Temperature control seedling raising device for agricultural planting

Abstract

The invention discloses a temperature control seedling raising device for agricultural planting, and relates to the technical field of agriculture, the device is arranged in a greenhouse, plant root systems can obtain a better growth environment through three-dimensional rotary seedling raising, and root system development and nutrient absorption are promoted; meanwhile, even greenhouse illumination and good ventilation conditions are also beneficial to reducing diseases and insect pests and improving the quality and survival rate of the seedlings, the seedlings are placed in the seedling pots and then placed in the slotted holes of the sliding frame, each seedling can be taken out independently, operators can maintain and observe the seedlings conveniently, and the working efficiency is improved. The rapid mounting and dismounting of the sliding frame helps to improve the replacement and treatment efficiency of seedlings, accumulated water in the seedling frame can be discharged through drainage holes, a water control plate is driven to move through an arc plate and a poke rod, at the moment, the drainage holes can be opened, the accumulated water flows out, and the seedlings are prevented from being damaged by excessive water.

Description

Technical Field

[0001] The invention relates to the technical field of agriculture, and in particular to a temperature-controlled seedling raising device for agricultural planting. Background Art

[0002] Traditional agricultural seedling raising methods are greatly affected by the natural environment. For example, in cold winters or hot summers, the success rate and quality of seedling raising are difficult to guarantee. For example, in winter, low temperatures may cause slow seed germination, hindered seedling growth, or even freezing to death; in summer, high temperatures may cause seedlings to grow too tall and pests and diseases to breed. Moreover, it is difficult to accurately control environmental factors such as temperature, humidity, and light in traditional seedling raising methods, resulting in a long seedling raising cycle, low efficiency, and unstable quality.

[0003] The patent with the patent announcement number CN205357371U relates to the field of agricultural technology. The patent discloses a three-dimensional rotating seedling raising frame with a drip irrigation function, including a motor, a first support frame, a second support frame, an irrigation water pipe and a seedling raising device, and the first support frame and the second support frame are fixedly connected by a connecting column between two support plates, and a pulley is fixedly installed on the inner side of one end of the support rod of the first support frame and the second support frame, and the irrigation water pipe is movably sleeved on the fixed shaft of the pulleys on both sides through the groove on one side of the connecting head at both ends of the water pipe body, and a drip irrigation device is arranged at the bottom of the water pipe body of the irrigation water pipe. The three-dimensional rotating seedling raising frame with a drip irrigation function has a simple structure and is easy to use. It can enable each single seedling raising device of the seedling raising frame to obtain the same lighting conditions, so that the seedlings on the entire seedling raising frame have the same growth conditions, and can drip irrigate the seedlings in the seedling raising trough, which can not only prevent the seedlings from being waterlogged due to excessive watering, but also save water resources.

[0004] In the above patent, it is possible to prevent seedlings from being waterlogged due to excessive watering and to save water resources. However, the current equipment has the following problems: during the seedling raising process, some seedlings may die or grow poorly and need to be replanted in time. If individual seedlings cannot be taken out, it is difficult to accurately replant the missing seedlings, which may cause uneven distribution of seedlings in the entire seedling tray or seedling area, affecting the overall seedling quality and yield. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a temperature-controlled seedling raising device for agricultural planting, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a temperature-controlled seedling raising device for agricultural planting, comprising a greenhouse shed, a driving frame and a gantry frame, wherein the driving frame is arranged inside the greenhouse shed, the gantry frame is arranged inside the greenhouse shed, and also comprises a seedling raising device; wherein the seedling raising device comprises a rotating frame, a seedling raising frame, a sliding frame, a seedling raising pot, a hollow block, a limit rod, a toggle rod, a water control plate, an arc plate and a trigger block, wherein the rotating frame is fixedly mounted on the output end of the driving frame, the seedling raising frame is rotatably mounted on the inner wall of the rotating frame, the sliding frame is slidably mounted on the inner wall of the seedling raising frame, the seedling raising pot is arranged on the inner wall of the sliding frame, and the seedling raising pot is placed on the inner wall of the sliding frame, and the seedlings are placed in the seedling raising pot and then placed in the slot of the sliding frame. Each seedling can be taken out separately, which is convenient for operators to maintain and observe. The hollow block is fixedly installed on the inner wall of the seedling rack, the limit rod is slidably installed on the inner wall of the hollow block, the toggle rod is slidably installed on the circumferential surface of the driving rack, the water control plate is slidably installed on the inner wall of the seedling rack, the arc plate is fixedly installed on the bottom of the water control plate, and the trigger block is fixedly installed on the surface of the rotating rack. When water accumulates in the seedling rack, the water control plate is driven to move by the movement of the seedling rack, and the movement of the water control plate drives the arc plate to move. The arc surface of the arc plate contacts the toggle rod to make the arc plate move upward, and the movement of the arc plate drives the water control plate to move. At this time, the drainage hole will be opened, so that the accumulated water flows out; Wherein, a spraying device for irrigating the seedlings and a protective device for repelling insects on the seedlings are arranged above the driving frame.

