Tobacco seedling raising device and seedling raising method

Abstract

The invention relates to a tobacco seedling raising device and method, and belongs to the technical field of tobacco seedling raising, the tobacco seedling raising device comprises a floating seedling pond, a self-walking seedling raising plate and an automatic seeder, the floating seedling pond is arranged in a greenhouse, and the floating seedling pond is filled with a culture solution; the self-walking seedling raising plate is provided with a plurality of paddle wheels, and the paddle wheels rotate to drive the self-walking seedling raising plate to do directional reciprocating motion in the floating seedling pond; the automatic seeding machine is arranged at one end of the floating seedling pond in a sliding mode, the sliding direction of the automatic seeding machine is perpendicular to the moving direction of the self-walking seedling raising trays, the automatic seeding machine fills the self-walking seedling raising trays with culture media and automatically opens holes and seeds seeds, and then the automatic seeding machine conveys the self-walking seedling raising trays into the floating seedling pond; the technical problem that in the prior art, during large-scale batch tobacco breeding, floating seedling raising plates need to be manually placed in a floating pond, and consequently the labor cost is increased can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of tobacco seedling cultivation, and in particular relates to a tobacco seedling cultivation device and a seedling cultivation method. Background Art

[0002] Tobacco seedling cultivation, in order to control the germination rate and variety stability, mostly adopts centralized seedling cultivation. Floating seedling cultivation is a centralized seedling cultivation method. Floating seedling cultivation uses multiple seedling trays floating on the culture medium for seedling cultivation.

[0003] The existing patent with application number 202420283487.8 discloses a tobacco floating seedling tray for cultivating strong seedlings, including a seedling tray main body with a rectangular plate structure, a plurality of seedling holes evenly distributed on the upper surface of the seedling tray main body, a water absorption hole penetrating the seedling tray main body is provided in the center of the bottom of the seedling hole, and a plurality of air holes are also penetrated on the seedling tray main body, the seedling holes are in an inverted trapezoidal structure, and the air holes are in a truncated cone structure; bosses are also provided at the four corners of the bottom of the seedling tray main body, and the bosses are in an L-shaped structure.

[0004] The prior art has the following problems:

[0005] After sowing, the floating seedling trays need to be manually transferred to the seedling pond and arranged neatly to obtain full space utilization. Because the breeding period is relatively fixed, a large number of personnel are required to operate in large-scale batch breeding to shorten the sowing cycle, which will lead to increased labor costs. Summary of the invention

[0006] The invention provides a tobacco seedling raising device and a seedling raising method, which can solve the technical problem in the prior art that during large-scale batch breeding of tobacco, floating seedling raising trays need to be manually placed in a floating pool, resulting in increased labor costs.

[0007] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0008] The present application provides a tobacco seedling raising device, which includes a floating seedling pool, a self-propelled seedling tray and an automatic seeder. The floating seedling pool is opened in a greenhouse and is filled with a culture solution. The self-propelled seedling tray has a plurality of paddle wheels, and the rotation of the paddle wheels drives the self-propelled seedling tray to move back and forth in the floating seedling pool in a directional manner. The automatic seeder is slidably arranged at one end of the floating seedling pool, and the sliding direction of the automatic seeder is perpendicular to the moving direction of the self-propelled seedling tray. The automatic seeder fills the self-propelled seedling tray with culture medium, automatically opens holes and sows seeds, and then the automatic seeder transports the self-propelled seedling tray to the floating seedling pool.

[0009] Through the above technical scheme, an automatic seeder is used to automatically fill the self-propelled seedling tray with culture medium and sow seeds, and then the self-propelled seedling tray is automatically moved and arranged in the floating seedling pool, which improves the degree of automation of tobacco seedling cultivation and reduces labor costs.

[0010] In the present invention, the self-propelled seedling tray is connected with a plurality of soft magnetic sheets on both sides along its moving direction, and two adjacent self-propelled seedling trays are adhered to each other through the soft magnetic sheets. When the two adjacent self-propelled seedling trays move in opposite directions, the two adjacent self-propelled seedling trays are separated from each other.

[0011] Through the above technical solution, the soft magnetic sheet is adopted to improve the positioning stability of the self-propelled seedling tray.

[0012] In the present invention, the tobacco seedling raising device further comprises a liquid replenishing tank and a liquid replenishing box, wherein the liquid replenishing tank is connected with the floating seedling pool; the liquid replenishing box replenishes the culture solution into the liquid replenishing tank and keeps the liquid level of the culture solution at a constant level.

