Greenhouse seedling raising multi-layer seedbed

Abstract

This invention relates to the field of seedbed technology, and discloses a multi-layer greenhouse seedbed, including a support frame for supporting seedling trays or adjustable tray components. Adjustable tray components are inserted into the top or bottom of the support frame. When inserted into the top of the support frame, they support the seedling trays and facilitate tidal irrigation; when inserted into the bottom of the support frame, the adjustable tray components are equipped with nozzles for spraying irrigation onto the seedling trays on the next lower layer of the support frame. Growers can switch between tidal irrigation and spray irrigation seedbeds according to real-time needs, adjusting the number of tidal irrigation and spray irrigation seedbeds, eliminating the need to store large quantities of tidal irrigation or spray irrigation seedbeds in warehouses, reducing storage space and planting costs. Excess water and fertilizer are collected centrally at the bottom collection funnel, and can be reused after secondary filtration, achieving water and fertilizer recycling and reducing water and fertilizer waste by 30%-40%, thus improving the water and fertilizer recycling rate.

Description

Technical Field

[0001] This invention relates to the field of seedbed technology, specifically a multi-layer seedbed for greenhouse seedling cultivation. Background Technology

[0002] Greenhouse seedling cultivation is a crucial link in the agricultural planting industry chain, requiring a stable growth environment for crop seedlings, including temperature, humidity, and light. Its seedling efficiency and space utilization directly impact agricultural production benefits. Single-layer seedbeds occupy a vast area, limiting the total number of seedlings that can be cultivated in situations with limited land resources or greenhouse space. Therefore, multi-layer seedbeds have emerged. Seedbeds are also categorized into tidal irrigation seedbeds and sprinkler irrigation seedbeds.

[0003] The existing equipment has the following disadvantages: In the existing technology, whether it is a single-layer or multi-layer seedbed, it can only be fixed as a tide irrigation seedbed or a spray irrigation seedbed. This results in a large number of tide irrigation seedbeds and spray irrigation seedbeds being stored in the warehouse for timely use when needed, which increases storage space and planting costs. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-layer seedbed for greenhouse seedling cultivation to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-layer seedbed for greenhouse seedling cultivation, comprising a supporting frame, an adjustable tray, and a movable bed base; The support bed frame is provided in several units to support seedling trays or adjustable tray components. Several support bed frames are built together vertically layer by layer to obtain a multi-layer bed frame. The adjustable tray is used to be inserted into the top or bottom of the support bed frame. When inserted into the top of the support bed frame, it is used to support the seedling tray and for tidal irrigation. When inserted into the bottom of the support bed frame, the adjustable tray is equipped with a nozzle for spraying irrigation onto the seedling trays on the next layer of the support bed frame. The bottommost support bed frame of the movable bed base is located on the movable bed base and is used to drive the support bed frame to shift to one side.

[0006] In one or more embodiments, the adjustable tray includes a tray box, the tray box having a water-containing cavity inside, and a plurality of pipes at the end of the tray box being connected to the water-containing cavity; The tray box is provided with an inwardly recessed seedling tray, which includes a protrusion and a recess on its bottom surface. The protrusion and the recess are arranged alternately. A drain outlet is provided on the recess near the pipe end. The drain outlet is provided with a sealing cap to control the opening and closing of the drain outlet. The recess is provided with several through holes for tidal irrigation of the seedling tray.

[0007] In one or more embodiments, the supporting bed frame includes a supporting outer frame, a supporting inner frame, and a mesh panel; the supporting outer frame, located at the bottom of the multi-layer bed frame, is mounted on a movable bed seat, and positioning holes are symmetrically provided at both ends of the supporting outer frame; the two ends of the supporting inner frame are respectively located in the positioning holes at both ends, and the mesh panel is laid on the supporting inner frame; in the vertical direction, the positioning holes are located in the middle of the supporting outer frame.

[0008] In one or more embodiments, the supporting bed frame further includes a plurality of telescopic members, wherein in two adjacent supporting outer frames, the lower supporting outer frame is connected to the upper supporting outer frame through the telescopic members, for controlling the spacing between the two adjacent supporting outer frames.

[0009] In one or more embodiments, the supporting bed frame further includes two insertion holes one and two insertion holes two, the two insertion holes one being symmetrically arranged at both ends of the supporting outer frame, and the two insertion holes two being symmetrically arranged at both ends of the supporting outer frame; and on one of the supporting outer frames, the insertion holes one is located above the positioning hole, and the insertion holes two are located below the positioning hole; The first insertion hole is used to place an adjustable tray with the seedling tray opening facing upwards; the second insertion hole is used to place an adjustable tray with the seedling tray opening facing downwards.