[0007] According to the above technical scheme, a docking groove is provided on the outer wall of the sliding frame. When the sliding frame is installed, the outer wall thereof contacts the inclined surface of the limit rod so that the limit rod moves and compresses the No. 1 spring at the same time. When the limit rod overlaps with the docking groove, the installation of the sliding frame is completed by resetting the limit rod and inserting it into the docking groove. A drainage hole is provided on the inner wall of the seedling rack. A No. 1 spring is provided between the limit rod and the hollow block. The limit rod is reset by the provided No. 1 spring. A No. 2 spring is provided between the water control plate and the seedling rack. The water control plate is reset by the provided No. 2 spring.

[0008] According to the above technical solution, the spraying device includes a liquid storage tank, a nozzle, a switch valve and a knob. The liquid storage tank is fixedly installed on the inner wall of the gantry, the nozzle is arranged at the bottom of the liquid storage tank, the nozzle is connected to the liquid storage tank, the switch valve is arranged on the surface of the nozzle, and the knob is rotatably installed on the surface of the switch valve. A No. 1 torsion spring is arranged between the knob and the switch valve, and the knob is reset by the No. 1 torsion spring. Nutrient solution is added to the liquid storage tank, and the trigger block moves to contact the knob to rotate. The knob rotates to open the switch valve, and the nutrient solution is sprayed through the nozzle.

[0009] According to the above technical solution, the spraying device also includes a servo motor, a rotating rod and a stirring blade. The fixed end of the servo motor is fixedly installed on the top of the liquid storage tank, one side of the rotating rod is rotatably installed on the inner wall of the liquid storage tank, and the other side of the rotating rod is transmission-connected to the output end of the servo motor through a No. 1 belt. The stirring blade is fixedly installed on the circumferential surface of the rotating rod. The No. 1 belt is driven by the output end of the servo motor to rotate to drive the rotating rod, and the rotation of the rotating rod drives the stirring blade to rotate.

[0010] According to the above technical solution, the spraying device also includes a connecting rod and a scraper. The connecting rod is fixedly installed at the bottom of the rotating rod, and the scraper is fixedly installed on the surface of the connecting rod. The scraper is in contact with the liquid storage tank. When the rotating rod rotates, the connecting rod is driven to rotate, and the rotation of the connecting rod drives the scraper to rotate.

[0011] According to the above technical solution, the protective device includes a round rod, a funnel and a collecting bucket. The round rod is fixedly installed on the top of the liquid storage tank, the funnel is fixedly installed on the circumferential surface of the round rod, and the collecting bucket is fixedly installed on the bottom of the funnel. After being electrocuted, the pests fall into the funnel and then enter the collecting bucket for collection.

[0012] According to the above technical solution, the protective device includes a driving rod, an electric grid and an insect-attracting lamp. The driving rod is fixedly mounted on the top of the rotating rod, the electric grid is arranged on the circumferential surface of the round rod, and the insect-attracting lamp is fixedly mounted on the top of the round rod. The insect-attracting lamp is used to attract pests, and the pests falling on the electric grid will be electrocuted.

[0013] According to the above technical solution, the protective device also includes a scraper, a collecting rod and an output groove. The scraper is fixedly mounted on the circumferential surface of the driving rod, the scraper is in contact with the funnel, the collecting rod is fixedly mounted on the circumferential surface of the driving rod, the collecting rod is in contact with the collecting bucket, and the output groove is provided at the bottom of the collecting bucket. The driving rod rotates and drives the collecting rod to rotate at the same time. The collection rod rotates so that the pests on the inner wall of the collecting bucket are moved to the output groove for output.

