Automatic nutrient solution supply device for soilless cultivation of potatoes

Abstract

The utility model provides a kind of automatic feeding device of nutrient solution for potato soilless culture, it is related to potato soilless culture technical field.The device includes cultivation box, its top is equipped with planting device, inside is equipped with sprinkling irrigation component, stirring device, inclined plate and oxygenation device etc.Through the three groups of stirring paddle components of stirring device, realize nutrient solution uniform mixing, reduce precipitation;Oxygenation device utilizes the negative pressure suction of three-way pipe variable diameter structure formation, combined with circulation flow to build double vortex flow field, improve dissolved oxygen concentration and inhibit bacterial reproduction.In addition, sprinkling irrigation component precision atomization liquid supply, inclined plate auxiliary potato discharge.The device solves the problems of uneven mixing of nutrient solution, insufficient dissolved oxygen and other problems in the prior art, realizes the efficient circulation of nutrient solution, precision oxygenation and anti-settling control, improves the stability and yield of potato soilless culture.

Description

Technical Field

[0001] This utility model relates to the field of soilless potato cultivation technology, and in particular to an automatic nutrient solution supply device for soilless potato cultivation. Background Technology

[0002] Soilless potato cultivation is a modern cultivation technique that uses substrates such as water, peat moss, and vermiculite to replace soil and fix the plant's root system, while directly supplying the nutrients needed for potato growth through a nutrient solution. The nutrient solution is a liquid compound nutrient solution in which macroelements such as nitrogen, phosphorus, and potassium, along with microelements such as calcium, magnesium, and boron, are dissolved in water in a specific ratio according to the nutritional needs of the potato's growth cycle. The accuracy of its composition and the stability of its supply directly determine the yield and quality of the potatoes. In the process of soilless potato cultivation, the nutrient solution not only provides the root system with essential mineral nutrients but also plays an important role in regulating the pH value and dissolved oxygen content of the rhizosphere environment, making it the core support of the soilless cultivation technology system.

[0003] Currently, existing automatic nutrient solution supply devices for hydroponics of potatoes have the following shortcomings in practical applications:

[0004] 1) Uneven mixing of nutrient solution: Traditional devices often use a single stirring blade or static mixer, which has limited effect on dispersing easily crystallizing inorganic salts such as potassium nitrate and ammonium dihydrogen phosphate. This can lead to excessively high local concentrations or precipitates clogging the pipes, affecting root absorption. These precipitates not only clog the drip irrigation pipes and cause uneven nutrient supply, but also cause local nutrient excess or deficiency in the potato roots, affecting tuber enlargement efficiency.

[0005] 2) Insufficient dissolved oxygen in nutrient solution: Existing devices rely on natural dissolved oxygen or simple aeration, and have not designed a dynamic oxygenation system for the respiratory characteristics of potato roots. When the nutrient solution circulation rate is low or the planting density is high, the dissolved oxygen concentration is insufficient, which leads to obstructed root respiration, reduced absorption capacity, and even physiological diseases such as root rot. Utility Model Content

[0006] The purpose of this invention is to provide an automatic nutrient solution supply device for soilless potato cultivation, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: an automatic nutrient solution supply device for soilless potato cultivation, comprising a cultivation box, a planting device installed on the top of the cultivation box, and a sprinkler assembly, a stirring device, an inclined plate, a water level sensor, and a filter frame inside the cultivation box; the inclined plate is located below the planting device, and its surface is inclined along the direction of the discharge port to guide the potatoes to roll towards the discharge port of the cultivation box; the water level sensor is fixedly installed on the inner wall of the cultivation box that contacts the upward inclined end of the inclined plate; an oxygenation device is provided on the rear side of the cultivation box; the stirring device includes three sets of evenly distributed stirring paddle assemblies.

[0008] Preferably, the oxygenation device includes a water pump fixedly installed on a support block at the bottom rear of the cultivation box. The input end of the water pump is connected to a second inlet pipe, and the output end is connected to a second outlet pipe. The other end of the second inlet pipe passes through and extends into a filter frame inside the cultivation box. The other end of the second outlet pipe is connected to a first concentric reducing pipe. The smaller diameter end of the first concentric reducing pipe is connected to a connecting pipe, and the other end of the connecting pipe is connected to a second concentric reducing pipe. The larger diameter end of the second concentric reducing pipe is connected to a guide pipe, and the other end of the guide pipe passes through and extends into the cultivation box. A tee pipe is fitted around the connecting pipe, and the upper and lower ends of the tee pipe are respectively sealed to the second concentric reducing pipe and the first concentric reducing pipe. A vent pipe is connected to the branch pipe interface of the tee pipe.

