A breeding device for high-yield corn seed selection

Abstract

The application discloses a kind of for high-yield corn seed selection breeding cultivation device, it is related to seed cultivation technical field, including: incubator, for high-yield corn seed is cultivated;Box door, the box door rotation is installed in the front of incubator, for incubator is closed;Ventilation device, the ventilation device is arranged in the inside of incubator, for the ventilation of inside incubator;Incubation plate, the incubation plate sliding installation is in the inside of incubator, for placing corn seed, the inside of the incubator is provided with stabilizing device, by when seed is cultivated, limit rod movement can ensure that incubation plate is stable, prevent incubation plate appears displacement and causes corn seedling root system to be subjected to mechanical damage, or because of soil loose influence water, nutrient absorption, simultaneously by rigidly fixed incubation plate, can reduce mechanical load uneven phenomenon, prolong the service life of device, reduce the delay of selection period caused by breakdown downtime.

Description

Technical Field

[0001] This invention relates to the field of seed breeding technology, specifically to a breeding device for high-yield maize seed selection. Background Technology

[0002] The breeding equipment for high-yield maize seeds is usually an advanced system that integrates environmental control, automated management and data monitoring, designed to optimize maize growth conditions, accelerate the breeding process and improve seed quality.

[0003] Patent publication number CN215500628U relates to the field of seed cultivation technology, specifically to a cultivation device for high-yield maize seed selection. The device includes a cultivation box with an opening and closing door at the front, a cultivation pot placement device inside the box, and side walls of the box including a rear side wall, a left side wall, a right side wall, and a bottom wall. The left and right side walls include inner and outer walls, forming a cavity between them. An air vent is provided on the inner wall. A heating device is installed within the cavity, and a temperature sensor is also installed within the cavity. The temperature sensor, heating device, and controller are all connected to an external controller and powered by an external power source. This device maintains a constant temperature within the cultivation box, making it more suitable for maize cultivation and accelerating breeding efficiency.

[0004] In the aforementioned patent, the temperature sensor, heating device, and controller are all powered by an external power source; this allows the temperature inside the incubator to remain within a constant range, which is more suitable for corn cultivation and accelerates breeding efficiency. However, it is difficult to fix the cultivation pot when cultivating corn seeds, which can easily cause the cultivation pot to shake during cultivation, leading to unexpected problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a breeding device for high-yield maize seed selection, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a cultivation device for breeding high-yield maize seeds, comprising: a cultivation box for cultivating high-yield maize seeds; a box door, which is rotatably installed at the front of the cultivation box for sealing the cultivation box; a ventilation device, which is disposed inside the cultivation box for ventilating the interior of the cultivation box; and a cultivation plate, which is slidably installed inside the cultivation box for placing maize seeds, wherein a stabilizing device is provided inside the cultivation box.

[0007] The stabilizing device includes a first elastic telescopic rod, a limiting rod, a long rod, a first inclined block, a push rod, a second elastic telescopic rod, a baffle, a second inclined block, and a fixed rod. The first elastic telescopic rod is fixedly installed at the front of the ventilation device. The limiting rod is fixedly installed at the movable end of the first elastic telescopic rod. The long rod is fixedly installed on the left side of the limiting rod. The first inclined block is fixedly installed at the bottom of the long rod. The push rod is fixedly installed on the back of the door. The second elastic telescopic rod is fixedly installed at the front of the cultivation plate. The baffle is fixedly installed at the movable end of the second elastic telescopic rod. The second inclined block is fixedly installed at the bottom of the baffle. The fixed rod is fixedly installed at the top of the limiting rod. The rotation of the door causes the push rod to move. The push rod moves and contacts and pushes the first inclined block to move. The movement of the first inclined block causes the long rod to move. The movement of the long rod causes the limiting rod to move. The limiting rod moves and contacts the front of the cultivation plate.

