Adjustable oat breeding seedbed

Abstract

This invention discloses an adjustable seedbed for oat breeding, relating to the field of agricultural seedling equipment technology. The invention uses two air guides to direct the airflow upwards and two air guides to direct the airflow downwards, thus achieving cross-direction airflow. Air guides direct air pressure to the bottom of the seedling tray, promoting oxygen diffusion to the roots, enhancing rhizosphere aerobic respiration, and stimulating root division and downward growth during the tillering stage. Air guides the airflow upwards, creating convection with the downward airflow, preventing moisture retention on the soil surface, reducing the risk of root rot. The cross-direction airflow reduces localized high-humidity areas between stems, inhibiting fungal diseases, while simultaneously enhancing the resistance of the stem base and preventing lodging later. The multi-directional wind disturbance simulates a natural wind environment, causing micro-mechanical stress in the oat stems, accelerating cellulose deposition, increasing stem thickness, supporting the plant load after increased tillering, and maintaining homeostasis in the rhizome zone.

Description

Technical Field

[0001] This invention relates to the field of agricultural seedling equipment technology, specifically an adjustable seedbed for oat breeding. Background Technology

[0002] Oats are an ancient crop used for both food and feed, with written records dating back over 2000 years. Oats belong to the cereal family, one of the eight major grain crops. Many factors influence oat growth and development, among which soil, water, nutrients, temperature, light, and air are essential environmental conditions. To achieve high oat yields, it is crucial to select superior varieties suitable for local conditions and to create suitable environmental conditions for oat growth and development through field management. A seedbed is a tool used to cultivate plants, especially crop seedlings.

[0003] Existing seedbeds cannot promote oat root development during the tillering stage, a crucial period for oat stem thickening. However, the fixed ventilation system of traditional seedbeds fails to provide effective airflow stimulation, resulting in insufficient cellulose deposition in the stems, poor mechanical tissue development, and a lack of adequate wind friction at the stem base. This leads to insufficient cell wall thickening, making the plants prone to lodging in wind and rain later on, severely impacting yield and quality. Fixed wind direction and speed also cause poor ventilation in some areas of the seedbed, resulting in excessively high humidity in some areas and dehydration in others due to strong winds, causing uneven plant growth. The stem base is constantly in a high-humidity environment, which easily breeds fungal diseases, which can spread rapidly with airflow once they develop. The lack of dynamic wind stimulation results in weak tiller bud development, with some tillers degenerating due to competition for light and nutrients, reducing the effective ear formation rate. Poor stem uprightness and excessively large tillering angles lead to loose plant clusters and reduced light energy utilization. Summary of the Invention

[0004] Technical problems to be solved To address the problem that existing oat breeding seedbeds have fixed wind direction and cannot promote the vigorous growth of oat roots during the tillering stage, this invention provides an adjustable oat breeding seedbed.

[0005] Technical solution The present invention is achieved through the following technical solution: an adjustable seedbed for oat breeding, comprising an oat seedbed, wherein a seedling cavity is provided on the top surface of the oat seedbed, and a spacing adjustment component is installed inside the oat seedbed, wherein a plurality of planting racks are evenly distributed on the outer surface of the spacing adjustment component, and the spacing adjustment component is used to adjust the spacing between the plurality of planting racks to facilitate adaptation to different growth stages of oats; The interior of each of the planting racks is evenly equipped with a number of seedling trays, and the interior of the oat seedling bed is equipped with two ventilation volume adjustment components, one of which has a wind direction changing component installed on its outer surface. The wind direction changing component includes rotating column two and rotating column three. Rotating column two and rotating column three are movably installed inside the oat seedling bed. A belt two is movably installed on the outer surface of rotating column two and rotating column three together. Air guide plates one are installed inside both rotating column two and rotating column three. Several electrically operated telescopic rods are evenly distributed on the bottom surface of the oat seedling bed. Rotating column four is movably installed inside the oat seedling bed. Air guide plates two are installed on the outer surface of rotating column four. The bottom surface of air guide plates two is in contact with the outer surfaces of the several electrically operated telescopic rods, used to change the angle of air guide plates one and two, thereby changing the wind direction blowing on the oat roots and stems at different stages and adapting to the different growth stages of oats.