[0009] Preferably, the inner diameter of the main tee pipe is the same as the outer diameter of the large-diameter end of the first and second concentric reducing straight pipes, and the inner diameter of the tee pipe is larger than the outer diameter of the connecting pipe; one end of the vent pipe is fixedly connected to the inside of the tee pipe and does not contact the connecting pipe, and the opening of this end is oblique; a vent hole is opened on the second concentric reducing straight pipe, and the vent hole is located inside the tee pipe; the stirring paddle assembly includes a stirring shaft, a spiral stirring blade is fixedly installed on the outside of the stirring shaft, and multiple oblique blades are installed at the bottom of the stirring shaft; a connecting shaft is connected to the lower end of the stirring shaft, and the connecting shaft passes through the bottom of the cultivation box and is connected to a second servo motor; the stirring shaft is connected to the stirring shafts of the other two sets of stirring paddle assemblies through the first and second synchronous belt assemblies respectively; the upper end of the stirring shaft is rotatably connected to the lower part of the inclined plate, and the vibration of the stirring shaft causes the inclined plate to vibrate slightly.

[0010] Preferably, one side of the cultivation box has a discharge port connected to one end of an inclined plate and a side cover for sealing the discharge port, and the other side is connected to a liquid inlet pipe at the bottom. A solenoid valve is installed on the liquid inlet pipe, and the other end of the liquid inlet pipe is connected to a nutrient solution supply box. The planting device includes multiple root cutting barrels rotatably connected to the top of the cultivation box. The top of the root cutting barrel is connected to a positioning ring via a wedge-shaped slider. A grid guide frame is provided outside the root cutting barrel, and the top of the grid guide frame is fixedly connected to the upper side of the inner wall of the cultivation box. The positioning ring and the cultivation box are elastically abutted by symmetrically arranged springs. A filter plate is fixedly connected to the lower end of the root cutting barrel. A positioning plate is fixedly connected inside the grid guide frame, and a waterproof cover is fixedly installed on the positioning plate. A first servo motor is installed inside the waterproof cover, and the output end of the first servo motor is connected to the center of the filter plate.

[0011] Preferably, the sprinkler assembly includes a small water pump, which is disposed through the edge of the inclined plate; the lower end of the small water pump is connected to a first water inlet pipe and the upper end is connected to a first water outlet pipe, and the upper end of the first water outlet pipe is connected to a liquid storage pipe; both ends of the liquid storage pipe are fixedly abutted against the inner wall of the cultivation box by a first sealing cap, and the side of the liquid storage pipe near the grid guide frame is connected to multiple water guide pipes; multiple connecting water guide pipes are connected to the water guide pipes, and the upper end of the connecting water guide pipes is connected to an atomizing sprayer; a second sealing cap is fixedly installed at the other end of the water guide pipe.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. The spiral stirring blades of the three sets of stirring paddles and the bottom inclined blades form upper and lower convection, combined with inclined high-frequency micro-vibration, which improves the dispersion efficiency of easily crystallizing inorganic salts such as potassium nitrate, reduces the amount of precipitate formation, and fundamentally solves the problems of pipe blockage and root nutrient imbalance caused by local oversaturation in traditional devices. It significantly improves the uniformity of nutrient solution and ensures a stable nutrient supply during the potato tuber enlargement period.

[0014] 2. The oxygenation device uses the negative pressure difference generated by the diameter-changing structure of the straight pipe and the three-way pipe to draw in air, cut the oxygen into micron-sized bubbles, stabilize the dissolved oxygen concentration, and reduce the incidence of root rot. At the same time, the nutrient solution circulation reduces sedimentation and avoids bacterial growth or pH imbalance in stagnant nutrient solution, thus creating a stable growth environment for potato roots. Attached Figure Description

[0015] Figure 1 This is a frontal perspective view of the automatic nutrient solution supply device for soilless potato cultivation described in this utility model.

[0016] Figure 2 This is a rear-view perspective view of the automatic nutrient solution supply device for soilless potato cultivation described in this utility model.

[0017] Figure 3 This is a perspective view of the internal structure of the cultivation box in the automatic nutrient solution supply device for soilless potato cultivation described in this utility model.