[0008] According to the above technical solution, the stabilizing device also includes an air outlet box, which is fixedly installed on the top of the incubator. The side of the push rod that contacts the inclined block one is set as an inclined surface, and the side of the fixed rod that contacts the inclined block two is set as an inclined surface. By setting the inclined surfaces, it is ensured that the push rod can smoothly push the inclined block one when it moves, and the inclined surfaces are set to ensure that the fixed rod can smoothly push the inclined block two when it moves.

[0009] The incubation box is equipped with a sealing device for sealing the ventilation openings and a protective device for protecting the incubation equipment. The sealing device prevents dust from the outside air from contaminating the corn seeds, while the protective device ensures a stable incubation environment.

[0010] According to the above technical solution, the sealing device includes an inclined rod, a slide rail, a sealing plate, an inclined block three, and an elastic telescopic rod three. The inclined rod is fixedly installed on the right side of the long rod, the slide rail is fixedly installed on the side of the ventilation device near the inside of the incubator, the sealing plate is slidably installed inside the slide rail, the inclined block three is fixedly installed at the front of the sealing plate, and the elastic telescopic rod three is fixedly installed on the inner wall of the incubator. When the long rod moves, it drives the inclined rod to start moving. The moving inclined rod contacts and pushes the inclined block three to start moving. The moving inclined block three drives the sealing plate to start moving, and the moving sealing plate opens the ventilation opening on the ventilation device.

[0011] According to the above technical solution, the sealing device further includes a connecting rod, a fourth elastic telescopic rod, and a contact plate. The connecting rod is fixedly installed on the side of the sealing plate near the inside of the incubator. The fourth elastic telescopic rod is fixedly installed on the top of the connecting rod. The contact plate is fixedly installed on the top of the movable end of the fourth elastic telescopic rod. When the sealing plate moves, the connecting rod starts to move. The movement of the connecting rod causes the fourth elastic telescopic rod to move. The movement of the fourth elastic telescopic rod causes the contact plate to move. The contact plate moves to the bottom of the incubator and contacts the bottom of the incubator.

[0012] According to the above technical solution, the sides of the inclined rod and the inclined block three that are in contact with each other are both set as inclined surfaces. The movable end of the elastic telescopic rod three is fixedly connected to the sealing plate. By setting the inclined surfaces, it is ensured that the inclined rod can smoothly push the inclined block three when it moves. By fixing the connection, it is ensured that the sealing plate can move and reset under the drive of the movable end of the elastic telescopic rod three.

[0013] According to the above technical solution, the protective device includes a sliding column, a protective plate, and a pull rod. The sliding column slides through the incubation box, the protective plate is fixedly installed at the end of the sliding column away from the inside of the incubation box, and the pull rod is fixedly installed on the top of the protective plate. The pull rod moves and contacts and pushes the sliding column to start moving, and the movement of the sliding column causes the protective plate to start moving.

[0014] According to the above technical solution, the protective device further includes a shielding plate one, a shielding plate two, an inclined block four, and a connecting block. The shielding plate one is slidably installed on the surface of the air outlet box, the shielding plate two is slidably installed on the surface of the air outlet box, the inclined block four is fixedly installed on the surface of the shielding plate two, and the connecting block is fixedly installed between the shielding plate one and the shielding plate two. When the shielding plate starts to move, it drives the pull rod to start to move. The pull rod moves and contacts and pushes the inclined block four to start to move upward. The movement of the inclined block four drives the shielding plate two to start to move upward. The movement of the shielding plate two drives the connecting block to start to move upward. The movement of the connecting block drives the shielding plate one to start to move upward.

[0015] According to the above technical solution, the side of the pull rod that contacts the inclined block four is set as an inclined surface, and a spring is set between the guard plate and the incubation box. The inclined surface ensures that the pull rod can smoothly push the inclined block four when moving, and the spring ensures that the guard plate can achieve self-reset.

