Edible mushroom planting frame

By designing a convenient moving mechanism and a spraying system on the edible mushroom cultivation rack, the problems of complex height adjustment of the cultivation trough and low irrigation efficiency are solved, realizing convenient adjustment of the cultivation trough and automated irrigation, thus improving the practicality and resource utilization efficiency of the cultivation rack.

CN223885867UActive Publication Date: 2026-02-10ANKANG LIDING ZHULAN AGRICULTURAL DEVELOPMENT CO LTD
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Patent Information

Application Number
CN202520392086.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-07
Publication Date
2026-02-10
Estimated Expiration
2035-03-07

AI Technical Summary

Technical Problem

Existing edible mushroom cultivation racks have complex processes for fixing or adjusting the height of the planting troughs, which wastes manpower and reduces practicality, and lack an effective irrigation system.

Method used

Design an edible mushroom cultivation rack that uses through grooves and slides on the support plate combined with sliding channels of connecting blocks and side slide plates to enable convenient movement and locking of the cultivation trough. Equipped with a servo motor-driven sprinkler system and humidity sensor, it achieves automated irrigation and water recycling.

Benefits of technology

The height of the planting trough can be easily adjusted and locked, improving the practicality of the planting rack. The automated spraying system also improves the efficiency of edible fungi cultivation and the utilization rate of water resources.

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Abstract

The utility model relates to the technical field of edible mushroom planting, and discloses an edible mushroom planting frame which comprises a convenient moving mechanism, a spraying mechanism and a controller, the spraying mechanism is arranged on the end face of one side of the convenient moving mechanism, the controller is arranged at one end of the convenient moving mechanism, and the convenient moving mechanism comprises two supporting plates. And through grooves are formed in the middles of the interiors of the two supporting plates. According to the planting frame, the through grooves and the sliding grooves in the supporting plates serve as sliding channels of the planting grooves, the connecting blocks and the side sliding plates, firstly, the height of the planting grooves is adjusted according to the size of edible mushrooms, plug pins are inserted into second fixing holes and corresponding first fixing holes, primary fixing is completed, then sliding rods on the connecting rods are pressed, clamping blocks enter locking holes, and the planting grooves are fixed. Adjusting rings are rotated to enable clamping blocks to be embedded into grooves, sliding rods are loosened, the clamping blocks are tightly attached to the grooves through spring tension, secondary locking is completed, the planting grooves can be conveniently moved through the design, and the practicability of the planting frame is improved.
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Description

Technical Field

[0001] This utility model relates to the field of edible fungi cultivation technology, and in particular to an edible fungi cultivation rack. Background Technology

[0002] Edible fungi refer to fungi that can be consumed by humans, mainly including mushrooms, shiitake mushrooms, enoki mushrooms, and oyster mushrooms. They are rich in protein, vitamins, minerals, and dietary fiber, and have high nutritional and medicinal value. Edible fungi typically grow on decaying wood, soil, or specific culture media, and reproduce through spores. They have a delicious flavor and unique texture, and are widely used in cooking and food processing.

[0003] There are many types of edible fungi, and the sizes of different edible fungi species vary. Edible fungi cultivation racks are needed in the process of cultivating edible fungi, and the height of multiple planting troughs needs to be adjusted to adapt to the growth conditions of different fungi species. However, the height of the planting troughs in most planting racks is fixed, and some planting racks with adjustable planting trough heights require the disassembly of a large number of parts during the adjustment process, which wastes a lot of manpower and time and reduces the practicality of edible fungi cultivation racks.