[0013] Through the above technical scheme, the automatic replenishment of the culture solution in the floating seedling pool is realized by using the liquid replenishment box and the liquid replenishment tank, thereby improving the degree of automation in the tobacco seedling raising process.

[0014] In the present invention, the self-propelled seedling tray is connected to a plurality of lifting rods, and when the lifting rods are extended, the paddle wheels are suspended in the culture solution, and the plurality of paddle wheels are driven independently.

[0015] Through the above technical solution, the self-propelled seedling tray is raised by a lifting rod. When the paddle wheel is suspended in the culture solution, the independent idling of the paddle wheel can stir the culture solution, avoiding local precipitation of the culture solution and uneven nutrients, and improving the utilization efficiency of the culture solution.

[0016] In the present invention, the above-mentioned tobacco seedling raising device also includes multiple photovoltaic panels and multiple xenon lamps. The photovoltaic panels are connected to the top of the greenhouse, and the photovoltaic panels are connected to the energy storage device; the xenon lamps are connected to the inside of the greenhouse, and the xenon lamps are electrically connected to the energy storage device.

[0017] Through the above technical solution, photovoltaic panels are used to power xenon lamps, which are used to simulate sunlight, providing a stable lighting environment for tobacco seedling cultivation, making it easier to fine-tune the light intensity of the tobacco seedlings.

[0018] In the present invention, the self-propelled seedling tray is connected to a solar panel, which converts the light energy irradiated by the xenon lamp into electrical energy. The self-propelled seedling tray is also connected to an electric control module and a drive motor. The solar panel supplies power to the electric control module, and the electric control module stores electrical energy and supplies power to the drive motor. The drive motor is connected to the paddle wheel transmission.

[0019] Through the above technical solution, solar panels are used to power the self-propelled seedling tray, which improves the wireless degree and endurance time of the self-propelled seedling tray.

[0020] In the present invention, the above-mentioned tobacco seedling raising device also includes a plurality of monitoring components and laser receivers. The monitoring components are connected to the side of the floating seedling pond, and a plurality of laser transmitters are connected to the monitoring components layer by layer; the laser receiver is connected to the side wall of the greenhouse, and the laser receiver is arranged corresponding to the laser transmitter, and the laser receiver is communicatively connected to the xenon lamp.

[0021] Through the above technical solution, laser detection is used to identify the growth height of tobacco seedlings, thereby reasonably adjusting the light intensity and monitoring whether the nutrient supply of the culture solution is uniform.

[0022] The present application also provides a tobacco seedling raising method, which uses the above-mentioned tobacco seedling raising device and further includes the following steps:

[0023] Step S1: pretreating seeds and preparing culture medium;

[0024] Step S2: using an automatic seeder to sequentially fill the culture medium and seeds into the self-propelled seedling tray, and using a conveyor belt to transport the self-propelled seedling tray to the floating seedling pool;

[0025] Step S3: using the mobile control terminal, wirelessly controlling the self-propelled seedling tray to move in a straight line along the floating seedling pool in a direction away from the automatic seeder, repeating step 2 until a plurality of self-propelled seedling trays are arranged in a row, wirelessly controlling the lifting rod to extend to support the self-propelled seedling tray, and then horizontally moving the automatic seeder to place the next row of self-propelled seedling trays;

[0026] Step S4: using a monitoring component to identify the height of the tobacco seedlings, and adjusting the illumination intensity of the xenon lamp when the number of signals received by the laser receiver from the laser transmitter changes.

[0027] Through the above technical scheme, the use of automated sowing and automated placement of seedling trays in the floating seedling pool reduces the labor cost during sowing, and the use of monitoring components to identify the height of tobacco seedlings improves the degree of automation in the tobacco seedling raising process, further reducing labor costs.

[0028] In the present invention, the above step S4 also includes:

[0029] When the time difference between multiple laser receivers at the same height losing their optical signals is greater than a preset value, the paddle wheels under all the self-propelled seedling trays are synchronously started to stir the culture solution.

