installed at the top of the seedling-raising cylinder 16;

[0042] In an embodiment of the present invention, specifically, the elastic filling member 1501 is used to limit the seedling-raising cylinders 16 of different sizes;

[0043] In the embodiment of the present invention, specifically, a plurality of floating plates 17 are slidably installed inside the seedling-raising carrier box 10. A plurality of dredging rods 1702 are fixedly installed on the top of the floating plate 17. The dredging rods 1702 are used to dredge the through holes 1401. Counterweight plates 1701 are fixedly installed on both sides of the bottom of the floating plate 17. A pressure relief valve is installed at the bottom of the seedling-raising carrier box 10 for discharging the water inside;

[0044] In the embodiment of the present invention, specifically, when the liquid level rises, the floating plate 17 can move upward with the liquid level, so that the plurality of dredging rods 1702 are respectively inserted into the through holes 1401 to dredge the through holes 1401 and ensure the water supply effect. When the liquid level drops, the floating plate 17 can move downward along the liquid level through the cooperation of the counterweight plates 1701;

[0045] In the embodiment of the present invention, specifically, the pressure relief valve is an existing device and will not be elaborated here;

[0046] In the embodiment of the present invention, specifically, a cleaning pipeline 1101 is fixedly installed at the inner bottom of the seedling-raising carrier box 10. A cleaning pump 11 is fixedly installed outside the seedling-raising carrier box 10. The cleaning pump 11 is communicated with the cleaning pipeline 1101;

[0047] In the embodiment of the present invention, specifically, the cleaning pump 11 is an existing device. When cleaning the seedling-raising carrier box 10, by running the cleaning pump 11, the impurities deposited at the bottom of the seedling-raising carrier box 10 can be pumped out through the cooperation of the cleaning pipeline 1101;

[0048] In the embodiment of the present invention, specifically, the cleaning pipeline 1101 at the bottom inside the seedling-raising carrier box 10 is of an open type, and the bottom of the seedling-raising carrier box 10 is inclined, which will not be elaborated here;

[0049] In the embodiment of the present invention, specifically, a control panel 101 is fixedly installed outside the machine body 1. The control panel 101 is controlled based on an existing PLC control module;

[0050] In the embodiment of the present invention, specifically, an arc-shaped notch 201 is formed inside the upper sealing frame 2. Limiting shaft rods 6 are rotatably connected to both ends of the arc-shaped notch 201. A light-blocking cloth 7 is wound around the outside of one of the limiting shaft rods 6. Winding pieces 601 are fixedly installed at both ends of the other limiting shaft rod 6. The end of the winding piece 601 is fixedly connected to the light-blocking cloth 7 for driving the light-blocking cloth 7 to move inside the arc-shaped notch 201;

[0051] In an embodiment of the present invention, specifically, when the vegetable seedlings do not require light, by rotating the limiting shaft rod 6, the winding piece 601 can be wound. At this time, the light-blocking cloth 7 is stretched and moves inside the arc-shaped notch 201 until the upper sealing frame 2 is blocked. When the vegetable seedlings require light, by reversing the limiting shaft rod 6, at this time, the limiting shaft rod 6 on the other side can wind the light-blocking cloth 7 through the return spring 602, thereby storing the light-blocking cloth 7;

[0052] In an embodiment of the present invention, specifically, a return spring 602 is sleeved on the end of the limiting shaft rod 6 around which the light-blocking cloth 7 is wound. A servo motor 8 is provided at the end of the limiting shaft rod 6 on the other side. The servo motor 8 is fixedly installed inside the upper sealing frame 2 and is used to drive the limiting shaft rod 6 to operate;

[0053] In an embodiment of the present invention, specifically, the servo motor 8 is an existing forward and reverse motor and is used to drive the corresponding limiting shaft rod 6 to rotate forward or reverse;