[0004] Therefore, those skilled in the art have provided an edible mushroom cultivation rack to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an edible mushroom cultivation rack. The rack utilizes through slots and sliding grooves on a support plate as sliding channels for multiple cultivation troughs, connecting blocks, and side slides. After determining the height of the cultivation troughs according to the size of different edible mushrooms, the pins are aligned with the second fixing hole and the corresponding first fixing hole and inserted simultaneously, thus fixing the cultivation troughs initially. Then, pressing the sliding rod connected to the spring on the connecting rod causes the locking block at one end of the sliding rod to enter the locking hole. Next, rotating the adjusting ring fixedly connected to the locking block causes the locking block to engage with the groove in the adjusting ring. Finally, releasing the sliding rod utilizes the spring tension to tightly engage the locking block with the groove, thus completing the secondary locking of the cultivation troughs. This enables convenient movement of the cultivation troughs and improves the practicality of the cultivation rack.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A mushroom cultivation rack includes a convenient moving mechanism, a spraying mechanism, and a controller. The convenient moving mechanism has a spraying mechanism on one side and a controller on one end. The convenient moving mechanism includes two support plates, each with a through groove in its center. Each support plate has multiple first fixing holes in its center on one side. Each support plate has sliding grooves on both sides of its one side. A cover plate is provided at the top of each support plate. Multiple planting troughs are slidably connected to the outer walls of each through groove. Connecting blocks are fixedly connected to both ends of each planting trough. Two connecting blocks are fixedly connected to one end of each connecting block. The side slide plate has a second fixing hole at both ends, a slide bar fixedly connected to one side end face of each side slide plate, a locking hole in the middle of one side end face of each connecting block, grooves on both sides of the interior of each locking hole, a pin slidably connected inside each of the second fixing holes, a connecting rod fixedly connected to one end of each pair of pins, a through tube fixedly connected to the middle of the interior of each connecting rod, a slide rod slidably connected to the middle of the interior of each through tube, a spring sleeved on the upper end of the outer wall of each slide rod, an adjusting ring rotatably connected to one end of each slide rod, and a locking block fixedly connected to one end of each adjusting ring.

[0008] Through the above technical solution, the planting rack uses the through grooves and sliding grooves opened on the support plate as sliding channels for multiple planting troughs, as well as the connecting blocks and side slides set on them. After determining the height position of the planting trough according to the different sizes of edible fungi, the pin is aligned with the second fixing hole and the first fixing hole corresponding to the second fixing hole and inserted at the same time, thereby completing the first fixing of the planting trough. Then, the sliding rod connected to the spring on the connecting rod is pressed so that the locking block at one end of the sliding rod enters the locking hole. Then, the adjusting ring fixedly connected to the locking block is rotated so that the locking block is engaged with the groove in the adjusting ring. Finally, the sliding rod is released and the spring tension is used to tightly fit the locking block with the groove, thereby completing the second locking of the planting trough. This realizes the convenient movement of the planting trough position and improves the practicality of the planting rack.

[0009] Furthermore, the spraying mechanism includes a pressure plate, a water collection tank slidably connected to the center of the pressure plate, a fixed frame on one side of the upper end face of the pressure plate, a servo motor in the center of the fixed frame, a threaded rod fixedly connected to the output end of the servo motor, a slider threadedly connected to the outer wall of the threaded rod, extension rods fixedly connected to both ends of the slider, a nozzle in the center of the two extension rods, a slide bar slidably connected to one end face of the slider, a SYS-LFDR-100W humidity sensor in the center of the center of the multiple planting troughs, two water pipes on one side of the lower end face of the cover plate and one side of the upper end face of the pressure plate, and multiple flexible hoses on one side of the outer wall of the two water pipes;

[0010] Through the above technical solution, the planting rack is driven by a servo motor to rotate a threaded rod in both directions. The rotation of the threaded rod causes the slider to slide and rise on the slide bar. There are five planting troughs in total, and each planting trough is equipped with a SYS-LFDR-100W humidity sensor. The planting troughs are numbered in the order of 1 to 5. During daily cultivation, when one or more SYS-LFDR-100W humidity sensors in one of the planting troughs detect that the humidity is too low, the PLC program will push the abnormal indicator corresponding to the number to the display screen of the controller. When the staff finds the problem, they can control the slider and its nozzle to spray the designated planting trough according to the abnormal indicator number prompt by operating the operation button. The hose connected to the planting trough can seep the water overflowing from the spray through the water pipe into the water collection tank inside the pressure plate for water recycling, realizing the irrigation of edible fungi and improving the practicality of the device.