[0006] Furthermore, a worm gear is installed on the outer surface of the ventilation volume regulating component, and a worm wheel is installed on the outer surface of the rotating column II, with the outer surface of the worm gear and the outer surface of the worm wheel meshing with each other.

[0007] Furthermore, the spacing adjustment assembly includes a rotary motor and a ball screw. The rotary motor is installed inside the oat seedling bed, and a ball screw is installed on the outer surface of the output end of the rotary motor. Several screw sliders are evenly distributed and movably installed on the outer surface of the ball screw. Two limiting posts are installed inside the oat seedling bed.

[0008] Furthermore, the outer surfaces of the two limiting posts are in active contact with the interior of several lead screw sliders. The interior of the oat seedling bed is equipped with multiple sets of cross connecting rods. The interior of the multiple sets of cross connecting rods is evenly distributed with several pins. The outer surfaces of the pins are fixedly connected to the interior of several lead screw sliders.

[0009] Furthermore, each of the outer surfaces of the screw sliders is equipped with a connecting frame, and the connecting frames are fixedly connected to the planting frame.

[0010] Furthermore, the seedling cavity is equipped with several limiting slide rails, and several limiting sliders are evenly distributed on the bottom surface of several planting racks. The outer surfaces of several limiting sliders are in contact with the outer surfaces of the limiting slide rails.

[0011] Furthermore, the ventilation volume adjustment component includes a belt and a rotating column. The rotating column is movably installed inside the oat seedling bed. The belt is movably installed on the outer surface of the rotating column and the outer surface of the ball screw. One end surface of the rotating column is fixedly connected to one end surface of the worm gear. A gear ring is installed on the outer surface of the rotating column.

[0012] Furthermore, the oat seedling bed has a lifting cavity inside, and a wind baffle is movably installed inside the lifting cavity. A gear rack is installed on one end surface of the wind baffle, and the outer surface of the gear ring meshes with the outer surface of the gear rack.

[0013] Furthermore, the oat seedling bed has several ventilation holes inside.

[0014] Beneficial effects The present invention has the following beneficial effects: (1) The adjustable oat breeding seedbed guides the wind upward through the second wind guide plate and guides the wind downward through the two first wind guide plates, thereby achieving cross wind direction. The first wind guide plate guides the wind pressure to the bottom of the seedling tray, promotes the diffusion of oxygen to the roots, enhances the aerobic respiration of the rhizosphere, and stimulates the root division and downward growth during the tillering period. The second wind guide plate guides the wind upward, forming convection with the downward airflow, avoiding the retention of moisture on the soil surface, reducing the risk of root rot. The cross airflow can reduce the local high humidity area between the stems, inhibit fungal diseases, and at the same time enhance the stress resistance of the stem base, prevent lodging in the later stage. The multi-directional wind disturbance simulates the natural wind environment, promotes the generation of micro-mechanical stress in the oat stems, accelerates cellulose deposition, increases stem thickness, supports the plant load after the increase of tillers, and maintains the homeostasis of the root zone.

[0015] (2) The adjustable oat breeding seedbed moves the wind baffle upward in the lifting chamber through the gear rack, thereby increasing the ventilation area of ​​the oat seedbed and simultaneously increasing the output power of the fan. During the tillering period of oats, increased ventilation can accelerate the replenishment of carbon dioxide and the emission of oxygen, improve the photosynthetic efficiency, provide more energy for the rapid growth of stems and leaves during the tillering period, and avoid plant growth or disease caused by high temperature and humidity. It maintains a suitable microclimate, ensures the healthy development of tillers, and the airflow disturbance can stimulate the differentiation of stem mechanical tissue, reduce the risk of lodging in the later stage, which is especially important for oat populations with increased tillers. It reduces the phenomenon of temperature and humidity stratification in the seedbed, so that the tillering sites can obtain uniform growth conditions and improve the uniformity of tillers.

[0016] (3) The adjustable oat breeding seedbed moves stably on the limit slide rail by driving the planting frame to increase the distance between several planting frames, thereby adapting to the continuous growth of oat plants. As the height and crown width of oat plants increase, the distance between planting frames is automatically expanded to ensure that the leaves are fully spread out, avoid mutual shading, provide sufficient space for tillering development, maintain the best light angle, maintain uniform ventilation effect, and promote the rational development of the population structure.

