Plant planting and seedling raising device and use method

Abstract

The invention discloses a plant planting and seedling raising device and a use method. A seedling tray is horizontally and slidably connected to the interior of a machine body in the device; the matrix filling box is arranged on one side of the machine body; the soil moisture sensor is fixedly mounted in the matrix filling box; the atomizing pieces are arranged on one side of the matrix filling box, and the atomizing pieces are divided into multiple groups; the quantitative soil covering pieces are arranged on the machine body and are divided into a plurality of groups; the control unit is electrically connected with the soil moisture sensor, the atomization piece and the quantitative soil covering piece, and the device can dynamically adjust the atomization time of the atomization piece and the soil covering amount of the two groups of quantitative soil covering hoppers through double detection of the soil moisture sensor and the insertion type moisture detector and in combination with the control unit; the problems that the covering soil is lost and the seeds are exposed when the matrix is full of water and the covering soil layer is difficult to infiltrate when the matrix is insufficient of water are solved, and the stability and the seedling quality in the seedling process are improved.

Description

Technical Field

[0001] This invention relates to the field of tobacco seedling cultivation technology, and in particular to a plant cultivation and seedling raising device and its usage method. Background Technology

[0002] Factory-scale seedling cultivation in tobacco production is a key step in ensuring the quality and efficiency of tobacco leaf production. Current mainstream automated seedling production lines typically include core processes such as seedling tray placement, substrate filling, pressing of the seedbed pit, precision sowing, substrate covering, and light pressing. Finally, the seedling trays are transferred to the nutrient pool for floating seedling cultivation.

[0003] In actual use, the moisture content of the substrate varies from batch to batch. Existing methods mainly create a suitable seedling environment by adding water to the substrate. However, in the soil covering process after sowing, the amount of soil covering is usually set with fixed parameters and cannot be dynamically adjusted according to the real-time moisture content of the substrate. This fixed soil covering method cannot guarantee the effective combination and stable coverage between the soil covering layer and the substrate under different conditions, thus affecting the moisture retention and wind protection during the seedling process, which has limitations.

[0004] When the substrate is sufficiently moist, if a large amount of topsoil is used, the topsoil will not be properly moistened due to insufficient water penetration between the topsoil and the underlying moist substrate. This can lead to the topsoil being blown away by the wind during subsequent operations or transport, resulting in soil loss and seed exposure. If only a small amount of topsoil is used, the moisture inside the moist substrate will penetrate the topsoil instantly, causing the compaction components to stick together. Even when the substrate moisture is just barely adequate, reducing the amount of topsoil to decrease the risk of the compaction components sticking to the substrate still results in the topsoil layer not being adequately moistened by the underlying moisture and being easily carried away by the wind. Therefore, regardless of the amount of topsoil, the existing fixed topsoil method cannot dynamically match the actual moisture content of the substrate, affecting seedling quality and process stability, and thus presents limitations. Summary of the Invention

[0005] The purpose of this invention is to provide a plant cultivation and seedling raising device and a method of using it, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plant cultivation and seedling raising device and a method of use, comprising a body, a substrate filling box, a soil moisture sensor, an atomizing component, a quantitative soil covering component, and a control unit;

[0007] The machine body has a seedling tray horizontally slidably connected inside; the substrate filling box is located on one side of the machine body; the soil moisture sensor is fixedly installed inside the substrate filling box; the atomizing element is located on one side of the substrate filling box, and there are multiple sets of atomizing elements; the quantitative soil covering element is located on the machine body, and there are multiple sets of quantitative soil covering elements; the control unit is electrically connected to the soil moisture sensor, the atomizing element, and the quantitative soil covering element respectively. The control unit is used to dynamically adjust the atomization time of the atomizing element based on the substrate moisture content detected by the soil moisture sensor. The control unit is also used to adjust the soil covering amount of different quantitative soil covering elements based on the substrate moisture content detected by the soil moisture sensor.

[0008] Preferably, a support frame is fixedly installed on one side of the machine body, the seedling tray is vertically arranged inside the support frame, and a conveying component is provided inside the machine body for horizontally conveying the seedling tray from left to right.