[0011] Furthermore, the controller includes a display screen, and a plurality of operation buttons are provided on the upper surface of the controller;

[0012] The above technical solution makes it easy for staff to control the spraying mechanism using the controller and its components.

[0013] Furthermore, a sliding rod is fixedly connected to the upper end of the spring, and a through pipe is fixedly connected to the lower end of the spring;

[0014] Through the above technical solution, this setting enables the slide bar to perform subsequent locking operations by utilizing the extension and contraction of the spring.

[0015] Furthermore, the diameter of the first fixing hole is the same as the diameter of the second fixing hole;

[0016] The above technical solution enables the pins to firmly fix the planting trough to the support plate.

[0017] Furthermore, the spraying direction of the multiple nozzles is biased towards the lower part of the planting rack, and the spraying range of the multiple nozzles is smaller than the planting range of the planting trough.

[0018] The above technical solution ensures that the water sprayed from the nozzles will not be wasted by spraying large amounts of water out of the planting trough.

[0019] Furthermore, flexible hoses are provided at both ends of one side of each of the multiple planting troughs;

[0020] Through the above technical solution, this setup allows excess overflowing water to be transported through a flexible hose to the inlet pipe and ultimately into the collection tank.

[0021] Furthermore, the lower ends of both water pipes are fixedly connected to the inner center of the pressure plate, and the water collection tank is connected to the water pipes;

[0022] The above technical solution allows excess water to be collected in a water collection tank for the next spraying.

[0023] This utility model has the following beneficial effects:

[0024] 1. This utility model proposes an edible mushroom cultivation rack. The cultivation rack uses through grooves and sliding grooves on the support plate as sliding channels for multiple cultivation troughs, connecting blocks, and side slides. After determining the height of the cultivation trough according to the size of different edible mushrooms, the pins are aligned with the second fixing hole and the corresponding first fixing hole and inserted together to fix the cultivation trough for the first time. Then, the sliding rod connected to the spring on the connecting rod is pressed so that the locking block at one end of the sliding rod enters the locking hole. Then, the adjusting ring fixedly connected to the locking block is rotated so that the locking block fits into the groove in the adjusting ring. Finally, the sliding rod is released and the spring tension is used to tightly fit the locking block into the groove, thereby completing the secondary locking of the cultivation trough. This realizes convenient movement of the cultivation trough position and improves the practicality of the cultivation rack.

[0025] 2. This utility model proposes an edible mushroom cultivation rack. The cultivation rack is driven by a servo motor to rotate a threaded rod in both directions. The rotation of the threaded rod causes a slider to slide and rise on a slide bar. There are five cultivation troughs, each equipped with a SYS-LFDR-100W humidity sensor, and the cultivation troughs are numbered sequentially from 1 to 5. During daily cultivation, when one or more SYS-LFDR-100W humidity sensors in one of the cultivation troughs detect that the humidity is too low, the PLC program pushes the corresponding abnormal indicator to the display screen of the controller. When the staff discovers the problem, they can control the slider and its nozzle to spray the designated cultivation trough according to the abnormal indicator number prompt through the operation button. The hose connected to the cultivation trough can allow the water overflowing from the spray to seep down through the water pipe into the water collection tank inside the pressure plate for water recycling, realizing the irrigation of edible mushrooms and improving the practicality of the device. Attached Figure Description

[0026] Figure 1 This is an isometric view of an edible mushroom cultivation rack proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of a servo motor for an edible mushroom cultivation rack proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the planting trough of an edible mushroom cultivation rack proposed in this utility model;

[0029] Figure 4 This is an exploded view of the card block structure of an edible mushroom cultivation rack proposed in this utility model;

[0030] Figure 5This is a schematic diagram of the water pipes of an edible mushroom cultivation rack proposed in this utility model;

[0031] Figure 6 This is a schematic diagram of a water collection trough for an edible mushroom cultivation rack proposed in this utility model.