[0018] Figure 4 This is a three-dimensional view of the sprinkler component structure in the automatic nutrient solution supply device for soilless potato cultivation described in this utility model.

[0019] Figure 5 This is a three-dimensional view of the stirring device in the automatic nutrient solution supply device for soilless potato cultivation described in this utility model.

[0020] Figure 6 This is a three-dimensional view of the oxygenation component in the automatic nutrient solution supply device for soilless potato cultivation described in this utility model.

[0021] Figure 7 This is a three-dimensional view of the planting device structure in the automatic nutrient solution supply device for soilless potato cultivation according to the present invention.

[0022] Figure 8 This is a three-dimensional view of the planting device portion of the automatic nutrient solution supply device for soilless potato cultivation according to the present invention.

[0023] Figure 9 The present invention relates to an automatic nutrient solution supply device for hydroponics of potatoes. Figure 6 Enlarged 3D view of the structure at point A in the middle.

[0024] Legend: 1. Cultivation box; 11. Side cover; 12. Liquid inlet pipe; 13. Solenoid valve; 2. Planting device; 21. Positioning ring; 22. Spring; 23. Root cutting bucket; 24. Grid guide frame; 25. Positioning plate; 26. Waterproof cover; 27. First servo motor; 28. Filter plate; 3. Sprinkler assembly; 31. Small water pump; 32. First water inlet pipe; 33. First water outlet pipe; 34. Liquid storage pipe; 35. First sealing cap; 36. Water guide pipe; 37. Connecting water guide pipe; 38. Atomizing sprayer; 39. Second sealing cap; 4. Stirring device; 41. 411. Agitator assembly; 412. Spiral agitator blade; 413. Inclined blade; 414. Connecting shaft; 42. Second servo motor; 43. First synchronous belt assembly; 44. Second synchronous belt assembly; 5. Aeration device; 51. Water pump; 52. Second water inlet pipe; 53. Second water outlet pipe; 54. First concentric reducing straight pipe; 55. T-connector; 56. Vent pipe; 57. Connecting pipe; 58. Second concentric reducing straight pipe; 581. Vent hole; 59. Guide pipe; 6. Inclined plate; 7. Water level sensor; 8. Filter frame; 9. Nutrient solution supply box. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can also be implemented in other ways than those described herein, and therefore the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Please see Figure 1 , Figure 2 Figure 3 and Figure 5An automatic nutrient solution supply device for soilless potato cultivation includes a cultivation box 1. The cultivation box 1 is characterized by: a planting device 2 installed on the top; a sprinkler assembly 3, a stirring device 4, an inclined plate 6, a water level sensor 7, and a filter frame 8 inside the cultivation box 1; the inclined plate 6 is located below the planting device 2, and its surface is inclined along the discharge port direction to guide the potatoes to roll towards the discharge port of the cultivation box 1; the water level sensor 7 is fixedly installed on the inner wall of the cultivation box 1 that contacts the upwardly inclined end of the inclined plate 6; an oxygenation device 5 is provided at the rear of the cultivation box 1; and the stirring device 4 includes three sets of evenly distributed stirring paddle assemblies 41.

[0028] It should be specifically noted that the stirring paddle assembly 41 includes a stirring shaft 411, with a spiral stirring blade 412 fixedly installed on the outside of the stirring shaft 411, and multiple inclined blades 413 installed at the bottom of the stirring shaft 411; a connecting shaft 414 is connected to the lower end of the stirring shaft 411, the connecting shaft 414 passes through the bottom of the cultivation box 1 and is connected to a second servo motor 42; the stirring shaft 411 is connected to the stirring shaft 411 of the other two sets of stirring paddle assemblies 41 through the first synchronous belt assembly 43 and the second synchronous belt assembly 44 respectively.

[0029] Please see Figure 2 and Figure 6 The oxygenation device 5 includes a water pump 51 fixedly installed on the bottom support block at the rear side of the cultivation box 1. The input end of the water pump 51 is connected to a second water inlet pipe 52, and the output end is connected to a second water outlet pipe 53. The other end of the second water inlet pipe 52 passes through and extends into the filter frame 8 inside the cultivation box 1. The other end of the second water outlet pipe 53 is connected to a first concentric reducing straight pipe 54. The small diameter end of the first concentric reducing straight pipe 54 is connected to a connecting pipe 57, and the other end of the connecting pipe 57 is connected to a second concentric reducing straight pipe 58. The large diameter end of the second concentric reducing straight pipe 58 is connected to a guide pipe 59, and the other end of the guide pipe 59 passes through and extends into the cultivation box 1. A three-way pipe 55 is fitted outside the connecting pipe 57. The upper and lower ends of the three-way pipe 55 are respectively sealed to the second concentric reducing straight pipe 58 and the first concentric reducing straight pipe 54. A ventilation pipe 56 is connected to the branch pipe interface of the three-way pipe 55.