[0010] In one or more embodiments, the supporting outer frame is provided with a connected water inlet and a collecting funnel at corresponding locations; the bottom end of the collecting funnel is provided with a connected telescopic pipe; in two adjacent supporting outer frames, the water outlet end of the telescopic pipe of the previous supporting outer frame extends into the collecting funnel of the next supporting outer frame.

[0011] In one or more embodiments, the side of the tray box away from the seedling tray is provided with a drainage surface; when the opening of the seedling tray box is facing downwards and located in the second insertion hole, the water flows through the water collection port, the water inlet and the opening of the collection funnel on the drainage surface.

[0012] In one or more embodiments, the movable bed seat includes a top plate and symmetrically placed support legs, the support legs are mounted on the ground, the support legs are provided with sliders and a plurality of slide rods, the top plate is located on the sliders, the slide rods are located in the gap between the top plate and the support legs, and the support legs include partitions at both ends for restricting the slide rods on the support legs; The two ends of the slide rod are fitted with positioning rings, the outer diameter of which is larger than the outer diameter of the slide rod; the support leg is provided with symmetrical track grooves, the positioning rings slide in the track grooves, and one end of the slide rod is provided with a handle for driving the slide rod to roll on the support leg, and pushing the slider to translate on the support leg when rolling.

[0013] In one or more embodiments, the supporting inner frame includes a plurality of crossbars and two connecting rods; the plurality of crossbars are arranged side by side on the supporting outer frame, wherein the two outermost crossbars are located in positioning holes at both ends, and adjacent crossbars are connected by two scissor-shaped connecting rods.

[0014] In one or more embodiments, in a multi-layer bed frame, each of the supporting outer frames except for the bottommost one is equipped with a plurality of plant supplement lights, and the plant supplement lights are located inside the telescopic members, and the plant supplement lights move along the long side or the wide side of the supporting outer frame. Compared with the prior art, the beneficial effects of the present invention are: This invention includes a support frame for supporting seedling trays or adjustable tray components. Adjustable tray components are inserted into the top or bottom of the support frame. When inserted into the top of the support frame, they support the seedling trays and facilitate tidal irrigation. When inserted into the bottom of the support frame, the adjustable tray components are equipped with nozzles for spraying irrigation onto the seedling trays on the next lower level of the support frame. Growers can switch between tidal irrigation and spray irrigation seedbeds according to real-time needs, adjusting the number of tidal irrigation and spray irrigation seedbeds. This eliminates the need to store large quantities of tidal irrigation or spray irrigation seedbeds in warehouses, reducing storage space and planting costs. Excess water and fertilizer are collected centrally at the bottom collection funnel, and can be reused after secondary filtration, achieving water and fertilizer recycling and reducing water and fertilizer waste by 30%-40%, thus improving the water and fertilizer recycling rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure from below in one embodiment of the present invention; Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure of a movable bed frame in one embodiment of the present invention; Figure 5 for Figure 4 Enlarged view at point B in the middle; Figure 6 This is a top view of the structure of the seedling tray box with the opening facing upwards in one embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the tray box with the seedling tray opening facing downwards, according to an embodiment of the present invention; Figure 8 This is a top view of the structure of the seedling tray box with the opening facing downwards in one embodiment of the present invention; Figure 9 This is a cross-sectional view of a pallet box according to an embodiment of the present invention; In the picture: 1. Supporting bed frame; 2. Adjustable tray; 4. Sprinkler head; 5. Movable bed base; 6. Plant grow light; 11. Support the outer frame; 12. Supporting internal frame; 121. Crossbar; 122. Connecting rod; 13. Mesh panel; 14. Telescopic component; 15. Positioning hole; 17. Insertion hole one; 18. Insertion hole one; 21. Tray box; 22. Water-containing cavity; 23. Pipe; 24. Seedling tray; 241. Protrusion; 242. Recess; 25. Drain outlet; 26. Sealing cap; 27. Through hole; 30. Water inlet; 31. Collection funnel; 32. Expansion pipe; 33. Drainage surface; 51. Top plate; 52. Support leg; 53. Slider; 54. Slide rod; 55. Partition; 56. Handle; 58. Positioning ring; 59. Track groove. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] See Figures 1-9 The present invention provides a technical solution: a multi-layer seedbed for greenhouse seedling cultivation, used to place seedling trays, including a supporting bed frame 1, an adjustable tray component 2, and a movable bed base 5; The support bed frame 1 is provided in several units to support the seedling tray or adjustable tray 2. Several support bed frames 1 are built together vertically layer by layer to obtain a multi-layer bed frame. The adjustable tray 2 is used to insert into the top or bottom of the support bed frame 1. When inserted into the top of the support bed frame 1, it is used to support the seedling tray and for tidal irrigation. When inserted into the bottom of the support bed frame 1, the adjustable tray 2 is equipped with a nozzle 4 for spraying irrigation onto the seedling tray on the next layer of support bed frame 1. The bottommost support bed frame 1 of the movable bed base 5 is located on the movable bed base 5 and is used to drive the support bed frame 1 to shift to one side.