[0014] The present invention provides a temperature-controlled seedling raising device for agricultural planting, which has the following beneficial effects: (1) The invention, by setting up a seedling raising device and placing the device in a greenhouse, can provide a better growth environment for plant roots through three-dimensional rotating seedling raising, thereby promoting root development and nutrient absorption. At the same time, uniform greenhouse lighting and good ventilation conditions can also help reduce the occurrence of diseases and insect pests, and improve the quality and survival rate of seedling raising. By placing the seedlings in a seedling raising pot and then placing them in the slots of a sliding rack, each seedling can be taken out individually, which is convenient for operators to maintain and observe them. The rapid installation and disassembly of the sliding rack helps to improve the efficiency of seedling replacement and processing. When there is water accumulation in the seedling raising rack, it will be discharged through the drainage hole. The water control plate is driven to move by the arc plate and the toggle rod. At this time, the drainage hole will be opened to allow the accumulated water to flow out, thereby preventing the seedlings from being damaged by excessive water.

[0015] (2) The invention, through the setting of the spraying device, adds nutrient solution into the liquid storage tank, and opens the switch valve through the trigger block and the knob. At this time, the nutrient solution is sprayed through the nozzle. Regular spraying of the nutrient solution can keep the substrate moist, create a good moisture environment for the plant roots, and avoid the damage to the roots caused by the substrate being too dry or too wet. The compounds in the nutrient solution are fully mixed through the servo motor, the rotating rod, and the stirring blade to maintain the uniformity of the nutrient solution and ensure that the plant roots can be exposed to balanced nutrients. The rotating rod and the connecting rod drive the scraper to clean regularly to avoid the accumulation of dirt, keep the environment in the tank clean, and reduce potential harm to seedlings.

[0016] (3) The invention, through the setting of protective devices, attracts pests through insect-attracting lamps. Pests that fall on the electric grid will be electrocuted and then fall into the funnel and enter the collecting bucket for collection. This can reduce the damage of pests to seedlings, improve the growth quality and survival rate of seedlings, and lay a good foundation for subsequent planting and production. The pests on the inner wall of the funnel are collected by the rotating rod, driving rod, and scraper to prevent them from accumulating on the inner wall of the funnel and causing environmental impact. The pests on the inner wall of the collecting bucket are moved to the output slot for output through the driving rod and collecting rod for subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the position structure of the seedling raising frame and the rotating frame of the present invention; Figure 3 This is a schematic diagram of the position structure of the sliding frame and the water control plate of the present invention; Figure 4 This is a schematic diagram of the position structure of the hollow block and the sliding frame of the present invention; Figure 5 This is a schematic diagram of the position structure of the nozzle and the rotating rod of the present invention; Figure 6 For the present invention Figure 5A schematic diagram of the structure enlargement of part A; Figure 7 This is a schematic diagram of the scraper and funnel position structure of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of part B.

[0018] In the figure: 1. Greenhouse shed; 2. Drive frame; 3. Rotating frame; 4. Seedling rack; 5. Sliding frame; 6. Seedling pot; 7. Hollow block; 8. Limit rod; 9. Toggle rod; 10. Water control plate; 11. Arc plate; 12. Trigger block; 20. Gantry; 21. Liquid storage tank; 22. Sprinkler; 23. Switch valve; 24. Knob; 25. Servo motor; 26. Rotating rod; 27. Stirring blade; 28. Connecting rod; 29. ​​Scraper; 30. Round rod; 31. Funnel; 32. Collecting bucket; 33. Drive rod; 34. Electric grid; 35. Insect attractant lamp; 36. Scraper; 37. Collecting rod; 38. Output slot. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 4 One embodiment of the present invention is: a temperature-controlled seedling raising device for agricultural planting, comprising a greenhouse 1, a driving frame 2 and a gantry 20, wherein the driving frame 2 is arranged inside the greenhouse 1, the gantry 20 is arranged inside the greenhouse 1, and also comprises a seedling raising device; wherein the seedling raising device comprises a rotating frame 3, a seedling raising frame 4, a sliding frame 5, a seedling raising pot 6, a hollow block 7, a limit rod 8, a toggle rod 9, a water control plate 10, an arc plate 11 and a trigger block 12, the rotating frame 3 is fixedly mounted on the output end of the driving frame 2, the seedling raising frame 4 is rotatably mounted on the inner wall of the rotating frame 3, and the sliding frame 5 is slidably mounted on the inner wall of the seedling raising frame 4, The seedling basin 6 is arranged on the inner wall of the sliding frame 5, the hollow block 7 is fixedly installed on the inner wall of the seedling frame 4, the limit rod 8 is slidably installed on the inner wall of the hollow block 7, the toggle rod 9 is slidably installed on the circumferential surface of the driving frame 2, the water control plate 10 is slidably installed on the inner wall of the seedling frame 4, the arc plate 11 is fixedly installed on the bottom of the water control plate 10, and the trigger block 12 is fixedly installed on the surface of the rotating frame 3. Rotating seedling cultivation can provide a better growth environment for the plant roots, promote the development of the root system and nutrient absorption. At the same time, uniform greenhouse lighting and good ventilation conditions can also help reduce the occurrence of diseases and pests and improve the quality and survival rate of seedling cultivation.