[0030] It should be specifically noted that the tee pipe 55 adopts a concentric reducing diameter connection structure, and its main pipe inner diameter is precisely matched with the outer diameter of the large diameter end of the first concentric reducing diameter straight pipe 54 and the second concentric reducing diameter straight pipe 58, achieving a leak-free connection through a sealing ring; the outer diameter of the connecting pipe 57 is smaller than the inner diameter of the tee pipe 55, forming an annular cross-sectional area difference with a cross-sectional area ratio of 1:1.5; one end of the vent pipe 56 is fixedly connected to the inside of the tee pipe 55 and does not contact the connecting pipe 57, and the pipe opening at this end is oblique with an inclination angle of 45°; the second concentric reducing diameter straight pipe 58 has a vent hole 581 located inside the tee pipe 55; the oxygenation device 5 enables the nutrient solution inside the cultivation box 1 to circulate, reducing sedimentation and preventing bacterial growth or pH imbalance caused by stagnant nutrient solution.

[0031] Please see Figure 1 Figure 2 and Figure 3 The cultivation box 1 has a discharge port connected to one end of the inclined plate 6 and a side cover 11 for sealing the discharge port on one side. The other side is connected to the liquid inlet pipe 12 at the bottom of the 6. A solenoid valve 13 is installed on the liquid inlet pipe 12, and the other end of the liquid inlet pipe 12 is connected to the nutrient solution supply box 9.

[0032] Please see Figures 1-3 and Figure 7 and Figure 8 The planting device 2 includes multiple root cutting barrels 23 rotatably connected to the top of the cultivation box 1. The top of the root cutting barrel 23 is connected to a positioning ring 21 via a wedge-shaped slider. A grid guide frame 24 is provided on the outside of the root cutting barrel 23. The top of the grid guide frame 24 is fixedly connected to the upper side of the inner wall of the cultivation box 1. The positioning ring 21 and the cultivation box 1 are elastically abutted by symmetrically arranged springs 22. A filter plate 28 is fixedly connected to the lower end of the root cutting barrel 23. A positioning plate 25 is fixedly connected inside the grid guide frame 24. A waterproof cover 26 is fixedly installed on the positioning plate 25. A first servo motor 27 is installed inside the waterproof cover 26. The output end of the first servo motor 27 is connected to the center of the filter plate 28.

[0033] It should be specifically explained that after the potatoes are cut, they fall onto the inclined plate 6 through the grid guide frame 24. The side cover 11 is opened, and the stirring device 4, the spraying assembly 3 and the oxygenation device 5 are turned off. Since the inclined plate 6 is inclined along the direction of the discharge port, combined with the vibration of the self-rotation of the stirring shaft 411, the inclined plate 6 vibrates slightly, and the potato tubers automatically roll to the discharge port. The entire discharge process does not require manual turning, thus avoiding damage to the potato skin.

[0034] Please see Figure 3 and Figure 4The sprinkler assembly 3 includes a small water pump 31, which is installed through the edge of the inclined plate 6. The lower end of the small water pump 31 is connected to a first water inlet pipe 32, and the upper end is connected to a first water outlet pipe 33. The upper end of the first water outlet pipe 33 is connected to a liquid storage pipe 34. The two ends of the liquid storage pipe 34 are fixedly abutted against the inner wall of the cultivation box 1 through a first sealing cap 35. The side of the liquid storage pipe 34 near the grid guide frame 24 is connected to multiple water guide pipes 36. Multiple connecting water guide pipes 37 are connected to the water guide pipes 36. The upper end of the connecting water guide pipes 37 is connected to an atomizing sprayer 38. The other end of the water guide pipe 36 is fixedly installed with a second sealing cap 39.