[0018] It should be noted that the seedling trays contain seedlings, and the adjustable tray 2 has two usage methods: upright and inverted. When upright, it is placed on top of the support frame 1 as a tide irrigation seedbed, with the seedling tray resting on the adjustable tray 2. When inverted, it is placed at the bottom of the support frame 1 as a spray irrigation seedbed, with the seedling tray resting on the support frame 1. The adjustable tray 2 is not placed upright on the bottom layer of the multi-layered seedbed. During use, growers can switch between tide irrigation and spray irrigation seedbeds according to real-time needs, adjusting the number of tide irrigation and spray irrigation seedbeds. This eliminates the need to store large quantities of tide irrigation or spray irrigation seedbeds in the warehouse, reducing storage space and planting costs.

[0019] In one embodiment, the adjustable tray component 2 includes a tray box 21, the tray box 21 is provided with a water-containing cavity 22, and the end of the tray box 21 is provided with a plurality of pipes 23, the pipes 23 being connected to the water-containing cavity 22; The tray box 21 is provided with an inwardly recessed seedling tray 24. The seedling tray 24 includes a protrusion 241 and a recess 242 on its bottom surface. The protrusion 241 and the recess 242 are alternately arranged. A drain outlet 25 is provided on the recess 242 near the pipe 23. A sealing cap 26 is provided on the drain outlet 25 to control the opening and closing of the drain outlet 25. A plurality of through holes 27 are provided on the recess 242 for tidal irrigation of the seedling tray.

[0020] This design is for reference. Figure 1 and Figure 5-9 Tidal irrigation of the seedbed: One end of pipe 23 is connected to an external water supply and drainage device, and the other end is connected to the water chamber 22 inside the tray box 21. When water is supplied, the water flows through the water supply device, pipe 23, and through hole 27, and gathers in the seedling tray 24 to irrigate the seedling tray. When draining, part of the water in the seedling tray 24 is discharged through through hole 27, pipe 23, and drainage device, and the other part is discharged through drain outlet 25, pipe 23, and drainage device. Spray irrigation of the seedbed: The drain outlet 25 is closed with the sealing cover 26. One end of pipe 23 is connected to an external water supply device, and the other end is connected to the water chamber 22 inside the tray box 21. In the water supply state only, the water flows through the water supply device, pipe 23, through hole 27, and nozzle 4. The water at nozzle 4 is sprayed downward in a mist and sprayed onto the seedling tray.

[0021] In one embodiment, the supporting bed frame 1 includes a supporting outer frame 11, a supporting inner frame 12, and a mesh panel 13; the supporting outer frame 11, located at the bottom of the multi-layer bed frame, is mounted on the movable bed base 5, and positioning holes 15 are symmetrically provided at both ends of the supporting outer frame 11. The two ends of the supporting inner frame 12 are respectively located in the positioning holes 15 at both ends, and the mesh panel 13 is laid on the supporting inner frame 12; in the vertical direction, the positioning holes 15 are located in the middle of the supporting outer frame 11.