[0017] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the oat seedling bed of the present invention; Figure 3 This is a schematic diagram of the internal structure of the oat seedling bed of the present invention from another perspective; Figure 4 This is a schematic diagram of the overall structure of the spacing adjustment component of the present invention; Figure 5 This is a schematic diagram of the internal structure of the spacing adjustment component of the present invention; Figure 6 This is a schematic diagram of the internal structure of the spacing adjustment component of the present invention from another perspective; Figure 7 This is a schematic diagram of the internal structure of the ventilation volume regulating component of the present invention; Figure 8 This is a schematic diagram of the overall structure of the wind direction changing component of the present invention.

[0019] In the diagram: 1. Oat seedling bed; 2. Seedling chamber; 3. Spacing adjustment component; 301. Rotary motor; 302. Limiting slider; 303. Ball screw; 304. Screw slider; 305. Limiting post; 306. Multiple sets of cross linkages; 307. Pin; 308. Connecting frame; 309. Limiting slide rail; 4. Planting rack; 5. Seedling tray; 6. Ventilation adjustment component; 601. Belt 1; 60 2. Rotating column one; 603. Gear ring; 604. Gear rack; 605. Lifting chamber; 606. Ventilation hole; 607. Wind baffle; 7. Air direction changing component; 701. Worm gear; 702. Worm wheel; 703. Rotating column two; 704. Rotating column three; 705. Belt two; 706. Air guide plate one; 707. Electric telescopic rod; 708. Rotating column four; 709. Air guide plate two; 8. Fan. Detailed Implementation

[0020] 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.

[0021] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0022] Please see Figures 1-8 The present invention provides a technical solution: an adjustable oat breeding seedbed, including an oat seedbed 1, a seedling cavity 2 opened on the top surface of the oat seedbed 1, a spacing adjustment component 3 installed inside the oat seedbed 1, and a plurality of planting racks 4 evenly distributed on the outer surface of the spacing adjustment component 3. The spacing adjustment component 3 is used to adjust the spacing between the plurality of planting racks 4 to facilitate adaptation to different growth stages of oats. Several seedling trays 5 are evenly distributed inside each of the planting racks 4. Two ventilation adjustment components 6 are installed inside the oat seedling bed 1. One of the ventilation adjustment components 6 has a wind direction changing component 7 installed on its outer surface. The wind direction changing component 7 includes rotating column two 703 and rotating column three 704. Rotating column two 703 and rotating column three 704 are movably installed inside the oat seedling bed 1. A belt two 705 is movably installed on the outer surface of rotating column two 703 and the outer surface of rotating column three 704. Air guide plates one 706 are installed inside both rotating column two 703 and rotating column three 704. Several electrically operated telescopic rods 707 are evenly distributed on the bottom surface of the oat seedling bed 1. Rotating column four 708 is movably installed inside the oat seedling bed 1. Air guide plates two 709 are installed on the outer surface of rotating column four 708. The bottom surface of air guide plates two 709 is in contact with the outer surfaces of the several electrically operated telescopic rods 707, used to change the angle of air guide plates one 706 and air guide plates two 709, changing the wind direction blowing on the oat roots and stems at different stages, adapting to the different growth stages of oats. The ventilation volume regulating component 6 is located on the outer side... A worm gear 701 is mounted on the surface of the rotating column 703, and a worm wheel 702 is mounted on the outer surface of the rotating column 703. The outer surfaces of the worm gear 701 and the outer surfaces of the worm wheel 702 mesh with each other, causing the air guide plate 709 to guide the airflow upwards, and the two air guide plates 706 to guide the airflow downwards, thus achieving cross-wind direction. The air guide plates 706 guide the air pressure to the bottom of the seedling tray 5, promoting oxygen diffusion to the roots, enhancing rhizosphere aerobic respiration, and stimulating root differentiation and downward growth during the tillering stage. The 709 wind deflector guides the wind upwards, creating convection with the downward airflow. This prevents moisture from accumulating on the soil surface, reducing the risk of root rot. The cross-flow can reduce localized high-humidity areas between stems, inhibiting fungal diseases. At the same time, it enhances the resistance of the stem base, preventing lodging later. The multi-directional wind disturbance simulates a natural wind environment, causing micro-mechanical stress in the oat stems, accelerating cellulose deposition, increasing stem thickness, supporting the plant load after tillering, and maintaining homeostasis in the root zone.