[0032] Legend:

[0033] 1. Convenient moving mechanism; 101. Support plate; 102. Through groove; 103. First fixing hole; 104. Slide groove; 105. Cover plate; 106. Planting trough; 107. Connecting block; 108. Side slide plate; 109. Second fixing hole; 110. Slide bar; 111. Locking hole; 112. Groove; 113. Pin; 114. Connecting rod; 115. Through tube; 116. Slide rod; 117. Spring; 118. Adjustment 1. Ring; 2. Block; 3. Spraying mechanism; 4. Pressure plate; 5. Water collection tank; 6. Fixing frame; 7. Servo motor; 8. Threaded rod; 9. Slider; 10. Extension rod; 210. Nozzle; 22. Slide bar; 23. SYS-LFDR-100W humidity sensor; 14. Water pipe; 25. Hose; 16. Controller; 27. Display screen; 28. Operation button. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Reference Figure 1-4 One specific embodiment provided by this utility model:

[0036] A mushroom cultivation rack includes a convenient moving mechanism 1, a spraying mechanism 2, and a controller 3. The convenient moving mechanism 1 has a spraying mechanism 2 on one side, a controller 3 on one end, two support plates 101, each with a through groove 102 in its center, multiple first fixing holes 103 in the center of one side, sliding grooves 104 on both sides of one side, a cover plate 105 on the upper end of each support plate 101, and multiple planting troughs 1 slidably connected to the outer walls of the two through grooves 102. 06. Connecting blocks 107 are fixedly connected to both ends of multiple planting troughs 106. Two side slides 108 are fixedly connected to one end of each connecting block 107. Second fixing holes 109 are provided at both ends of each side slide 108. Sliding strips 110 are fixedly connected to one side end face of each side slide 108. Locking holes 111 are provided in the middle of one side end face of each connecting block 107. Grooves 112 are provided on both sides inside each locking hole 111. Pins 113 are slidably connected inside each of the multiple second fixing holes 109. A connecting rod 114 is fixedly connected to one end of each pair of pins 113. The middle of each connecting rod 114 is fixedly connected to the middle of the middle of each connecting rod 114. A through pipe 115 is connected to the planter. Each through pipe 115 has a sliding rod 116 slidably connected to its inner center. A spring 117 is fitted onto the upper end of the outer wall of each sliding rod 116. An adjusting ring 118 is rotatably connected to one end of each sliding rod 116. A locking block 119 is fixedly connected to one end of each adjusting ring 118. The planting rack uses a through groove 102 and a sliding groove 104 on the support plate 101 as sliding channels for multiple planting troughs 106, connecting blocks 107, and side sliding plates 108. After determining the height of the planting trough 106 according to the size of different edible fungi, the pin 113 is aligned with the second fixing hole 109 and the second fixing... The first fixing hole 103 corresponding to hole 109 is inserted simultaneously, thereby completing the first fixing of the planting trough 106. Then, the slide rod 116 connected to the spring 117 on the connecting rod 114 is pressed so that the locking block 119 at one end of the slide rod 116 enters the locking hole 111. Then, the adjusting ring 118 fixedly connected to the locking block 119 is rotated so that the locking block 119 is engaged with the groove 112 in the adjusting ring 118. Then, the slide rod 116 is released and the tension of the spring 117 is used to tightly fit the locking block 119 with the groove 112, thereby completing the second locking of the planting trough 106. This realizes the convenient movement of the position of the planting trough 106 and improves the practicality of the planting rack.