[0009] Preferably, the atomizing component includes a main atomizer and a secondary atomizer, the main atomizer being disposed on one side of the substrate filling box, and a secondary covering box being disposed on one side of the main atomizer.

[0010] Preferably, a pressing device is fixedly installed on one side of the secondary covering box, an insertion moisture detector is provided at the end of the pressing device, a vacuum seeding device is fixedly installed on one side of the pressing device, and the quantitative covering device includes a first quantitative covering hopper and a second quantitative covering hopper. The first quantitative covering hopper is located on one side of the vacuum seeding device, and the auxiliary atomizer is located on one side of the first quantitative covering hopper.

[0011] Preferably, a second quantitative soil covering hopper is provided on one side of the first quantitative soil covering hopper, and a flattening component is fixedly installed on one side of the second quantitative soil covering hopper.

[0012] Preferably, it includes the following steps:

[0013] S1. Place the substrate inside the substrate filling box, detect the moisture content in the substrate using a soil moisture sensor, and transmit the data to the control unit.

[0014] S2. The control unit dynamically adjusts the atomization time of the atomizing element based on the matrix moisture content;

[0015] S3. The control unit controls the amount of soil to be covered in the first quantitative soil covering hopper and the second quantitative soil covering hopper respectively according to the moisture content of the substrate.

[0016] S4. The seedling trays are conveyed into the substrate filling, pressing pit, sowing, covering soil and leveling components in sequence to complete the seedling preparation.

[0017] Preferably, in step S2, when the substrate moisture content is higher than the preset upper limit, the control unit turns off the atomizer to avoid the substrate becoming too wet; when the substrate moisture content is lower than the preset lower limit, the control unit extends the atomization time of the atomizing element to increase the substrate moisture content to the threshold range.

[0018] Preferably, in step S3, when the substrate moisture content is high, the control unit increases the amount of soil covered by the first quantitative soil covering hopper, turns off the atomizer, and reduces the amount of soil covered by the second quantitative soil covering hopper; when the substrate moisture content is low, the control unit reduces the amount of soil covered by the soil covering component and increases the atomization time of the auxiliary atomizer to ensure that the soil covering layer can be fully soaked by the underlying moisture.

[0019] Preferably, the detection signal of the insertion moisture detector is directly fed back to the control unit for real-time correction of the working parameters of the atomizing element and the quantitative soil covering element.

[0020] Preferably, the flattening force of the flattening component is adjustable, and the flattening component automatically switches the pressure mode according to the substrate moisture content and the amount of soil covering during the flattening operation.

[0021] The technical effects and advantages of this invention are as follows:

[0022] 1. This device uses a soil moisture sensor and an insertion moisture detector for dual detection, combined with a control unit, to dynamically adjust the atomization time of the atomizing element and the amount of soil covering in the two sets of quantitative soil covering hoppers. This avoids the problems of soil loss and seed exposure when the substrate is full of moisture, and the difficulty in wetting the soil layer when the substrate is insufficient, thus improving the stability of the seedling process and the quality of seedling cultivation.

[0023] 2. The control unit can dynamically adjust the atomization time according to the substrate moisture. This is mainly achieved by enhancing the water replenishment capacity through the coordinated design of the main and auxiliary atomizers. The main atomizer enables rapid moisture adjustment for large batches of substrate, while the auxiliary atomizer is used for targeted water replenishment during the initial covering of soil after sowing, mainly playing the role of binding the covering soil. Compared with the existing single water replenishment method, the water replenishment accuracy is higher, the adaptability to scenarios is more comprehensive, and the user needs are met.