[0023] The spacing adjustment assembly 3 includes a rotary motor 301 and a ball screw 303. The rotary motor 301 is installed inside the oat seedling bed 1. The ball screw 303 is installed on the outer surface of the output end of the rotary motor 301. Several screw sliders 304 are evenly distributed and movably installed on the outer surface of the ball screw 303. Two limiting posts 305 are installed inside the oat seedling bed 1. The outer surfaces of the two limiting posts 305 are in movable contact with the interior of the screw sliders 304. Multiple sets of cross links 306 are installed inside the oat seedling bed 1. Several pins 307 are evenly distributed and installed inside the multiple sets of cross links 306. The outer surfaces of the pins 307 are fixedly connected to the interior of the screw sliders 304. Connecting brackets 308 are installed on the outer surfaces of the screw sliders 304. The connecting brackets 308 are connected to the interior of the screw sliders 304. The planting rack 4 is fixedly connected. Several limiting slide rails 309 are installed inside the seedling cavity 2. Several limiting sliders 302 are evenly distributed on the bottom surface of the planting racks 4. The outer surface of the limiting sliders 302 is in contact with the outer surface of the limiting slide rails 309, so that the connecting racks 308 move at equal distances. The connecting racks 308 correspondingly drive the planting racks 4 to move. The planting racks 4 drive the limiting sliders 302 on the bottom surface to move stably on the limiting slide rails 309, thereby increasing the spacing between the planting racks 4. This adapts to the continuous growth of oat plants. As the height and crown width of the oat plants increase, the spacing of the planting racks 4 automatically expands, ensuring that the leaves can fully spread out, avoiding mutual shading, providing sufficient space for tillering development, maintaining the best light angle, maintaining uniform ventilation, and promoting the rational development of the plant population structure.

[0024] The ventilation volume adjustment component 6 includes a belt 601 and a rotating column 602. The rotating column 602 is movably installed inside the oat seedling bed 1. The outer surface of the rotating column 602 and the outer surface of the ball screw 303 are movably connected together with the belt 601. One end surface of the rotating column 602 is fixedly connected to one end surface of the worm gear 701. A gear ring 603 is installed on the outer surface of the rotating column 602. A lifting chamber 605 is opened inside the oat seedling bed 1. A baffle 607 is movably installed inside the lifting chamber 605. A gear rack 604 is installed on one end surface of the baffle 607. The outer surface of the gear ring 603 meshes with the outer surface of the gear rack 604. Several ventilation adjustment components are opened inside the oat seedling bed 1. A ventilation hole 606 causes the gear rack 604 to drive the baffle plate 607 to move upward within the lifting chamber 605, thereby increasing the ventilation area of ​​the oat seedling bed 1 and simultaneously increasing the output power of the fan 8. During the oat tillering period, increased ventilation can accelerate the replenishment of carbon dioxide and the emission of oxygen, improve photosynthetic efficiency, provide more energy for the rapid growth of stems and leaves during the tillering period, and avoid excessive vegetative growth or diseases caused by high temperature and humidity. It maintains a suitable microclimate, ensures healthy tillering development, and the airflow disturbance can stimulate the differentiation of stem mechanical tissue, reduce the risk of lodging in the later stage, which is especially important for oat populations with increased tillering. It also reduces the phenomenon of temperature and humidity stratification in the seedling bed, so that the tillering sites obtain uniform growth conditions and improve tillering uniformity.