[0030] Through the above technical solution, a detection component is used to identify the height difference of tobacco seedlings in different areas, and then the culture solution is stirred by idling the paddle wheel, thereby achieving sufficient flow of the nutrient solution and improving the utilization efficiency of the nutrient solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 An axonometric diagram of a tobacco seedling raising device provided in an embodiment of the present invention;

[0033] Figure 2 An axonometric view of a self-propelled seedling tray provided in an embodiment of the present invention;

[0034] Figure 3 An exploded view of a self-propelled seedling tray provided in an embodiment of the present invention;

[0035] Figure 4 A cross-sectional view of a self-propelled seedling tray provided in an embodiment of the present invention placed in a floating seedling pool;

[0036] Figure 5 A front view of a tobacco seedling raising device provided by an embodiment of the present invention;

[0037] Figure 6 for Figure 5 Sectional view at AA in the middle;

[0038] Figure 7 for Figure 5 Sectional view at the middle BB;

[0039] Figure 8 for Figure 7 A local enlarged view of point C in FIG.

[0040] Fig. 9 A top view of a tobacco seedling raising device provided by an embodiment of the present invention;

[0041] Fig.10 for Fig. 9 Sectional view at DD in the figure;

[0042] Fig.11 for Fig.10 A partial enlarged view of point E in the figure.

[0043] Icons: 1-self-propelled seedling tray; 101-culture medium; 102-upper shell; 103-lower shell; 104-paddle wheel; 105-drive motor; 106-electronic control module; 107-soft magnetic sheet; 108-solar panel; 109-lifting rod; 2-automatic seeder; 201-seed box; 202-hole box; 203-soil filling box; 3-floating seedling pool; 301-culture solution; 302-replenishment tank; 303-replenishment tank; 3031-replenishment tube; 4-monitoring component; 401-laser transmitter; 402-laser receiver; 501-xenon lamp; 502-photovoltaic panel; 503-energy storage device. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0045] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be welding, bolt connection, or riveting; it can be fixed connection, detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] Example:

[0049] Please refer to Figures 1 to 11 , Figures 1 to 11 An embodiment of the present application is shown.

[0050] This embodiment provides a tobacco seedling raising device, such as Figure 1As shown, it includes a floating seedling pool 3, a self-propelled seedling tray 1 and an automatic seeder 2. The floating seedling pool 3 is opened in the greenhouse and is filled with a culture solution 301; Figure 2 and Figure 3 As shown, the self-propelled seedling tray 1 has a plurality of paddle wheels 104 installed on the lower shell 103, and the driving motor 105 on the lower shell 103 drives the paddle wheels 104 to rotate, and the rotation of the paddle wheels 104 drives the self-propelled seedling tray 1 to move back and forth in the floating seedling pool 3 along the length direction; the automatic seeder 2 is slidably arranged at one end of the floating seedling pool 3, and the sliding direction of the automatic seeder 2 is perpendicular to the moving direction of the self-propelled seedling tray 1. The automatic seeder 2 fills the culture medium 101 into the self-propelled seedling tray 1 and automatically opens holes and sows seeds, and then the automatic seeder 2 transports the self-propelled seedling tray 1 to the floating seedling pool 3.

[0051] When in use, the prepared nutrient soil is filled in the soil filling box 203 as the culture medium 101. After the self-propelled seedling tray 1 enters the bottom of the soil filling box 203 through the conveyor belt, the culture medium 101 falls into the self-propelled seedling tray 1. There is a rotating hole-opening roller in the hole-opening box 202. When the self-propelled seedling tray 1 enters the bottom of the hole-opening box 202, the hole-opening roller opens holes for sowing on the culture medium 101. There is a seed-dividing roller with a plurality of small holes in the seed box 201. After the seeds are filled in, 1 to 3 tobacco seedlings enter the small holes each time, and fall into the holes opened in the culture medium 101 driven by the rotation of the seed-dividing roller, thereby completing the automatic sowing. After sowing, the self-propelled seedling tray 1 that has completed sowing continues to slide into the floating seedling pool 3 under the transmission of the conveyor belt, and then sends a wireless signal through the remote control. After the electric control module 106 connected to the lower shell 103 receives the signal, the drive motor 105 is started through the battery of the electric control module 106. The four drive motors 105 drive the paddle wheel 104 to drive the self-propelled seedling tray 1 to move forward in the floating seedling pool 3. After reaching the approximate position, it is closed by the remote control, and then the next self-propelled seedling tray 1 is operated. When the last self-propelled seedling tray 1 in a row is put in and the discharge gap is adjusted, the self-propelled seedling trays 1 in a row are closely arranged.

[0052] It should be noted that the technology of wireless remote control starting the drive motor 105 does not fall within the scope of protection of this application. Those skilled in the art can obtain a variety of wireless remote control methods through public technologies, which will not be specifically described or further limited here.