[0024] 3. After adjusting the substrate moisture content through the atomizer, the quantitative soil covering device adopts a dual soil covering hopper design. The control unit adjusts the soil covering amount of the two soil covering hoppers according to the substrate moisture content, realizing differentiated control between the initial soil covering and the secondary soil covering. Combined with the adaptive switching of the pressure of the flattening device, it can reduce soil loss, seed exposure and adhesion, and meet the needs of users. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the back of the body of the present invention;

[0027] Figure 3 This is a schematic diagram of the overall working process of the seedling raising device of the present invention;

[0028] Figure 4 This is a schematic diagram of the component layout of the device of the present invention;

[0029] Figure 5 This is a dynamic adjustment diagram for high humidity conditions according to the present invention;

[0030] Figure 6 This is a diagram showing the adjustment of the low-humidity operating condition according to the present invention;

[0031] Figure 7 This is a flowchart of the dual detection control process of the present invention.

[0032] In the diagram: 1. Body; 2. Substrate filling box; 22. Soil moisture sensor; 23. Atomizing component; 24. Quantitative soil covering component. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] This invention provides, for example Figures 1 to 7 The plant cultivation and seedling raising device and its usage method shown include a body 1, a substrate filling box 2, a soil moisture sensor 22, an atomizing component 23, a quantitative soil covering component 24, and a control unit;

[0035] The machine body 1 has a seedling tray horizontally slidably connected inside; the substrate filling box 2 is set on one side of the machine body 1; the soil moisture sensor 22 is fixedly installed inside the substrate filling box 2; the atomizing element 23 is set on one side of the substrate filling box 2, and there are multiple sets of atomizing elements 23; the quantitative soil covering element 24 is set on the machine body 1, and there are multiple sets of quantitative soil covering elements 24; the control unit is electrically connected to the soil moisture sensor 22, the atomizing element 23 and the quantitative soil covering element 24 respectively. The control unit is used to dynamically adjust the atomization time of the atomizing element 23 based on the substrate moisture content detected by the soil moisture sensor 22. The control unit is also used to adjust the soil covering amount of different quantitative soil covering elements 24 based on the substrate moisture content detected by the soil moisture sensor 22.

[0036] A support frame is fixedly installed on one side of the machine body 1, and the seedling tray is vertically arranged inside the support frame. A conveyor is installed inside the machine body 1, which is used to horizontally transport the seedling tray from left to right.

[0037] The atomizing component 23 includes a main atomizer and a secondary atomizer. The main atomizer is located on one side of the substrate filling box 2, and a secondary soil covering box is located on one side of the main atomizer.

[0038] A pressing device is fixedly installed on one side of the secondary soil covering box. An insertion moisture detector is installed at the end of the pressing device. A vacuum seeding device is fixedly installed on one side of the pressing device. The quantitative soil covering device 24 includes a first quantitative soil covering hopper and a second quantitative soil covering hopper. The first quantitative soil covering hopper is located on one side of the vacuum seeding device, and the auxiliary atomizer is located on one side of the first quantitative soil covering hopper.

[0039] A second quantitative soil covering hopper is provided on one side of the first quantitative soil covering hopper, and a flattening component is fixedly installed on one side of the second quantitative soil covering hopper.

[0040] Example 1: In this example, the vertically stacked seedling trays inside the support frame are pushed one by one into the machine body 1 by a conveyor. The conveyor includes a motor, chain, sprocket, support plate, and push plate fixed on the chain. The seedling trays fall onto the support plate, and then the motor drives the sprocket to rotate, which in turn drives the chain to rotate. The push plate fixed on the chain pushes the seedling trays to move from left to right. The substrate is fed into the substrate filling box 2 by an automatic feeder. The opening of the electric valve at the discharge end is controlled by the control unit to achieve quantitative filling of the substrate into the seedling trays. The soil moisture sensor 22 inside the substrate filling box 2 is a probe-type moisture sensor that collects the substrate moisture content every 5 seconds. The data is synchronously transmitted to the control unit. The main atomizer is installed on one side of the substrate filling box 2 to quickly humidify the filled substrate. The auxiliary atomizer is set in the first quantitative soil covering hopper for targeted water replenishment of the subsequent soil covering layer. A covering box is set on one side of the substrate filling box 2. The covering box is used to cover a layer of dry substrate on the surface of the substrate after the main atomizer atomizes, so as to prevent the substrate from sticking to the compaction block. The main atomizer and auxiliary atomizer are structured as a protective shell, a water supply pipe and a nozzle. The water supply pipe is fixedly installed inside the protective shell. The nozzles are arranged in an equidistant array on the water supply pipe. The number of nozzles corresponds to the number of planting troughs on the seedling tray, which can provide targeted humidification of the substrate.