[0025] The specific workflow of this invention is as follows: When oats need to be cultivated, seeds are placed in seedling trays 5, and several seedling trays 5 are placed on planting racks 4. The oats in the seedling trays 5 are cultivated from the germination stage to the seedling stage. Several fans 8 are controlled by a controller to operate and control the output power of the fans 8. At this time, the air guide plate 706 is tilted upward, blowing the air upward towards the seedling trays 5. During the seedling stage, the oat stems and leaves are slender and the root system is not fully developed. The upward tilt of the air guide plate 706 forms an oblique upward airflow, avoiding direct airflow to the base of the seedlings, which may cause lodging or root dehydration. At the same time, it reduces leaf surface friction damage and protects the new true leaves. The airflow blows upward over the surface of the seedlings, accelerates the air circulation around the leaves, and promptly removes the water vapor produced by transpiration, reducing the humidity of the leaf surface, reducing the risk of fungal diseases, and promoting CO2 exchange to improve photosynthetic efficiency.

[0026] As the oat plants grow from seedlings to tillers, the controller activates the rotary motor 301, which in turn increases the output power of the fan 8. The rotary motor 301 drives the ball screw 303 to deflect at an angle. The ball screw 303 directly interacts with several screw sliders 304. These screw sliders 304, via pins 307, drive multiple sets of cross linkages 306 to deflect at an angle, causing several connecting frames 308 to move equidistantly. These connecting frames 308 correspondingly move the planting frame 4. The planting frame 4 then drives the bottom surface limiting slider 302 to move stably on the limiting rail 309, increasing the spacing between the planting frames 4. This accommodates the continuous growth of the oat plants, automatically expanding the spacing of the planting frames 4 as the plant height and canopy width increase. This ensures the leaves are fully extended, avoids mutual shading, provides ample space for tillering development, maintains the optimal light angle, ensures uniform ventilation, and promotes a rational plant structure.

[0027] Furthermore, the ball screw 303 drives two rotating columns 602 to rotate via two belts 601, which in turn drive the gear ring 603 to rotate. The outer surfaces of the gear ring 603 and the gear rack 604 mesh with each other, causing the gear rack 604 to move the baffle 607 upward within the lifting chamber 605 (the lifting chamber 605 is equipped with a slide rail to facilitate the stable rise of the baffle 607). This increases the ventilation area of ​​the oat seedling bed 1 and simultaneously increases the output power of the fan 8. During the tillering stage of oats, increased ventilation can accelerate the replenishment of carbon dioxide and the emission of oxygen, improve photosynthetic efficiency, provide more energy for the rapid growth of stems and leaves during the tillering stage, and avoid excessive vegetative growth or diseases caused by high temperature and humidity. Maintaining a suitable microclimate ensures healthy tillering development. Airflow disturbance can stimulate the differentiation of stem mechanical tissues, reduce the risk of lodging in the later stage, which is especially important for oat populations with increased tillering. It also reduces the phenomenon of temperature and humidity stratification in the seedbed, so that the tillering sites obtain uniform growth conditions and improve tillering uniformity.

[0028] Furthermore, the rotating column 602 drives the worm gear 701 to rotate. The worm gear 701 meshes with the worm wheel 702, which in turn drives the rotating column 703 to rotate. The rotating column 703, via belt 705, drives the rotating column 703 to deflect at an angle. The controller also controls the electric telescopic rod 707 to operate. The output end of the electric telescopic rod 707 pushes the air guide plate 709 upwards. The air guide plate 709 drives the rotating column 708 to deflect at an angle, thus guiding the airflow upwards via the air guide plate 709. The two air guide plates 706 guide the airflow downwards. To achieve cross-wind direction, wind deflector 706 directs wind pressure to the bottom of seedling tray 5, promoting oxygen diffusion to the roots, enhancing rhizosphere aerobic respiration, and stimulating root differentiation and downward growth during the tillering stage. Wind deflector 709 directs the wind upward, forming convection with the downward airflow, preventing moisture retention on the soil surface, reducing the risk of root rot. Cross-airflow can reduce localized high-humidity areas between stems, inhibiting fungal diseases, while enhancing the resistance of the stem base and preventing lodging later. Multi-directional wind disturbance simulates a natural wind environment, causing micro-mechanical stress in the oat stems, accelerating cellulose deposition, increasing stem thickness, supporting the plant load after increased tillering, and maintaining homeostasis in the rhizome zone.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adjustable seedbed for oat breeding, comprising an oat seedbed (1), characterized in that: The top surface of the oat seedling bed (1) is provided with a seedling cavity (2). The oat seedling bed (1) is equipped with a spacing adjustment component (3). Several planting racks (4) are evenly distributed on the outer surface of the spacing adjustment component (3). The spacing adjustment component (3) is used to adjust the spacing between the several planting racks (4) to facilitate the adaptation to the different growth stages of oats. Several seedling trays (5) are evenly distributed inside each of the planting racks (4). Two ventilation volume adjustment components (6) are installed inside the oat seedling bed (1). One of the ventilation volume adjustment components (6) has a wind direction changing component (7) installed on its outer surface. The wind direction changing component (7) includes a second rotating column (703) and a third rotating column (704). The second rotating column (703) is movably installed inside the oat seedling bed (1), and the third rotating column (704) is movably installed inside the oat seedling bed (1). A belt (705) is movably installed on the outer surface of the second rotating column (703) and the outer surface of the third rotating column (704). A wind guide plate (706) is installed inside both the second rotating column (703) and the third rotating column. The bottom surface of the oat seedling bed (1) is evenly distributed with several electric telescopic rods (707). The inside of the oat seedling bed (1) is movably installed with a rotating column four (708). The outer surface of the rotating column four (708) is equipped with a wind guide plate two (709). The bottom surface of the wind guide plate two (709) is in contact with the outer surface of several electric telescopic rods (707) to change the angle of the wind guide plate one (706) and the wind guide plate two (709), thereby changing the wind direction blowing on the oat roots and stems at different stages and adapting to the growth of oats at different stages.