[0053] Through the above technical scheme, the automatic seeder 2 is used to automatically fill the self-propelled seedling tray 1 with the culture medium 101 and sow the seeds, and then the self-propelled seedling tray 1 is automatically moved and arranged in the floating seedling pool 3, thereby improving the degree of automation of tobacco seedling cultivation and reducing labor costs.

[0054] As a preferred implementation method, Figure 3As shown, the upper shell 102 of the self-propelled seedling tray 1 is connected with a plurality of soft magnetic sheets 107 on both sides along its moving direction, and two adjacent self-propelled seedling trays 1 are adhered to each other through the soft magnetic sheets 107. When the two adjacent self-propelled seedling trays 1 move in opposite directions, the two adjacent self-propelled seedling trays 1 are separated from each other.

[0055] During use, in order to prevent the self-propelled seedling raising tray 1 that enters later from colliding with the self-propelled seedling raising tray 1 that enters earlier, causing the arrangement thereof to shift, a soft magnetic sheet 107 is used for auxiliary positioning.

[0056] It should be noted that the soft magnetic sheet 107 has a weak magnetic force, and its magnetic force will not prevent the two self-propelled seedling trays 1 from separating from each other when they actively move in opposite directions. The active movement is that the paddle wheels 104 on the two self-propelled seedling trays 1 rotate in opposite directions. When the two self-propelled seedling trays 1 are attached to each other, the paddle wheel 104 on a single self-propelled seedling tray 1 rotates and the two will not separate.

[0057] Through the above technical solution, the soft magnetic sheet 107 is used to improve the positioning stability of the self-propelled seedling tray 1.

[0058] As a preferred implementation method, Figures 5 to 11 As shown, the tobacco seedling raising device further includes a liquid replenishing tank 302 and a liquid replenishing tank 303. Figure 8 As shown, the liquid replenishment tank 302 is connected to the floating seedling pool 3; Fig.11 As shown, the liquid replenishment tank 303 replenishes the culture solution 301 into the liquid replenishment tank 302, and the liquid level of the culture solution 301 is kept constant by the liquid seal formed by the lower pipe opening of the liquid replenishment tube 3031 and the liquid surface of the culture solution 301.

[0059] Through the above technical solution, the liquid replenishment box 303 and the liquid replenishment tank 302 are used to realize the automatic replenishment of the culture solution 301 in the floating seedling pool 3, thereby improving the degree of automation in the tobacco seedling raising process.

[0060] As a preferred implementation method, Figure 3 and Figure 4 As shown, a plurality of lifting rods 109 are connected through the lower shell 103 of the self-propelled seedling tray 1. When the lifting rods 109 are extended, the paddle wheels 104 are suspended in the culture solution 301, and the plurality of paddle wheels 104 are driven independently.

[0061] During use, after a row of self-propelled seedling trays 1 are in place, the lifting rods 109 are controlled to extend in batches through a remote controller.

[0062] Through the above technical solution, the self-propelled seedling tray 1 is lifted by the lifting rod 109. When the paddle wheel 104 is suspended in the culture solution 301, the independent idling of the paddle wheel 104 can stir the culture solution 301, avoiding local precipitation and uneven nutrients of the culture solution 301, and improving the utilization efficiency of the culture solution 301.

[0063] As a preferred implementation method, Figure 1 and Figure 6 As shown, the above-mentioned tobacco seedling raising device also includes multiple photovoltaic panels 502 and multiple xenon lamps 501. The photovoltaic panels 502 are connected to the top of the greenhouse, and the photovoltaic panels 502 are connected to the energy storage device 503; the xenon lamps 501 are connected to the inner side of the greenhouse, and the xenon lamps 501 are electrically connected to the energy storage device 503.

[0064] The spectrum of xenon lamp 501 is very close to natural sunlight, covering a wide range of wavelengths from ultraviolet rays to infrared rays, which can provide tobacco seedlings with lighting conditions that are very similar to the natural environment. At the same time, xenon lamp 501 generates a lot of heat, which is beneficial to increase the room temperature in the greenhouse. Combined with active cooling measures such as ventilation, it is easier to control the temperature in the greenhouse. On the contrary, if the temperature in the greenhouse is low, it will be more difficult to actively raise the temperature.

[0065] It should be noted that, especially in basin areas with short sunshine hours, if only sunlight is used, the illumination time and intensity of tobacco seedlings are short, which is not conducive to the growth of tobacco seedlings. However, by using photovoltaic energy storage to power the xenon lamp 501, a more stable light intensity can be provided, and the light intensity can be adjusted by controlling the input power of the xenon lamp 501, thereby adapting to the light requirements of tobacco seedlings in different growth periods.