[0054] In an embodiment of the present invention, specifically, ventilation ducts 3 are fixedly installed on both sides inside the upper sealing frame 2. An arc-shaped blade 5 is rotatably connected inside one of the ventilation ducts 3. A drive motor 4 is fixedly installed on the inner side of the upper sealing frame 2 and is used to drive the arc-shaped blade 5 to rotate inside the corresponding ventilation duct 3;

[0055] In an embodiment of the present invention, specifically, filter sheets 301 are fixedly installed inside both of the ventilation ducts 3 on both sides;

[0056] In an embodiment of the present invention, specifically, the ventilation duct 3 is used to adjust the temperature inside the machine body 1. When the temperature inside the machine body 1 is too high, by rotating the drive motor 4, the arc-shaped blade 5 can be driven to operate, and the external air is conveyed into the machine body 1;

[0057] In an embodiment of the present invention, specifically, the arc-shaped blade 5 is an existing component, and a rotating shaft is sleeved inside it. A transmission belt is connected between the output end of the rotating shaft and the drive motor 4 for realizing the transmission operation;

[0058] Embodiment 2: Based on Embodiment 1, a method for raising vegetable seedlings, based on the above-mentioned seedling-raising device, specifically includes the following steps:

[0059] S1. Put the vegetable seedlings to be cultivated together with the soil into the seedling-raising tube 16, and then put the seedling-raising tube 16 into the corresponding slot. At this time, the seedling-raising tube 16 can be limited by the elastic filling member 1501. When the seedling-raising tube 16 is put into the slot, multiple conical expansion frames 1802 can be inserted into the seedling-raising tube 16 to expand the corresponding elastic sealing piece 1602;

[0060] S2. When watering the soil, by operating the transfer pump 12, water can be injected into the seedling-raising carrier box 10 until the liquid level exceeds the middle bearing plate 14, so that the water can immerse into the soil inside the seedling-raising cylinder 16 through the through holes 1401 and the conical expansion frame 1802. After watering is completed, open the pressure relief valve to lower the liquid level below the middle bearing plate 14;

[0061] S3. By operating the servo motor 8, the corresponding limit shaft rod 6 can be driven to rotate, and through the cooperation of the winding piece 601, the light-shielding cloth 7 can be driven to move inside the arc-shaped notch 201 to block the upper sealing frame 2, thereby being able to adjust the lighting time of the vegetable seedlings.

[0062] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0063] The above has described a specific embodiment of the present invention in detail, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the scope covered by the present invention.

Claims

1. A seedling raising device for growing vegetables, comprising a machine body (1), characterized in that: A top cover frame (2) is rotatably installed at the top of the machine body (1). A seedling cultivation carrier box (10) is fixedly installed inside the machine body (1). A middle carrier plate (14) is fixedly installed inside the seedling cultivation carrier box (10). A plurality of partition plates (15) are fixedly installed on the top of the middle carrier plate (14), and a plurality of slots are formed by the partition plates (15). Seedling cultivation cylinders (16) are inserted into the slots respectively. A plurality of support ring frames (18) are fixedly installed on the top of the middle carrier plate (14), and a plurality of support columns (1801) are fixedly installed on the top of the support ring frames (18). The support columns (1801) are in contact with the bottom of the corresponding seedling cultivation cylinders (16). A plurality of elastic sealing sheets (1602) are fixedly installed at the bottom of the seedling cultivation cylinders (16). A plurality of conical expansion frames (1802) are fixedly installed on the top of the support ring frames (18). When the seedling cultivation cylinders (16) are placed into the corresponding slots, the conical expansion frames (1802) can expand the elastic sealing sheets (1602). A plurality of through holes (1401) are symmetrically formed inside the middle carrier plate (14). A water pump (12) is connected to the outside of the seedling cultivation carrier box (10) for delivering water into the seedling cultivation carrier box (10). A temperature and humidity control module (13) is fixedly installed at the inner bottom of the machine body (1), and a temperature and humidity monitoring module (9) is fixedly installed at the inner top of the machine body (1).