[0041] The pressing device includes a push-pull cylinder, a positioning plate, and pressing blocks. The pressing blocks are fixedly installed at the bottom of the positioning plate. There are multiple sets of pressing blocks, the number of which corresponds to the seedling troughs on the seedling tray. When the seedling tray is transported to the bottom of the pressing device, the push-pull cylinder pushes the positioning plate downward to press a deep pit on the substrate surface. The insertion-type moisture detector embedded at the end of the pressing block is inserted into the deep layer of the substrate to collect the substrate moisture content data and feed it back to the control unit for correcting subsequent parameters. After the pressing is completed, the vacuum seeding device accurately grabs tobacco seeds through vacuum adsorption and puts them into the pit. Then the seedling tray passes through the first and second quantitative soil covering hoppers in sequence. Both are spiral feeding structures with speed controlled by stepper motors. The amount and position of soil output can be adjusted to complete the initial soil covering and the secondary soil covering, respectively. Finally, the elastic silicone flattening device flattens the soil according to the corresponding pressure mode.

[0042] This invention provides, for example Figures 1 to 7 The plant cultivation and seedling raising device and its usage method shown include a body 1, a substrate filling box 2, a soil moisture sensor 22, an atomizing component 23, a quantitative soil covering component 24, and a control unit;

[0043] The machine body 1 has a seedling tray horizontally slidably connected inside; the substrate filling box 2 is set on one side of the machine body 1; the soil moisture sensor 22 is fixedly installed inside the substrate filling box 2; the atomizing element 23 is set on one side of the substrate filling box 2, and there are multiple sets of atomizing elements 23; the quantitative soil covering element 24 is set on the machine body 1, and there are multiple sets of quantitative soil covering elements 24; the control unit is electrically connected to the soil moisture sensor 22, the atomizing element 23 and the quantitative soil covering element 24 respectively. The control unit is used to dynamically adjust the atomization time of the atomizing element 23 based on the substrate moisture content detected by the soil moisture sensor 22. The control unit is also used to adjust the soil covering amount of different quantitative soil covering elements 24 based on the substrate moisture content detected by the soil moisture sensor 22.

[0044] S1. The substrate is placed inside the substrate filling box 2, and the moisture content in the substrate is detected by the soil moisture sensor 22, and the data is transmitted to the control unit.

[0045] S2. The control unit dynamically adjusts the atomization time of the atomizing element 23 based on the matrix moisture content;

[0046] S3. The control unit controls the amount of soil to be covered in the first quantitative soil covering hopper and the second quantitative soil covering hopper respectively according to the moisture content of the substrate.

[0047] S4. The seedling trays are conveyed into the substrate filling, pressing pit, sowing, covering soil and leveling components in sequence to complete the seedling preparation;

[0048] S5. Transfer the seedling trays that have been covered with soil and flattened to the nutrient pond for floating seedling cultivation.

[0049] Example 2: In this example, when the soil moisture sensor 22 detects that the substrate moisture content exceeds the threshold, the control unit activates the high humidity adaptation adjustment scheme. First, the main atomizer and the auxiliary atomizer are turned off to prevent the substrate from becoming further humidified and causing adhesion. The pressing component maintains normal operating parameters, the cylinder drives the pressing block to press the foundation pit normally, and the insertion moisture detector continuously monitors the substrate humidity to ensure that the data does not fluctuate abnormally.

[0050] After vacuum seeding is completed, the control unit increases the speed of the screw of the first quantitative soil covering hopper, increasing the soil covering amount to 120% of the normal amount. The thicker initial soil covering layer absorbs excess moisture from the lower substrate, preventing the seeds from being soaked in water. Subsequently, the speed of the screw of the second quantitative soil covering hopper is reduced by 20%, and the soil covering amount is reduced to 80% of the normal amount. This reduces the thickness of the upper soil covering layer, lowers the risk of adhesion during the flattening operation, and reduces the difficulty of seedling emergence. Finally, the flattening device automatically switches to a light-pressure mode, ensuring a flat soil covering layer while preventing substrate adhesion, thus meeting the user's needs.