[0066] Through the above technical solution, the photovoltaic panel 502 is used to power the xenon lamp 501, and the xenon lamp 501 is used to simulate sunlight, thereby providing a stable lighting environment for tobacco seedling cultivation and facilitating fine adjustment of the light intensity of the tobacco seedlings.

[0067] As a preferred implementation method, Figure 2 and Figure 3 As shown, the upper shell 102 of the self-propelled seedling tray 1 is connected to a solar panel 108, which converts the light energy irradiated by the xenon lamp 501 into electrical energy. The self-propelled seedling tray 1 is also connected to an electric control module 106 and a drive motor 105. The solar panel 108 supplies power to the electric control module 106, and the electric control module 106 stores electrical energy and supplies power to the drive motor 105. The drive motor 105 is connected to the paddle wheel 104 in a transmission manner.

[0068] Through the above technical solution, the solar panel 108 is used to power the self-propelled seedling tray 1, thereby improving the wireless degree and endurance time of the self-propelled seedling tray 1.

[0069] As a preferred implementation method, Figure 1 and Figure 6 As shown, the above-mentioned tobacco seedling raising device also includes a plurality of monitoring components 4 and a laser receiver 402. The monitoring component 4 is connected to the side of the floating seedling pool 3, and three laser transmitters 401 are connected to the monitoring component 4 layer by layer; the laser receiver 402 is connected to the side wall of the greenhouse, and the laser receiver 402 is arranged corresponding to the laser transmitter 401, and the laser receiver 402 is communicatively connected to the xenon lamp 501.

[0070] The heights of the three laser emitters 401 correspond to the heights of the tobacco seedlings in different growth cycles. At the same time, the laser emitters 401 are connected by a clamp ring and can also be adjusted in height according to different varieties of tobacco seedlings. When the tobacco seedlings grow to the height corresponding to each stage, the tobacco seedlings will block the laser signal, and then the laser receiver 402 will lose the signal. Every time the signal of a laser receiver 402 is lost, the input power of the xenon lamp 501 in the corresponding area is increased by one level to meet the increasing lighting needs of the tobacco seedlings.

[0071] Through the above technical solution, the growth height of the tobacco seedlings is identified by laser detection, and then the light intensity is reasonably adjusted and the nutrient supply of the culture solution 301 is monitored to see whether it is uniform.

[0072] This embodiment also provides a tobacco seedling raising method, which uses the above-mentioned tobacco seedling raising device and also includes the following steps:

[0073] Step S1: pre-treating seeds and preparing culture medium 101;

[0074] Step S2: using the automatic seeder 2 to sequentially fill the culture medium 101 and the seeds into the self-propelled seedling tray 1, and using the conveyor belt to transport the self-propelled seedling tray 1 to the floating seedling pool 3;

[0075] Step S3: using the mobile control terminal, wirelessly controlling the self-propelled seedling tray 1 to move in a straight line along the floating seedling pool 3 in a direction away from the automatic seeder 2, repeating step 2 until a plurality of self-propelled seedling trays 1 are arranged in a row, wirelessly controlling the lifting rod 109 to extend to support the self-propelled seedling tray 1, and then horizontally moving the automatic seeder 2 to place the next row of self-propelled seedling trays 1;

[0076] Step S4: The height of the tobacco seedlings is identified by using the monitoring component 4, and when the number of signals received by the laser receiver 402 from the laser transmitter 401 changes, the illumination intensity of the xenon lamp 501 is adjusted.

[0077] Through the above technical scheme, the use of automated sowing and automated placement of seedling trays in the floating seedling pool 3 reduces the labor cost during sowing, and the use of the monitoring component 4 to identify the height of the tobacco seedlings improves the degree of automation of the tobacco seedling raising process and further reduces the labor cost.

[0078] As a preferred implementation, the above step S4 further includes:

[0079] When the time difference between multiple laser receivers 402 at the same height losing light signals is greater than a preset value, the paddle wheels 104 under all the self-propelled seedling trays 1 are synchronously started to stir the culture solution 301.

[0080] Through the above technical solution, the detection component is used to identify the height difference of tobacco seedlings in different areas, and then the paddle wheel 104 is moved to idle and stir the culture solution 301, so as to achieve sufficient flow of the nutrient solution and improve the utilization efficiency of the nutrient solution.