[0035] Please see Figures 1-9 The working principle of the entire equipment in specific use is as follows: Step 1, initial preparation and potato planting: Put the potato seed tuber into the root cutting bucket 23. The spring 22 elastically abuts and presses down the positioning ring 21 to fix the seed tuber. The nutrient solution supply box 9 injects the initial nutrient solution into the cultivation box 1 through the inlet pipe 12. The solenoid valve 13 controls the flow rate. The nutrient solution flows through the space below the inclined plate 6. The water level sensor 7 monitors the liquid level in real time. When the liquid level rises to the lower part of the upward tilting end of the inclined plate 6, the injection stops.

[0036] Step 2, Nutrient Solution Circulation and Mixing: The second servo motor 42 starts, driving the stirring shaft 411 to rotate via the connecting shaft 414. The spiral stirring blades 412 perform spiral stirring of the upper and middle layers of nutrient solution, while the bottom inclined blades 413 stir and mix the bottom nutrient solution. The three sets of stirring blade assemblies 41 rotate synchronously via the first synchronous belt assembly 43 and the second synchronous belt assembly 44. The upper end of the stirring shaft 411 is rotatably connected to the lower part of the inclined plate 6, causing the inclined plate 6 to generate high-frequency micro-vibration to prevent potato seed tubers from accumulating. The water pump 51 of the oxygenation device 5 starts synchronously, through the second water inlet... The nutrient solution is drawn from the filter frame 8 through the second water outlet pipe 53 and pressed into the first concentric reducing diameter straight pipe 54. Due to the narrowing of the pipe diameter, a high-speed water flow is formed, which generates negative pressure in the tee pipe 55 outside the connecting pipe 57. The inclined end of the vent pipe 56 draws in outside air, and the mixed air flow is sprayed into the guide pipe 59 through the vent hole 581 of the second concentric reducing diameter straight pipe 58. It then flows back into the cultivation box 1 with the nutrient solution. The filter frame 8 intercepts larger impurities to prevent clogging of the second water inlet pipe 52 of the oxygenation device 5. During this process, the high-speed water flow cuts the air to form micron-sized bubbles, which increases the dissolved oxygen concentration.

[0037] Step 3, Precision Irrigation: The small water pump 31 draws nutrient solution from below the inclined plate 6, pumps it into the storage pipe 34 through the first water inlet pipe 32, and then diverts it to the atomizing sprayer 38 through the water guide pipe 36. The atomizing sprayer 38 sprays the nutrient solution evenly onto the potato root area, avoiding direct washing of the seed potatoes.

[0038] Step 4, Potato Harvesting: After the potatoes mature, the first servo motor 27 drives the root cutting barrel 23 and the filter plate 28 to rotate, and the sharp edges cut off the root system. The elasticity of the spring 22 causes the cutting barrel to vibrate slightly when rotating, which helps to separate the remaining roots. The cut potatoes fall onto the inclined plate 6 through the grid guide frame 24. The side cover 11 is opened, and the stirring device 4, the sprinkler assembly 3 and the oxygenation device 5 are turned off. Since the inclined plate 6 is inclined along the direction of the discharge port, combined with the vibration of the stirring shaft 411, the inclined plate 6 vibrates slightly, and the potato tubers automatically roll to the discharge port. The entire discharge process does not require manual turning, which avoids damage to the potato skin.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A potato soilless culture with a nutrient solution automatic feeding device, comprising a culture box (1), characterized in that: The cultivation box (1) is equipped with a planting device (2) on top. The cultivation box (1) is equipped with a sprinkler assembly (3), a stirring device (4), an inclined plate (6), a water level sensor (7), and a filter frame (8). The inclined plate (6) is located below the planting device (2), and its surface is inclined along the direction of the discharge port to guide the potatoes to roll towards the discharge port of the cultivation box (1). The water level sensor (7) is fixedly installed on the inner wall of the cultivation box (1) where it contacts the inclined plate (6) at the upward inclined end. An oxygenation device (5) is provided on the rear side of the cultivation box (1). The stirring device (4) includes three sets of evenly distributed stirring paddle assemblies (41).