[0016] This invention provides a breeding device for high-yield maize seed selection. It has the following beneficial effects:

[0017] (1) The invention ensures the stability of the cultivation board by limiting the movement of the rod during seed cultivation, preventing displacement of the cultivation board from causing mechanical damage to the roots of corn seedlings or affecting water and nutrient absorption due to soil loosening. At the same time, by rigidly fixing the cultivation board, the uneven mechanical load can be reduced, the service life of the device can be extended, and the breeding cycle delay caused by machine failure can be reduced.

[0018] (2) The invention prevents water or potting soil from flowing out from the edge by moving the baffle, ensuring that the nutrients in the soil of the whole pot are evenly distributed and preventing nutrients from being lost with water and soil. At the same time, it prevents soil from overflowing and polluting the equipment, causing equipment failure or data misjudgment, and reducing equipment maintenance costs.

[0019] (3) The invention opens the ventilation opening on the ventilation device by moving the sealing plate, which prevents the cultivation environment from getting out of control due to ventilation disturbance when the box door is opened, avoids dust or bacteria in the outside air from spreading with the airflow and contaminating the corn seeds or seedlings, and at the same time prevents foreign objects from being sucked in and damaging the fan impeller, protects the ventilation device and extends its service life. The contact plate moves to the bottom of the cultivation plate and contacts the bottom of the cultivation plate, which prevents the cultivation plate from falling due to accident during the cultivation period, ensures the stability of the cultivation plate, and reduces the vibration of the cultivation plate during the cultivation period, ensuring the normal progress of the cultivation.

[0020] (4) The invention ensures that the entire cultivation device has sufficient working space and sufficient space for heat dissipation by moving the protective plate outward, thereby reducing the heat load of the equipment, ensuring a stable cultivation environment, and preventing sample damage caused by local heat accumulation. By moving the shielding plate one and shielding plate two upward, the air outlet of the air box is opened, ensuring that the air blown by the ventilation device inside the cultivation box can be exhausted, preventing a large difference in air pressure inside and outside the cultivation box during operation, while preventing the accumulation of harmful gases, promoting air circulation, balancing temperature and humidity, and avoiding seedling leaf burn or physiological disorders. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the ventilation device and cultivation board structure of the present invention;

[0023] Figure 3 This is a cross-sectional schematic diagram of the stabilization device structure of the present invention;

[0024] Figure 4 This is a cross-sectional schematic diagram of the elastic telescopic rod and the limiting rod structure of the present invention;

[0025] Figure 5 For the present invention Figure 3 Enlarged schematic diagram of section A in the middle;

[0026] Figure 6 This is a cross-sectional schematic diagram of the sealing device structure of the present invention;

[0027] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of section B;

[0028] Figure 8 This is a cross-sectional view of the protective device structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the protective plate and tie rod structure of the present invention.

[0030] In the diagram: 1. Incubator; 2. Door; 3. Ventilation device; 4. Incubation board; 5. Air outlet box; 6. Elastic telescopic rod one; 7. Limiting rod; 8. Long rod; 9. Inclined block one; 10. Push rod; 11. Elastic telescopic rod two; 12. Baffle; 13. Inclined block two; 14. Fixing rod; 151. Inclined rod; 152. Slide rail; 153. Sealing plate; 154. Inclined block three; 155. Elastic telescopic rod three; 156. Connecting rod; 157. Elastic telescopic rod four; 158. Contact plate; 161. Sliding column; 162. Protective plate; 163. Pull rod; 164. Shelter plate one; 165. Shelter plate two; 166. Inclined block four; 167. Connecting block. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1-9 One embodiment of the present invention is: a cultivation device for breeding high-yield maize seeds, comprising: a cultivation box 1 for cultivating high-yield maize seeds; a box door 2, which is rotatably installed at the front of the cultivation box 1 for closing the cultivation box 1; a ventilation device 3, which is disposed inside the cultivation box 1 for ventilating the inside of the cultivation box 1; a cultivation plate 4, which is slidably installed inside the cultivation box 1 for placing maize seeds; and a stabilizing device is provided inside the cultivation box 1.