[0037] Reference Figure 4-6The spraying mechanism 2 includes a pressure plate 201. A water collection tank 202 is slidably connected to the center of the pressure plate 201. A fixing frame 203 is provided on one side of the upper end face of the pressure plate 201. A servo motor 204 is provided in the center of the fixing frame 203. A threaded rod 205 is fixedly connected to the output end of the servo motor 204. A slider 206 is threadedly connected to the outer wall of the threaded rod 205. Extension rods 207 are fixedly connected to both ends of the slider 206. Spray nozzles 208 are provided in the center of the two extension rods 207. A slide bar 209 is slidably connected to one end face of the slider 206. A SYS-LFDR-100W humidity sensor 210 is provided in the center of the center of the multiple planting troughs 106. Two water pipes 211 are provided on one side of the lower end face of the cover plate 105 and one side of the upper end face of the pressure plate 201. Multiple hoses 212 are provided on one side of the outer wall of the two water pipes 211. The planting frame drives the threaded rod 205 to rotate forward and backward through the servo motor 204. The rotation of the threaded rod 205 drives the slider 206 to slide and rise on the slide bar 209. There are five planting troughs 106 in total. Each planting trough 106 is equipped with a SYS-LFDR-100W humidity sensor 210 and is numbered in the order of 1-5. During daily cultivation, when one or more SYS-LFDR-100W humidity sensors 210 in one of the planting troughs 106 detect that the humidity is too low, the PLC program will push the corresponding abnormal indicator to the display screen 301 of the controller 3. When the staff finds the problem, they can use the operation button 302 to control the slider 206 and its nozzle 208 to spray the designated planting trough 106 according to the abnormal indicator number. The hose 212 connected to the planting trough 106 can allow the water overflowing from the spray to seep down through the water pipe 211 into the water collection tank 202 inside the pressure plate 201 for water recycling, realizing the irrigation of edible fungi and improving the practicality of the device.

[0038] The controller 3 includes a display screen 301 and multiple operation buttons 302 on its upper surface. This arrangement makes it convenient for staff to control the spray mechanism 2 using the controller 3 and its components.

[0039] The upper end of the spring 117 is fixedly connected to the slide rod 116, and the lower end of the spring 117 is fixedly connected to the through tube 115. This arrangement allows the slide rod 116 to perform subsequent locking operations by utilizing the extension and retraction of the spring 117.

[0040] The diameter of the first fixing hole 103 is the same as the diameter of the second fixing hole 109. This arrangement allows the pin 113 to firmly fix the planting trough 106 to the support plate 101.

[0041] The spraying direction of multiple nozzles 208 is biased towards the lower part of the planting rack, and the spraying range of multiple nozzles 208 is smaller than the planting range of the planting trough 106. This setting ensures that the water sprayed by the nozzles 208 will not spray out of the planting trough 106 in large quantities and cause waste.

[0042] Multiple planting troughs 106 are equipped with flexible hoses 212 at both ends of one side end face. This arrangement allows excess overflowing water to be transported through the flexible hoses 212 to the water inlet pipe 211 and finally to the water collection tank 202.

[0043] The lower ends of the two water pipes 211 are fixedly connected to the inner middle of the pressure plate 201. The water collection tank 202 is connected to the water pipes 211. This arrangement allows excess water to be collected in the water collection tank 202 for the next spraying.