[0022] This design is for reference. Figure 1-2 and Figure 4 Spraying irrigation of the seedbed: The seedling trays are placed on the mesh 13, and the inner support frame 12 supports the mesh 13 to prevent the seedling trays from falling. The position of the inner support frame 12 is restricted by the positioning holes 15, so that the inner support frame 12 is always located in the middle of the outer support frame 11, leaving space for the adjustable tray pieces 2 to be placed upright and inverted. By moving the bed base 5, the position of the outer support frame 11 connected to it can be moved left and right, thereby changing the position of the entire multi-layer bed frame. In the seedling nursery, multiple multi-layer bed frames are usually placed side by side. By moving the bed base 5, the distance between two adjacent multi-layer bed frames can be changed, thereby widening the distance when it is necessary for people to walk between the two multi-layer bed frames, and narrowing the distance to the minimum when it is not necessary. This reduces the floor space occupied by the multi-layer bed frames in the seedling nursery.

[0023] In one embodiment, the supporting bed frame 1 further includes a plurality of telescopic members 14. Among two adjacent supporting outer frames 11, the lower supporting outer frame 11 is connected to the upper supporting outer frame 11 through the telescopic members 14, which is used to control the spacing between the two adjacent supporting outer frames 11.

[0024] This design is for reference. Figure 1 The telescopic component 14 is an electric push rod. By extending the electric push rod, the distance between the two adjacent support frames 11 can be increased to accommodate the needs of seedlings at different growth stages and heights. By retracting the electric push rod, the distance can be reduced, saving seedling space.

[0025] In one embodiment, the supporting bed frame 1 further includes two insertion holes 17 and two insertion holes 18. The two insertion holes 17 are symmetrically arranged at both ends of the supporting outer frame 11, and the two insertion holes 18 are symmetrically arranged at both ends of the supporting outer frame 11. On one of the supporting outer frames 11, the insertion holes 17 are located above the positioning holes 15, and the insertion holes 18 are located below the positioning holes 15. The first insertion hole 17 is used to place the adjustable tray 2 with the opening of the seedling tray 24 facing upward; the second insertion hole 18 is used to place the adjustable tray 2 with the opening of the seedling tray 24 facing downward.

[0026] This design is for reference. Figure 1-5 By reserving space for the upright and reverse placement of the adjustable tray 2 through the insertion hole 17 and the insertion block 2, the support frame 1 can place either one adjustable tray 2 or two adjustable tray 2 at the same time. For example, the top support frame 1 of the sprinkler irrigation seedbed can also place one adjustable tray 2 upright in the insertion hole 17 for local tidal irrigation; thus, a mixed use of sprinkler irrigation seedbed and tidal irrigation seedbed can be achieved.

[0027] In one embodiment, the supporting outer frame 11 is provided with a connected water inlet 30 and a collecting funnel 31 at corresponding locations; the bottom end of the collecting funnel 31 is provided with a connected telescopic pipe 32; in two adjacent supporting outer frames 11, the water outlet end of the telescopic pipe 32 of the previous supporting outer frame 11 extends into the collecting funnel 31 of the next supporting outer frame 11.

[0028] This design is for reference. Figure 1 and Figure 7-8 In the sprinkler irrigation seedbed, water is sometimes sprayed and fertilizer is sometimes sprayed. The sprayed water will collect on the back a of the adjustable tray 2 of the next layer, and then flow along the adjustable tray 2 to the water inlet 30, and then into the collection funnel 31. The collection funnels of the upper layer will collect the collected water into the collection funnels of the lower layer. Finally, the water is collected at the bottom collection funnel. The excess water and fertilizer collected can be filtered twice and reused, realizing the recycling of water and fertilizer, reducing water and fertilizer waste by 30%-40%.

[0029] In one embodiment, the tray box 21 has a drainage surface 33 on the side away from the seedling tray 24; when the opening of the seedling tray 24 in the tray box 21 is facing downward and located in the insertion hole 18, the water flows through the opening of the water collection port, the water inlet 30 and the collection funnel 31 on the drainage surface 33.

[0030] This design is for reference. Figure 8 The drainage surface 33 is located on the back a of the adjustable tray 2. Its function is to concentrate the water flow in one place, prevent the water from flowing everywhere, reduce the waste of water and fertilizer, and improve the recycling rate of water and fertilizer.

[0031] In one embodiment, the movable bed seat 5 includes a top plate 51 and symmetrically placed support legs 52. The support legs 52 are mounted on the ground. The support legs 52 are provided with sliders 53 and a plurality of sliding rods 54. The top plate 51 is located on the sliders 53. The sliding rods 54 are located in the gap between the top plate 51 and the support legs 52. The support legs 52 include partitions 55 at both ends for restricting the sliding rods 54 on the support legs 52. The two ends of the slide rod 54 are fitted with positioning rings 58, the outer diameter of the positioning rings 58 being larger than the outer diameter of the slide rod 54; the support leg 52 is provided with symmetrical track grooves 59, the positioning rings 58 slide within the track grooves 59, and one end of the slide rod 54 is provided with a handle 56, which is used to drive the slide rod 54 to roll on the support leg 52, and push the slider 53 to translate on the support leg 52 when rolling.