[0021] A docking groove is provided on the outer wall of the sliding frame 5, and a drainage hole is provided on the inner wall of the seedling frame 4 to prevent the seedlings from being damaged by excessive moisture. A No. 1 spring is arranged between the limit rod 8 and the hollow block 7, and the limit rod 8 is reset by the No. 1 spring. A No. 2 spring is arranged between the water control plate 10 and the seedling frame 4, and the water control plate 10 is reset by the No. 2 spring.

[0022] When the present embodiment is working, the device is placed in the greenhouse shed 1, and the rotating frame 3 is driven to rotate by the driving frame 2. The rotating frame 3 rotates and drives the trigger block 12 to move. The rotating frame 3 rotates and drives the seedling frame 4 to move. Rotating seedlings can provide a better growth environment for plant roots, promote root development and nutrient absorption. At the same time, uniform greenhouse lighting and good ventilation conditions also help to reduce the occurrence of diseases and pests, and improve the quality and survival rate of seedlings. The seedlings are placed in the seedling pots 6 and then placed in the slots of the sliding frame 5, so that each seedling can be taken out separately, which is convenient for operators to maintain and observe them. When the sliding frame 5 is installed, the limit rod 8 moves by contacting its outer wall with the inclined surface of the limit rod 8. At the same time, spring No. 1 is compressed. When the limit rod 8 overlaps with the docking groove, the limit rod 8 is reset and inserted into the docking groove to complete the installation of the sliding frame 5. When the sliding frame 5 is disassembled, the limit rod 8 can be pulled out to take out the sliding frame 5. The above method helps to improve the efficiency of replacement and processing of seedlings. When there is water accumulated in the seedling frame 4, it will be discharged through the drainage hole. The movement of the seedling frame 4 drives the water control plate 10 to move, and the movement of the water control plate 10 drives the circular plate 11 to move. The circular surface of the circular plate 11 contacts the toggle rod 9 to make the circular plate 11 move upward, and the movement of the circular plate 11 drives the water control plate 10 to move. At this time, the drainage hole will be opened, allowing the accumulated water to flow out, preventing the seedlings from being damaged by excessive moisture.

[0023] See also Figure 1-Figure 8 On the basis of the above embodiment, in another embodiment of the present invention, a spraying device for irrigating the seedlings and a protective device for repelling insects on the seedlings are arranged above the driving frame 2, and the spraying device includes a liquid storage tank 21, a nozzle 22, a switch valve 23 and a knob 24. The liquid storage tank 21 is fixedly installed on the inner wall of the gantry 20, the nozzle 22 is arranged at the bottom of the liquid storage tank 21, the nozzle 22 is connected to the liquid storage tank 21, the switch valve 23 is arranged on the surface of the nozzle 22, and the knob 24 is rotatably installed on the surface of the switch valve 23. Regularly spraying the nutrient solution can keep the substrate moist, create a good moisture environment for the plant roots, and avoid the substrate being too dry or too wet to cause damage to the root system. A No. 1 torsion spring is arranged between the knob 24 and the switch valve 23, and the No. 1 torsion spring is arranged to drive the knob 24 to reset.

[0024] The spraying device also includes a servo motor 25, a rotating rod 26 and a stirring blade 27. The fixed end of the servo motor 25 is fixedly installed on the top of the liquid storage tank 21, one side of the rotating rod 26 is rotatably installed on the inner wall of the liquid storage tank 21, and the other side of the rotating rod 26 is transmission-connected to the output end of the servo motor 25 through a No. 1 belt. The stirring blade 27 is fixedly installed on the circumferential surface of the rotating rod 26. Various compounds in the nutrient solution may precipitate when left stationary for a long time, resulting in too high a concentration at the bottom and too low a concentration at the top. The rotation of the stirring blade 27 can make these compounds fully mixed to maintain the uniformity of the nutrient solution.