[0051] This invention provides, for example Figures 1 to 7 The plant cultivation and seedling raising device and its usage method shown include a body 1, a substrate filling box 2, a soil moisture sensor 22, an atomizing component 23, a quantitative soil covering component 24, and a control unit;

[0052] The machine body 1 has a seedling tray horizontally slidably connected inside; the substrate filling box 2 is set on one side of the machine body 1; the soil moisture sensor 22 is fixedly installed inside the substrate filling box 2; the atomizing element 23 is set on one side of the substrate filling box 2, and there are multiple sets of atomizing elements 23; the quantitative soil covering element 24 is set on the machine body 1, and there are multiple sets of quantitative soil covering elements 24; the control unit is electrically connected to the soil moisture sensor 22, the atomizing element 23 and the quantitative soil covering element 24 respectively. The control unit is used to dynamically adjust the atomization time of the atomizing element 23 based on the substrate moisture content detected by the soil moisture sensor 22. The control unit is also used to adjust the soil covering amount of different quantitative soil covering elements 24 based on the substrate moisture content detected by the soil moisture sensor 22.

[0053] S1. The substrate is placed inside the substrate filling box 2, and the moisture content in the substrate is detected by the soil moisture sensor 22, and the data is transmitted to the control unit.

[0054] S2. The control unit dynamically adjusts the atomization time of the atomizing element 23 based on the matrix moisture content;

[0055] S3. The control unit controls the amount of soil to be covered in the first quantitative soil covering hopper and the second quantitative soil covering hopper respectively according to the moisture content of the substrate.

[0056] S4. The seedling trays are conveyed into the substrate filling, pressing pit, sowing, covering soil and leveling components in sequence to complete the seedling preparation;

[0057] S5. Transfer the seedling trays that have been covered with soil and flattened to the nutrient pond for floating seedling cultivation.

[0058] In step S2, when the substrate moisture content is higher than the preset upper limit, the control unit turns off the atomizer to avoid the substrate becoming too wet; when the substrate moisture content is lower than the preset lower limit, the control unit extends the atomization time of the atomizing element 23 to increase the substrate moisture content to the threshold range.

[0059] In step S3, when the substrate moisture content is high, the control unit increases the amount of soil covered by the first quantitative soil covering hopper, turns off the atomizing element 23, and reduces the amount of soil covered by the second quantitative soil covering hopper; when the substrate moisture content is low, the control unit reduces the amount of soil covered by the soil covering element and increases the atomization time of the auxiliary atomizer to ensure that the soil covering layer can be fully moistened by the lower layer of moisture.

[0060] The detection signal from the insertion moisture detector is directly fed back to the control unit to correct the working parameters of the atomizing element 23 and the quantitative soil covering element 24 in real time.

[0061] The flattening force of the flattening component is adjustable, and the flattening component automatically switches the pressure mode according to the moisture content of the substrate and the amount of soil covering during the flattening operation.

[0062] Example 3: In this example, when the soil moisture sensor 22 detects that the substrate moisture content is low, the control unit activates the low-humidity adaptation adjustment scheme. First, the main atomizer is controlled to continuously atomize for 8 seconds to quickly replenish water to the substrate before filling. After the substrate moisture content rises to the threshold, it switches to intermittent atomization mode to maintain the substrate humidity within the threshold range.

[0063] When the pressing device is operating normally, the insertion moisture detector provides real-time feedback on the substrate moisture. If the detected substrate moisture content is still too low, the control unit extends the atomization time of the secondary atomizer. After vacuum seeding, the speed of the screw of the first quantitative covering hopper is reduced, and the covering amount is reduced to 80% of the normal amount. At the same time, the secondary atomizer is activated, extending the atomization time to 1.5 times the normal time to provide targeted watering to the initial covering layer, ensuring that the covering layer is fully moistened by the underlying substrate moisture. The second quantitative covering hopper maintains the normal covering amount to ensure the seed fixation effect. The pressing device switches to a light-to-slight-heavy setting to compact the covering layer to reduce moisture evaporation and meet the user's needs.