2. The adjustable oat breeding seedbed according to claim 1, characterized in that: The outer surface of the ventilation volume regulating component (6) is equipped with a worm gear (701), and the outer surface of the rotating column (703) is equipped with a worm wheel (702). The outer surface of the worm gear (701) and the outer surface of the worm wheel (702) mesh with each other.

3. The adjustable seedbed for oat breeding according to claim 1, characterized in that: The spacing adjustment component (3) includes a rotary motor (301) and a ball screw (303). The rotary motor (301) is installed inside the oat seedling bed (1). A ball screw (303) is installed on the outer surface of the output end of the rotary motor (301). Several screw sliders (304) are evenly distributed and movable on the outer surface of the ball screw (303). Two limiting posts (305) are installed inside the oat seedling bed (1).

4. The adjustable oat breeding seedbed according to claim 3, characterized in that: The outer surfaces of the two limiting posts (305) are in active contact with the interior of several lead screw sliders (304). The oat seedling bed (1) is equipped with multiple sets of cross links (306). Several pins (307) are evenly distributed inside the multiple sets of cross links (306). The outer surfaces of the pins (307) are fixedly connected to the interior of the several lead screw sliders (304).

5. An adjustable seedbed for oat breeding according to claim 4, characterized in that: A connecting frame (308) is installed on the outer surface of each of the screw sliders (304), and the connecting frames (308) are fixedly connected to the planting frame (4).

6. An adjustable seedbed for oat breeding according to claim 5, characterized in that: The seedling cavity (2) is equipped with several limiting slide rails (309), and several limiting sliders (302) are evenly distributed on the bottom surface of several planting racks (4). The outer surface of several limiting sliders (302) is in contact with the outer surface of the limiting slide rails (309).

7. An adjustable seedbed for oat breeding according to claim 1, characterized in that: The ventilation volume adjustment component (6) includes a belt (601) and a rotating column (602). The rotating column (602) is movably installed inside the oat seedling bed (1). The outer surface of the rotating column (602) and the outer surface of the ball screw (303) are movably installed together with the belt (601). One end surface of the rotating column (602) is fixedly connected to one end surface of the worm gear (701). A gear ring (603) is installed on the outer surface of the rotating column (602).

8. An adjustable seedbed for oat breeding according to claim 7, characterized in that: The oat seedling bed (1) has a lifting cavity (605) inside. A wind baffle (607) is movably installed inside the lifting cavity (605). A gear rack (604) is installed on one end surface of the wind baffle (607). The outer surface of the gear ring (603) meshes with the outer surface of the gear rack (604).

9. An adjustable seedbed for oat breeding according to claim 1, characterized in that: The oat seedling bed (1) has several ventilation holes (606) inside.

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