[0081] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A tobacco seedling raising device, It is characterized in that include: A floating seedling pool (3) is provided in the greenhouse, wherein the floating seedling pool (3) is filled with a culture solution (301); A plurality of self-propelled seedling raising trays (1) are provided with a plurality of paddle wheels (104), wherein the rotation of the paddle wheels (104) drives the self-propelled seedling raising trays (1) to move reciprocally in a directional manner in the floating seedling pool (3); An automatic seeder (2) is slidably disposed at one end of the floating seedling pool (3); the sliding direction of the automatic seeder (2) is perpendicular to the moving direction of the self-propelled seedling tray (1); the automatic seeder (2) fills the self-propelled seedling tray (1) with a culture medium (101), automatically opens holes and sows seeds; and then the self-propelled seedling tray (1) is transported to the floating seedling pool (3) by the automatic seeder (2).

2. The tobacco seedling raising device according to claim 1, It is characterized in that The self-propelled seedling tray (1) is connected to a plurality of soft magnetic sheets (107) on both sides along the moving direction thereof; two adjacent self-propelled seedling trays (1) are attached to each other via the soft magnetic sheets (107); when the two adjacent self-propelled seedling trays (1) move in opposite directions, the two adjacent self-propelled seedling trays (1) are separated from each other.

3. The tobacco seedling raising device according to claim 2, It is characterized in that Also includes: A liquid replenishment tank (302) connected to the floating seedling pool (3); The liquid replenishment tank (303) replenishes the culture solution (301) into the liquid replenishment tank (302) and maintains the liquid level of the culture solution (301) in the floating seedling pool (3).

4. The tobacco seedling raising device according to claim 3, It is characterized in that The self-propelled seedling tray (1) is connected to a plurality of lifting rods (109); when the lifting rods (109) extend from the lower surface of the self-propelled seedling tray (1), the paddle wheels (104) are suspended in the culture solution (301), and the plurality of paddle wheels (104) are driven independently.

5. The tobacco seedling raising device according to claim 4, It is characterized in that Also includes: A plurality of photovoltaic panels (502) are connected to the top of the greenhouse, wherein the photovoltaic panels (502) are connected to an energy storage device (503); A plurality of xenon lamps (501) are connected to the inner side of the greenhouse, and the xenon lamps (501) are electrically connected to the energy storage device (503).

6. The tobacco seedling raising device according to claim 5, It is characterized in that The self-propelled seedling tray (1) is connected to a solar panel (108), and the solar panel (108) converts light energy irradiated by the xenon lamp (501) into electrical energy. The self-propelled seedling tray (1) is also connected to an electric control module (106) and a drive motor (105). The solar panel (108) supplies power to the electric control module (106), and the electric control module (106) stores the electrical energy and supplies power to the drive motor (105). The drive motor (105) is drivingly connected to the paddle wheel (104).

7. The tobacco seedling raising device according to claim 6, It is characterized in that Also includes: A plurality of monitoring components (4) connected to the side of the floating seedling pool (3), wherein a plurality of laser emitters (401) are connected layer by layer to the monitoring components (4); The laser receiver (402) is connected to the side wall of the greenhouse, the laser receiver (402) is arranged corresponding to the laser transmitter (401), and the laser receiver (402) is communicatively connected to the xenon lamp (501).

8. A tobacco seedling raising method, It is characterized in that The tobacco seedling raising device according to claim 7 further comprises the following steps: Step S1: pretreating seeds and preparing culture medium; Step S2: using an automatic seeding machine (2) to sequentially fill the culture medium and seeds into the self-propelled seedling tray (1), and using a conveyor belt to transport the self-propelled seedling tray (1) to the floating seedling pool (3); Step S3: using the mobile control terminal, wirelessly controlling the self-propelled seedling tray (1) to move in a straight line along the floating seedling pool (3) in a direction away from the automatic seeder (2), repeating step 2 until a plurality of self-propelled seedling trays (1) are arranged in a row, the wirelessly controlled lifting rod (109) extends to support the self-propelled seedling tray (1), and then the automatic seeder (2) is moved horizontally to place the next row of self-propelled seedling trays (1); Step S4: using the monitoring component (4) to identify the height of the tobacco seedlings, and when the number of signals received by the laser receiver (402) from the laser transmitter (401) changes, adjusting the illumination intensity of the xenon lamp (501).

9. The tobacco seedling raising method according to claim 8, It is characterized in that The step S4 further comprises: When the time difference between multiple laser receivers (402) at the same height losing light signals is greater than a preset value, the paddle wheels (104) below all the self-propelled seedling trays (1) are synchronously started to stir the culture solution (301).

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