2. The seedling raising device for growing vegetables according to claim 1, characterized in that: An elastic filling member (1501) is arranged between the seedling cultivation cylinder (16) and the corresponding slot. The elastic filling member (1501) is fixedly installed inside the corresponding slot. A rectangular plate (1601) is fixedly installed at the top of the seedling cultivation cylinder (16).

3. The seedling raising device for growing vegetables according to claim 1, wherein: A plurality of floating plates (17) are slidably installed inside the seedling cultivation carrier box (10). A plurality of dredging rods (1702) are fixedly installed on the top of the floating plates (17). The dredging rods (1702) are used for dredging the through holes (1401). Counterweight plates (1701) are fixedly installed on both sides of the bottom of the floating plates (17). A pressure relief valve is installed at the bottom of the seedling cultivation carrier box (10) for discharging the water inside.

4. The seedling raising device for growing vegetables according to claim 1, characterized in that: A cleaning pipeline (1101) is fixedly installed at the inner bottom of the seedling cultivation carrier box (10). A cleaning pump (11) is fixedly installed on the outside of the seedling cultivation carrier box (10). The cleaning pump (11) is communicated with the cleaning pipeline (1101).

5. The seedling raising device for growing vegetables according to claim 1, characterized in that: A control panel (101) is fixedly installed on the outside of the machine body (1).

6. The seedling raising device for growing vegetables according to claim 1, wherein: An arc-shaped notch (201) is formed inside the top cover frame (2). Limiting shaft rods (6) are rotatably connected to both ends of the arc-shaped notch (201). A light-blocking cloth (7) is wound around the outside of one of the limiting shaft rods (6). Winding pieces (601) are fixedly installed at both ends of the other limiting shaft rod (6). The end of the winding piece (601) is fixedly connected to the light-blocking cloth (7) for driving the light-blocking cloth (7) to move inside the arc-shaped notch (201).

7. The seedling raising device for growing vegetables according to claim 6, characterized in that: One end of the limit shaft rod (6) wound with the light-shielding cloth (7) is sleeved with a return spring (602). A servo motor (8) is provided at the end of the limit shaft rod (6) on the other side. The servo motor (8) is fixedly installed inside the upper sealing frame (2) and is used to drive the limit shaft rod (6) to operate.

8. The seedling raising device for growing vegetables according to claim 1, characterized in that: Ventilation ducts (3) are fixedly installed on both sides inside the upper sealing frame (2). An arc-shaped blade (5) is rotatably connected inside one of the ventilation ducts (3). A drive motor (4) is fixedly installed on the inner side of the upper sealing frame (2) and is used to drive the arc-shaped blade (5) to rotate inside the corresponding ventilation duct (3).

9. The seedling raising device for growing vegetables according to claim 8, wherein: Filter sheets (301) are fixedly installed inside the ventilation ducts (3) on both sides.

10. A seedling raising method for growing vegetables, based on the seedling raising device according to any one of claims 1-9, characterized in that: Specifically, it includes the following steps: S1. Put the vegetable seedlings to be cultivated together with the soil into the seedling-raising cylinder (16), and then put the seedling-raising cylinder (16) into the corresponding slot. At this time, the seedling-raising cylinder (16) can be limited by the elastic filling member (1501). When the seedling-raising cylinder (16) is put into the slot, multiple conical expansion frames (1802) can be inserted into the seedling-raising cylinder (16) to expand the corresponding elastic sealing sheet (1602). S2. When watering the soil, by operating the delivery pump (12), water can be injected into the seedling-raising carrier box (10) until the liquid level exceeds the middle carrier plate (14), so that the water can penetrate into the soil inside the seedling-raising cylinder (16) through the through holes (1401) and the conical expansion frames (1802). After watering is completed, open the pressure relief valve (10) to lower the liquid level below the middle carrier plate (14). S3. By operating the servo motor (8), the corresponding limit shaft rod (6) can be driven to rotate, and with the cooperation of the winding sheet (601), the light-shielding cloth (7) can be driven to move inside the arc-shaped notch (201) to cover the upper sealing frame (2), thereby adjusting the lighting time of the vegetable seedlings.

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