[0064] In this article, all thresholds are as follows. It should be noted that all thresholds in this article can be freely adjusted according to requirements:

[0065] 1. Threshold range of substrate moisture content; The suitable moisture content of tobacco seedling substrate is usually 60% to 70%, so the preset upper limit of moisture content is set to 75%, the preset lower limit of moisture content is set to 55%, and the threshold range is 55% to 75%.

[0066] The threshold range of substrate moisture content means that after the control unit detects the substrate moisture content through the soil moisture sensor 22, it needs to adjust the moisture content to a suitable range for seedling cultivation. When the substrate moisture content is lower than the preset lower limit, the control unit extends the atomization time of the atomizing element 23 to raise the substrate moisture content to the threshold range in order to ensure the seedling cultivation effect. The core objective of the dynamic adjustment of the atomizing element 23 is to maintain the substrate moisture content within the threshold range and ensure the stability of the seedling cultivation environment.

[0067] 2. The preset upper limit of substrate moisture content; this means that the control unit determines whether the substrate is too wet. If this value is exceeded, it means that the substrate has too much moisture, and atomization must be stopped immediately to avoid problems such as adhesion and seed soaking caused by excessive moisture. When the soil moisture sensor 22 detects that the substrate moisture content is higher than the preset upper limit, the control unit immediately shuts off the atomizer to prevent the substrate from becoming more humid. This threshold is the stopping trigger condition for the atomization action, directly preventing the substrate from becoming too wet. It should be noted that substrate manufacturers, in order to ensure that the substrate can be used normally, will not allow the substrate to be too wet from the beginning. Because the substrate can be moistened by adding water when it is dry, it is more difficult to dehumidify the substrate if it is too wet from the beginning. Long-term transportation will cause harmful bacteria to grow inside the substrate, which will lead to the overall waste of the substrate. Therefore, the substrate will only be too wet during subsequent preparation, and will not be too wet from the beginning.

[0068] 3. The preset lower limit value of substrate moisture content; this means that the control unit determines the substrate to be too dry. Below this value, it means that the substrate moisture is insufficient, and the atomization time needs to be extended to supplement water to meet the needs of seedling cultivation. When the soil moisture sensor 22 detects that the substrate moisture content is lower than the preset lower limit value, the control unit extends the atomization time of the atomizing element 23, and increases the substrate moisture content to the threshold range by increasing the amount of water replenished; this threshold is the trigger condition for starting or extending the atomization action.

[0069] 4. Higher substrate moisture content threshold: This refers to a critical value that distinguishes when the substrate moisture content is at a high level, triggering a high-humidity adjustment scheme. This involves differentiating the covering steps to address issues of soil loss and adhesion in high-humidity environments. When the substrate moisture content reaches the higher threshold, the control unit performs the following actions: increasing the soil coverage of the first quantitative covering hopper to 120% of the normal amount to absorb excess moisture from the lower layers; shutting off the atomizing element 23 to prevent further humidification; and reducing the soil coverage of the second quantitative covering hopper to 80% of the normal amount to reduce the risk of compaction and adhesion.

[0070] 5. Lower substrate moisture content threshold: This refers to the critical value that distinguishes when the substrate moisture content is at a low level, triggering a low-moisture adjustment scheme. This solves the problem of the cover layer being difficult to wet in low-moisture environments by reducing the amount of topsoil and adding targeted water. When the substrate moisture content reaches the lower threshold, the control unit performs the following actions: reduces the amount of topsoil in the first quantitative topsoil hopper to 80% of the normal amount, and extends the atomization time of the secondary atomizer to 1.5 times the normal time to specifically wet the topsoil layer.