[0025] The spraying device also includes a connecting rod 28 and a scraper 29. The connecting rod 28 is fixedly mounted on the bottom of the rotating rod 26, and the scraper 29 is fixedly mounted on the surface of the connecting rod 28. The scraper 29 is in contact with the liquid storage tank 21. The liquid storage tank 21 that has been used for a long time is prone to form a dirt layer on the bottom of its inner wall. Regular cleaning of the scraper 29 can avoid the accumulation of dirt, keep the environment inside the tank clean, and reduce potential harm to seedling cultivation.

[0026] The protective device includes a round rod 30, a funnel 31 and a collecting bucket 32. The round rod 30 is fixedly installed on the top of the liquid storage tank 21, the funnel 31 is fixedly installed on the circumferential surface of the round rod 30, and the collecting bucket 32 ​​is fixedly installed at the bottom of the funnel 31. Pests falling on the electric grid 34 will be electrocuted and then fall into the funnel 31 and enter the collecting bucket 32 ​​for collection, which can reduce the damage of pests to seedlings and improve the growth quality and survival rate of seedlings.

[0027] The protective device includes a driving rod 33, an electric grid 34 and an insect-attracting lamp 35. The driving rod 33 is fixedly mounted on the top of the rotating rod 26, the electric grid 34 is arranged on the circumferential surface of the round rod 30, and the insect-attracting lamp 35 is fixedly mounted on the top of the round rod 30. The insect-attracting lamp 35 attracts pests and cooperates with the electric grid 34 to electrocute the pests.

[0028] The protective device also includes a scraper 36, a collecting rod 37 and an output groove 38. The scraper 36 is fixedly mounted on the circumferential surface of the driving rod 33, and the scraper 36 contacts the funnel 31. The collecting rod 37 is fixedly mounted on the circumferential surface of the driving rod 33, and the collecting rod 37 contacts the collecting bucket 32. The output groove 38 is opened at the bottom of the collecting bucket 32, so that the pests on the inner wall of the collecting bucket 32 ​​are moved to the output groove 38 for output for subsequent processing.

[0029] When the present embodiment is working, nutrient solution is added to the liquid storage tank 21, and the trigger block 12 moves to contact the knob 24 so that the knob 24 rotates. The knob 24 rotates to open the switch valve 23, and the nutrient solution is sprayed through the nozzle 22. Regular spraying of the nutrient solution can keep the substrate moist, create a good moisture environment for the plant roots, and avoid the substrate from being too dry or too wet to cause damage to the root system. The output end of the servo motor 25 rotates to drive the No. 1 belt to drive the rotating rod 26 to rotate, and the rotating rod 26 rotates to drive the stirring blade 27 to rotate. Various chemical substances in the nutrient solution are sprayed. The compounds may precipitate when left still for a long time, resulting in too high a concentration at the bottom and too low a concentration at the top. The rotation of the stirring blade 27 can fully mix these compounds, maintain the uniformity of the nutrient solution, and ensure that the plant roots can be exposed to balanced nutrients. The rotation of the rotating rod 26 drives the connecting rod 28 to rotate, and the rotation of the connecting rod 28 drives the scraper 29 to rotate. The bottom of the inner wall of the liquid storage tank 21 used for a long time is prone to form a dirt layer. Regular cleaning of the scraper 29 can avoid the accumulation of dirt, keep the environment in the tank clean, and reduce potential harm to seedling cultivation; Pests are attracted by the insect trap lamp 35, and the pests that fall on the electric grid 34 will be electrocuted and then fall into the funnel 31 and enter the collecting bucket 32 ​​for collection, which can reduce the damage of pests to seedlings, improve the growth quality and survival rate of seedlings, and lay a good foundation for subsequent planting and production. The rotation of the rotating rod 26 drives the driving rod 33 to rotate, and the rotation of the driving rod 33 drives the scraper 36 to rotate. The rotation of the scraper 36 collects the pests on the inner wall of the funnel 31 to prevent them from accumulating on the inner wall of the funnel 31 and causing environmental impact. The rotation of the driving rod 33 drives the collecting rod 37 to rotate at the same time. The collection rod 37 rotates so that the pests on the inner wall of the collecting bucket 32 ​​are moved to the output slot 38 for output for subsequent processing.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature-controlled seedling raising device for agricultural planting, comprising a greenhouse (1), a driving frame (2) and a gantry (20), characterized in that: The driving frame (2) is arranged inside the greenhouse (1), the gantry frame (20) is arranged inside the greenhouse (1), and also includes a seedling raising device; The seedling raising device comprises a rotating frame (3), a seedling raising frame (4), a sliding frame (5), a seedling raising basin (6), a hollow block (7), a limiting rod (8), a toggle rod (9), a water control plate (10), an arc plate (11) and a trigger block (12); the rotating frame (3) is fixedly mounted on the output end of the driving frame (2); the seedling raising frame (4) is rotatably mounted on the inner wall of the rotating frame (3); the sliding frame (5) is slidably mounted on the inner wall of the seedling raising frame (4); the seedling raising basin (6) is arranged on the inner wall of the sliding frame (5); the hollow block (7) is fixedly mounted on the inner wall of the seedling raising frame (4); the limiting rod (8) is slidably mounted on the inner wall of the hollow block (7); the toggle rod (9) is slidably mounted on the circumferential surface of the driving frame (2); the water control plate (10) is slidably mounted on the inner wall of the seedling raising frame (4); the arc plate (11) is fixedly mounted on the bottom of the water control plate (10); and the trigger block (12) is fixedly mounted on the surface of the rotating frame (3); Wherein, a spraying device for irrigating the seedlings and a protective device for repelling insects on the seedlings are arranged above the driving frame (2).