[0032] This design is for reference. Figure 4-5 The movable bed frame 5 is existing technology. Support legs 52 provide support and are preferably bolted to the ground. To move the multi-layer seedbed to the left, the handle 56 is turned to the left of the support leg 52. The handle 56 rotates the connected slide rod 54, causing the positioning ring 58 to rotate to the left along the track groove 59. After the slide rod 54 contacts the slider 53, it moves the slider 53 synchronously. The slider 53 moves the top plate 51 synchronously, and the top plate 51 moves the multi-layer seedbed synchronously, thus changing the horizontal position of the multi-layer seedbed. When the slide rod 54 is restricted by the left-side partition 55, the handle 56 cannot be turned further, reaching the maximum leftward movement limit, thus protecting the support frame 1. Similarly, the multi-layer seedbed can be moved to the right.

[0033] In one embodiment, the supporting inner frame 12 includes a plurality of crossbars 121 and two connecting rods 122; the plurality of crossbars 121 are arranged side by side on the supporting outer frame 11, wherein the two outermost crossbars 121 are respectively located in the positioning holes 15 at both ends, and two adjacent crossbars 121 are connected by two scissor-shaped connecting rods 122.

[0034] This design is for reference. Figure 2 and Figure 4 During use, the connection between the two connecting rods 122 is bolted, and the connection between the end of the connecting rod 122 and the crossbar 121 is bolted. This allows for easy replacement of several crossbars 121 and two connecting rods 122 individually, reducing maintenance costs.

[0035] In one embodiment, in the multi-layer bed frame, all of the supporting outer frames 11 except the bottom one are provided with a plurality of plant supplement lights 6, and the plant supplement lights 6 are located inside the telescopic member 14, and the plant supplement lights 6 move along the long side or the wide side of the supporting outer frame 11.

[0036] This design is for reference. Figure 2Several plant grow lights 6 are installed on the roof of the seedling nursery to illuminate the seedling trays on the top support frame 1 of the multi-layered seedling bed. Except for the top support frame 1, in adjacent support frames 1, the upper plant grow lights 6 supplement the light for the lower plants, providing illumination for the seedlings. The plant grow lights 6 can move along the long side of the outer support frame 11. Before spraying liquid, the grow lights are moved to one end of the support frame 1 for centralized collection, preventing the plant grow lights 6 from blocking the water mist and improving the uniformity of water mist spraying. This also reduces the watering time of the plant grow lights 6 and protects them.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0038] It should be noted that if the embodiments of the invention involve directional indicators such as up and down, the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the figure. If the specific posture changes, the directional indicators will also change accordingly.

[0039] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Additionally, if the embodiments of the invention involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, "multiple" refers to two or more.

[0040] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the invention.