[0044] Working principle: The planting rack uses the through groove 102 and slide groove 104 on the support plate 101 as sliding channels for multiple planting troughs 106, connecting blocks 107, and side slide plates 108. After determining the height of the planting trough 106 according to the size of different edible fungi, the pin 113 is aligned with the second fixing hole 109 and the corresponding first fixing hole 103 and inserted together, thus completing the first fixing of the planting trough 106. Then, the slide rod 116 connected to the spring 117 on the connecting rod 114 is pressed, causing the locking block 119 at one end of the slide rod 116 to enter the locking hole 111. Then, the adjusting ring 118 fixedly connected to the locking block 119 is rotated, so that the locking block 119 is engaged with the groove 112 in the adjusting ring 118. Finally, the slide rod 116 is released, and the tension of the spring 117 is used to tightly fit the locking block 119 with the groove 112, thus completing the second locking of the planting trough 106. The planting rack is controlled by a servo motor. Motor 204 drives threaded rod 205 to rotate in both directions. The rotation of threaded rod 205 drives slider 206 to slide and rise on slide bar 209. There are five planting troughs 106. Each planting trough 106 is equipped with a SYS-LFDR-100W humidity sensor 210 and is numbered in the order of 1-5. During daily cultivation, when one or more SYS-LFDR-100W humidity sensors 210 in one or more planting troughs 106 detect that the humidity is too low, the corresponding abnormal indicator will appear on the display screen 301 of controller 3. When the staff finds the problem, they can use operation button 302 to control slider 206 and its nozzle 208 to spray water to the designated planting trough 106 according to the abnormal indicator number. The hose 212 connected to the planting trough 106 can allow the water overflowing from the spray to seep down through water pipe 211 into the water collection tank 202 inside the pressure plate 201 for water recycling.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mushroom cultivation rack, comprising a convenient moving mechanism (1), a spraying mechanism (2), and a controller (3), characterized in that: A spraying mechanism (2) is provided on one end face of the convenient moving mechanism (1), and a controller (3) is provided at one end of the convenient moving mechanism (1). The convenient moving mechanism (1) includes two support plates (101). A through groove (102) is provided in the middle of the interior of each of the two support plates (101). A plurality of first fixing holes (103) are provided in the middle of one end face of each of the two support plates (101). Sliding grooves (104) are provided on both sides of one end face of each of the two support plates (101). A cover plate (105) is provided at the upper end of each of the two support plates (101). A plurality of planting troughs (106) are slidably connected to the outer walls of the two through grooves (102). A connecting block (107) is fixedly connected to both ends of each of the plurality of planting troughs (106). Two side slides (108) are fixedly connected to one end of each of the plurality of connecting blocks (107). A first fixing hole (3) is provided at both ends of each of the plurality of side slides (108). Two fixing holes (109) are provided. Slide strips (110) are fixedly connected to one side end face of multiple side slides (108). Locking holes (111) are provided in the middle of one side end face of multiple connecting blocks (107). Grooves (112) are provided on both sides of the interior of multiple locking holes (111). Pins (113) are slidably connected to the interior of multiple second fixing holes (109). A connecting rod (114) is fixedly connected to one end of each pair of pins (113). A through tube (115) is fixedly connected to the middle of the interior of multiple connecting rods (114). A slide rod (116) is slidably connected to the middle of the interior of multiple through tubes (115). A spring (117) is sleeved on the upper end of the outer wall of multiple slide rods (116). An adjusting ring (118) is rotatably connected to one end of multiple slide rods (116). A locking block (119) is fixedly connected to one end of multiple adjusting rings (118).

2. The edible mushroom cultivation rack according to claim 1, characterized in that: The spraying mechanism (2) includes a pressure plate (201), a water collection tank (202) is slidably connected to the center of the pressure plate (201), a fixing frame (203) is provided on one side of the upper end face of the pressure plate (201), a servo motor (204) is provided in the center of the fixing frame (203), a threaded rod (205) is fixedly connected to the output end of the servo motor (204), a slider (206) is threadedly connected to the outer wall of the threaded rod (205), and an extension is fixedly connected to both ends of the slider (206). The rod (207) has a nozzle (208) in the middle of its interior. The slider (206) has a slide bar (209) slidably connected to one side end face. The multiple planting troughs (106) have a SYS-LFDR-100W humidity sensor (210) in the middle of their interior. The cover plate (105) has two water pipes (211) on one side of its lower end face and one side of its upper end face. The two water pipes (211) have multiple hoses (212) on one side of their outer walls.

3. The edible mushroom cultivation rack according to claim 1, characterized in that: The controller (3) includes a display screen (301), and a plurality of operation buttons (302) are provided on the upper surface of the controller (3).

4. The edible mushroom cultivation rack according to claim 1, characterized in that: The upper end of the spring (117) is fixedly connected to a slide rod (116), and the lower end of the spring (117) is fixedly connected to a through tube (115).

5. The edible mushroom cultivation rack according to claim 1, characterized in that: The diameter of the first fixing hole (103) is the same as the diameter of the second fixing hole (109).

6. The edible mushroom cultivation rack according to claim 2, characterized in that: The spraying direction of the multiple nozzles (208) is biased towards the lower part of the planting rack, and the spraying range of the multiple nozzles (208) is smaller than the planting range of the planting trough (106).

7. The edible mushroom cultivation rack according to claim 2, characterized in that: Each of the planting troughs (106) has a flexible tube (212) at both ends of one side end face.

8. The edible mushroom cultivation rack according to claim 2, characterized in that: The lower ends of the two water pipes (211) are fixedly connected to the inner middle of the pressure plate (201), and the water collection tank (202) is connected to the water pipes (211).