2. A temperature-controlled seedling raising device for agricultural planting according to claim 1, characterized in that: The outer wall of the sliding frame (5) is provided with a docking groove, the inner wall of the seedling raising frame (4) is provided with a drainage hole, a No. 1 spring is provided between the limit rod (8) and the hollow block (7), and a No. 2 spring is provided between the water control plate (10) and the seedling raising frame (4).

3. A temperature-controlled seedling raising device for agricultural planting according to claim 2, characterized in that: The spraying device comprises a liquid storage tank (21), a spray head (22), a switch valve (23) and a rotary knob (24); the liquid storage tank (21) is fixedly mounted on the inner wall of the gantry (20); the spray head (22) is arranged at the bottom of the liquid storage tank (21); the spray head (22) is communicated with the liquid storage tank (21); the switch valve (23) is arranged on the surface of the spray head (22); the rotary knob (24) is rotatably mounted on the surface of the switch valve (23); and a first torsion spring is arranged between the rotary knob (24) and the switch valve (23).

4. A temperature-controlled seedling raising device for agricultural planting according to claim 3, characterized in that: The spraying device further comprises a servo motor (25), a rotating rod (26) and a stirring blade (27); the fixed end of the servo motor (25) is fixedly mounted on the top of the liquid storage tank (21); one side of the rotating rod (26) is rotatably mounted on the inner wall of the liquid storage tank (21); the other side of the rotating rod (26) is transmission-connected to the output end of the servo motor (25) via a No. 1 belt; and the stirring blade (27) is fixedly mounted on the circumferential surface of the rotating rod (26).

5. A temperature-controlled seedling raising device for agricultural planting according to claim 4, characterized in that: The spraying device further comprises a connecting rod (28) and a scraper (29), wherein the connecting rod (28) is fixedly mounted on the bottom of the rotating rod (26), and the scraper (29) is fixedly mounted on the surface of the connecting rod (28), and the scraper (29) is in contact with the liquid storage tank (21).

6. A temperature-controlled seedling raising device for agricultural planting according to claim 5, characterized in that: The protective device comprises a round rod (30), a funnel (31) and a collecting hopper (32); the round rod (30) is fixedly mounted on the top of the liquid storage tank (21); the funnel (31) is fixedly mounted on the circumferential surface of the round rod (30); and the collecting hopper (32) is fixedly mounted on the bottom of the funnel (31).

7. A temperature-controlled seedling raising device for agricultural planting according to claim 6, characterized in that: The protective device comprises a driving rod (33), an electric grid (34) and an insect attractant lamp (35); the driving rod (33) is fixedly mounted on the top of the rotating rod (26); the electric grid (34) is arranged on the circumferential surface of the round rod (30); and the insect attractant lamp (35) is fixedly mounted on the top of the round rod (30).

8. A temperature-controlled seedling raising device for agricultural planting according to claim 7, characterized in that: The protective device further comprises a scraper (36), a collecting rod (37) and an output groove (38); the scraper (36) is fixedly mounted on the circumferential surface of the driving rod (33); the scraper (36) is in contact with the funnel (31); the collecting rod (37) is fixedly mounted on the circumferential surface of the driving rod (33); the collecting rod (37) is in contact with the collecting bucket (32); and the output groove (38) is provided at the bottom of the collecting bucket (32).

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