[0071] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plant growing and raising device characterized by comprising: Include: The body (1), the inside of the body (1) is horizontally slidingly connected with the seedling tray; The substrate filling box (2) is arranged on one side of the body (1); The soil moisture sensor (22) is fixedly installed in the inside of the substrate filling box (2); The atomizing piece (23) is arranged on one side of the substrate filling box (2), and the atomizing piece (23) is multiple groups; The quantitative covering piece (24) is arranged on the body (1), and the quantitative covering piece (24) is multiple groups; The control unit is electrically connected with the soil moisture sensor (22), the atomizing piece (23) and the quantitative covering piece (24) respectively, the control unit is used for dynamically adjusting the atomizing time of the atomizing piece (23) through the substrate water content detected by the soil moisture sensor (22), and the control unit is also used for adjusting the covering amount of different quantitative covering pieces (24) respectively through the substrate water content detected by the soil moisture sensor (22).

2. The plant growing and seedling raising apparatus according to claim 1, wherein One side of the body (1) is fixedly installed with a bearing frame, the seedling tray is vertically arranged in the inside of the bearing frame, and the inside of the body (1) is provided with a conveying piece, and the conveying piece is used for horizontally conveying the seedling tray from left to right.

3. The plant growing and seedling raising apparatus according to claim 1, wherein The atomizing piece (23) includes a main atomizer and a secondary atomizer, the main atomizer is arranged on one side of the substrate filling box (2), and the main atomizer is provided with a secondary covering box on one side.

4. The plant growing and seedling raising apparatus according to claim 3, wherein One side of the secondary covering box is fixedly installed with a pit pressing piece, the end of the pit pressing piece is provided with an insertion type moisture detector, one side of the pit pressing piece is fixedly installed with a vacuum seed throwing piece, the quantitative covering piece (24) includes a first quantitative covering hopper and a second quantitative covering hopper, the first quantitative covering hopper is arranged on one side of the vacuum seed throwing piece, and the secondary atomizer is arranged on one side of the first quantitative covering hopper.

5. The plant growing and seedling raising apparatus according to claim 4, wherein One side of the first quantitative covering hopper is provided with a second quantitative covering hopper, and one side of the second quantitative covering hopper is fixedly installed with a flattening piece.

6. A method of using a plant growing and seedling raising device according to any one of claims 1 to 9, wherein The steps include: S1, the substrate is placed in the inside of the substrate filling box (2), the moisture content in the substrate is detected by the soil moisture sensor 22, and the data is transmitted to the control unit; S2, the control unit dynamically adjusts the atomizing time of the atomizing piece (23) through the substrate moisture content; S3, the control unit controls the covering amount of the first quantitative covering hopper and the second quantitative covering hopper according to the substrate moisture content respectively; S4, the seedling tray enters the substrate filling, pit pressing, seed throwing, covering and flattening pieces in sequence through the conveying piece to complete the seedling preparation.

7. The method of using a plant growing and seeding device of claim 6, wherein, In step S2, when the substrate water content is higher than the preset upper limit value, the control unit closes the atomizer to avoid the substrate being too wet; when the substrate water content is lower than the preset lower limit value, the control unit prolongs the atomizing time of the atomizing piece (23) to increase the substrate water content to the threshold range.

8. The method of using a plant growing and seeding device of claim 6, wherein, In step S3, when the substrate water content is higher, the control unit increases the covering amount of the first quantitative covering hopper, closes the atomizing piece (23), and reduces the covering amount of the second quantitative covering hopper; when the substrate water content is lower, the control unit reduces the covering amount of the covering piece, and increases the atomizing time of the secondary atomizer, so that the covering layer can be fully soaked by the lower layer water.

9. The method of using a plant growing and seeding device of claim 4, wherein, The detection signal of the plug-in water content detector is directly fed back to the control unit, which is used for real-time correction of the working parameters of the atomizing part (23) and the quantitative covering part (24).

10. The method of using a plant growing and seeding device of claim 5, wherein, The flattening degree of the flattening part is adjustable, and the flattening part automatically switches the pressure mode according to the water content of the substrate and the amount of covering soil during the flattening operation.

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