2. The automatic nutrient solution supply device for soilless culture of potatoes according to claim 1, characterized in that: The oxygenation device (5) includes a water pump (51) fixedly installed on the bottom support block at the rear side of the cultivation box (1). The input end of the water pump (51) is connected to a second inlet pipe (52), and the output end is connected to a second outlet pipe (53). The other end of the second inlet pipe (52) passes through and extends into the filter frame (8) inside the cultivation box (1). The other end of the second outlet pipe (53) is connected to a first concentric reducing pipe (54), and the smaller diameter end of the first concentric reducing pipe (54) is connected to a connecting pipe (57). The other end of the connecting pipe (57) is connected to a second concentric reducing straight pipe (58); the large diameter end of the second concentric reducing straight pipe (58) is connected to a guide pipe (59), the other end of the guide pipe (59) passes through and extends into the cultivation box (1); a three-way pipe (55) is fitted on the outside of the connecting pipe (57), the upper and lower ends of the three-way pipe (55) are respectively sealed to the second concentric reducing straight pipe (58) and the first concentric reducing straight pipe (54); a ventilation pipe (56) is connected to the branch pipe interface of the three-way pipe (55).

3. The automatic nutrient solution supply apparatus for soilless culture of potatoes according to claim 2, characterized in that: The inner diameter of the main pipe of the tee pipe (55) is the same as the outer diameter of the large diameter end of the first concentric reducing straight pipe (54) and the second concentric reducing straight pipe (58). The inner diameter of the tee pipe (55) is larger than the outer diameter of the connecting pipe (57). One end of the vent pipe (56) is fixedly connected to the inside of the tee pipe (55) and does not contact the connecting pipe (57). The opening of this end is oblique. A vent hole (581) is provided on the second concentric reducing straight pipe (58). The vent hole (581) is located inside the tee pipe (55).

4. The automatic nutrient solution supply apparatus for soilless culture of potatoes according to claim 1, characterized in that: The stirring paddle assembly (41) includes a stirring shaft (411), a spiral stirring blade (412) is fixedly installed on the outside of the stirring shaft (411), and multiple inclined blades (413) are installed at the bottom of the stirring shaft (411); a connecting shaft (414) is connected to the lower end of the stirring shaft (411), the connecting shaft (414) passes through the bottom of the cultivation box (1) and is connected to a second servo motor (42); the stirring shaft (411) is connected to the stirring shaft (411) of the other two sets of stirring paddle assemblies (41) through the first synchronous belt assembly (43) and the second synchronous belt assembly (44); the upper end of the stirring shaft (411) is rotatably connected to the lower part of the inclined plate (6), and the inclined plate (6) vibrates slightly as the stirring shaft (411) rotates.

5. The automatic nutrient solution supply apparatus for soilless culture of potatoes according to claim 1, characterized in that: The cultivation box (1) has an outlet connected to one end of the inclined plate (6) and a side cover (11) for sealing the outlet on one side, and an inlet pipe (12) connected to the lower part of the other side of the box (6); a solenoid valve (13) is installed on the inlet pipe (12), and the other end of the inlet pipe (12) is connected to the nutrient solution supply box (9).

6. The automatic nutrient solution supply apparatus for soilless culture of potatoes according to claim 1, characterized in that: The planting device (2) includes multiple root cutting barrels (23) rotatably connected to the top of the cultivation box (1). The top of the root cutting barrel (23) is connected to a positioning ring (21) via a wedge-shaped slider. A grid guide frame (24) is provided outside the root cutting barrel (23). The top of the grid guide frame (24) is fixedly connected to the upper side of the inner wall of the cultivation box (1). The positioning ring (21) and the cultivation box (1) are elastically abutted by symmetrically arranged springs (22). A filter plate (28) is fixedly connected to the lower end of the root cutting barrel (23). A positioning plate (25) is fixedly connected inside the grid guide frame (24). A waterproof cover (26) is fixedly installed on the positioning plate (25). A first servo motor (27) is installed inside the waterproof cover (26). The output end of the first servo motor (27) is connected to the center of the filter plate (28).

7. The automatic nutrient solution supply apparatus for soilless culture of potatoes according to claim 1, characterized in that: The sprinkler assembly (3) includes a small water pump (31), which is installed through the edge of the inclined plate (6); the lower end of the small water pump (31) is connected to a first water inlet pipe (32), and the upper end is connected to a first water outlet pipe (33), the upper end of the first water outlet pipe (33) is connected to a liquid storage pipe (34); the two ends of the liquid storage pipe (34) are fixedly abutted against the inner wall of the cultivation box (1) through a first sealing cap (35), and the side of the liquid storage pipe (34) near the grid guide frame (24) is connected to multiple water guide pipes (36); multiple connecting water guide pipes (37) are connected to the water guide pipes (36), the upper end of the connecting water guide pipes (37) is connected to an atomizing sprayer (38); the other end of the water guide pipe (36) is fixedly installed with a second sealing cap (39).

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