Claims

1. A multi-layer seedbed for greenhouse seedling cultivation, used for placing seedling trays, characterized in that, Includes a supporting bed frame (1), an adjustable tray (2), and a movable bed seat (5); The support bed frame (1) is provided in several units to support the seedling tray or adjustable tray (2). Several support bed frames (1) are built together vertically layer by layer to obtain a multi-layer bed frame. The adjustable tray (2) is used to insert into the top or bottom of the support bed frame (1). When inserted into the top of the support bed frame (1), it is used to support the seedling tray and for tidal irrigation. When inserted into the bottom of the support bed frame (1), the adjustable tray (2) is equipped with a nozzle (4) for spraying irrigation onto the seedling tray on the next layer of support bed frame (1). The bottommost support bed frame (1) of the movable bed base (5) is located on the movable bed base (5) and is used to drive the support bed frame (1) to shift to one side; The adjustable pallet component (2) includes a pallet box (21), the pallet box (21) is provided with a water-containing cavity (22), and the end of the pallet box (21) is provided with a plurality of pipes (23), the pipes (23) being connected to the water-containing cavity (22); The tray box (21) is provided with an inwardly recessed seedling tray (24). The seedling tray (24) includes a protrusion (241) and a recess (242) on its bottom surface. The protrusion (241) and the recess (242) are alternately arranged. A drain outlet (25) is provided on the recess (242) near the pipe (23). A sealing cap (26) is provided on the drain outlet (25) to control the opening and closing of the drain outlet (25). Several through holes (27) are provided on the recess (242) for tidal irrigation of the seedling tray. The supporting bed frame (1) includes a supporting outer frame (11), a supporting inner frame (12), and a mesh (13); the supporting outer frame (11) located at the bottom of the multi-layer bed frame is set on the movable bed base (5), and the two ends of the supporting outer frame (11) are symmetrically provided with positioning holes (15). The two ends of the supporting inner frame (12) are respectively located in the positioning holes (15) at both ends, and the mesh (13) is laid on the supporting inner frame (12); in the vertical direction, the positioning holes (15) are located in the middle of the supporting outer frame (11); The supporting bed frame (1) also includes two insertion holes one (17) and two insertion holes two (18). The two insertion holes one (17) are symmetrically arranged at both ends of the supporting outer frame (11), and the two insertion holes two (18) are symmetrically arranged at both ends of the supporting outer frame (11). On one of the supporting outer frames (11), the insertion holes one (17) are located above the positioning hole (15), and the insertion holes two (18) are located below the positioning hole (15). The first insertion hole (17) is used to place the adjustable tray (2) with the opening of the seedling tray (24) facing upward; the second insertion hole (18) is used to place the adjustable tray (2) with the opening of the seedling tray (24) facing downward.

2. The multi-layer seedbed for greenhouse seedling cultivation according to claim 1, characterized in that, The supporting bed frame (1) also includes several telescopic components (14). In two adjacent supporting outer frames (11), the lower supporting outer frame (11) is connected to the upper supporting outer frame (11) through the telescopic components (14) to control the spacing between the two adjacent supporting outer frames (11).

3. The multi-layer seedbed for greenhouse seedling cultivation according to claim 1, characterized in that, The supporting outer frame (11) is provided with a connected water inlet (30) and a flow collection funnel (31) at the corresponding location; the bottom end of the flow collection funnel (31) is provided with a connected telescopic pipe (32); in two adjacent supporting outer frames (11), the water outlet end of the telescopic pipe (32) of the previous supporting outer frame (11) extends into the flow collection funnel (31) of the next supporting outer frame (11).

4. The multi-layer seedbed for greenhouse seedling cultivation according to claim 3, characterized in that, The tray box (21) has a drainage surface (33) on the side away from the seedling trough (24); when the opening of the seedling trough (24) of the tray box (21) is facing downward and located in the second insertion hole (18), the water flows through the openings of the water flow collection port, the water inlet (30) and the collection funnel (31) of the drainage surface (33).

5. The multi-layer seedbed for greenhouse seedling cultivation according to claim 4, characterized in that, The movable bed seat (5) includes a top plate (51) and symmetrically placed support legs (52). The support legs (52) are installed on the ground. The support legs (52) are provided with sliders (53) and several sliding rods (54). The top plate (51) is located on the sliders (53). The sliding rods (54) are located in the gap between the top plate (51) and the support legs (52). The support legs (52) include partitions (55) at both ends for restricting the sliding rods (54) on the support legs (52). The sliding rod (54) has positioning rings (58) fitted at both ends. The outer diameter of the positioning rings (58) is larger than the outer diameter of the sliding rod (54). The support leg (52) has symmetrical track grooves (59). The positioning rings (58) slide in the track grooves (59). One end of the sliding rod (54) is provided with a handle (56) for driving the sliding rod (54) to roll on the support leg (52). When rolling, the slider (53) is pushed to move horizontally on the support leg (52).

6. The multi-layer seedbed for greenhouse seedling cultivation according to claim 1, characterized in that, The supporting inner frame (12) includes several crossbars (121) and two connecting rods (122); the several crossbars (121) are arranged side by side on the supporting outer frame (11), wherein the two outermost crossbars (121) are located in the positioning holes (15) at both ends respectively, and the two adjacent crossbars (121) are connected by two scissor-cross connecting rods (122).

7. The multi-layer seedbed for greenhouse seedling cultivation according to claim 2, characterized in that, In the multi-layer bed frame, except for the bottom support frame (11), each support frame (11) is provided with a number of plant supplement lights (6), and the plant supplement lights (6) are located inside the telescopic member (14). The plant supplement lights (6) move along the long side or the wide side of the support frame (11).

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