[0033] The stabilizing device includes a first elastic telescopic rod 6, a limiting rod 7, a long rod 8, a first inclined block 9, a push rod 10, a second elastic telescopic rod 11, a baffle 12, a second inclined block 13, and a fixing rod 14. The first elastic telescopic rod 6 is fixedly installed at the front of the ventilation device 3. The limiting rod 7 is fixedly installed at the movable end of the first elastic telescopic rod 6. The long rod 8 is fixedly installed on the left side of the limiting rod 7. The first inclined block 9 is fixedly installed at the bottom of the long rod 8. The push rod 10 is fixedly installed on the back of the box door 2. The second elastic telescopic rod 11 is fixedly installed at the front of the cultivation plate 4. The baffle 12 is fixedly installed at the movable end of the second elastic telescopic rod 11. The second inclined block 13 is fixedly installed at the bottom of the baffle 12. The fixing rod 14 is fixedly installed at the top of the limiting rod 7. By moving the limiting rod 7 during seed cultivation, the cultivation plate 4 can be kept stable, preventing displacement of the cultivation plate 4 that could cause mechanical damage to the roots of corn seedlings or affect water and nutrient absorption due to soil loosening. At the same time, by rigidly fixing the cultivation plate 4, uneven mechanical load can be reduced, the service life of the device can be extended, and the breeding cycle delay caused by downtime due to malfunctions can be reduced.

[0034] The stabilizing device also includes an air outlet box 5, which is fixedly installed on the top of the incubator 1. The sides of the push rod 10 that contact the inclined block 9 are both set as inclined surfaces, and the sides of the fixed rod 14 that contact the inclined block 13 are both set as inclined surfaces. By setting the inclined surfaces, it is ensured that the push rod 10 can smoothly push the inclined block 9 when moving, and the fixed rod 14 can smoothly push the inclined block 13 when moving.

[0035] In this embodiment, during operation: When the staff prepares to begin cultivating corn seeds, they first inspect the entire cultivation device. After confirming everything is in order, the staff opens the door 2 of the cultivation box 1, then removes the cultivation plate 4 from inside the cultivation box 1. The high-yield corn seeds to be cultivated are then placed on the cultivation plate 4 and buried in the potting soil. After all preparations are complete, the staff places the seed-filled cultivation plate 4 back into the cultivation box 1, and then closes the door 2 to ensure that the inside of the cultivation box 1 does not directly contact the outside, preventing cultivation failure due to changes in the external environment. When the staff closes the door 2, the door 2 rotates, causing the push rod 10 to move. The push rod 10 moves and contacts and pushes the inclined block 9 to move. The movement of the inclined block 9 causes the long rod 8 to move, which in turn causes the limiting rod 7 to move. The limiting rod 7 moves in conjunction with... The front part of the cultivation plate 4 is in contact with the limiting rod 7, which ensures the stability of the cultivation plate 4 during seed cultivation. This prevents displacement of the cultivation plate 4, which could cause mechanical damage to the roots of the corn seedlings or affect water and nutrient absorption due to soil loosening. At the same time, the rigid fixation of the cultivation plate 4 reduces uneven mechanical load, extends the service life of the device, and reduces the delay in the breeding cycle caused by downtime due to malfunctions. While the limiting rod 7 is moving, it also drives the fixing rod 14 to move. The moving fixing rod 14 contacts and pushes the inclined block 13 to move upward. The movement of the inclined block 13 drives the baffle 12 to move upward. The movement of the baffle 12 prevents water or potting soil from flowing out from the edge, ensuring that the nutrients in the soil of the whole pot are evenly distributed and preventing nutrients from being lost with water and soil. At the same time, it prevents soil from overflowing and contaminating the equipment, which could lead to equipment failure or data misjudgment, and reduces equipment maintenance costs.

[0036] Please see Figures 1-9 Based on the above embodiments, in another embodiment of the present invention, the incubation box 1 is provided with a sealing device for sealing the ventilation opening and a protective device for protecting the incubation device. The sealing device is provided to prevent dust in the outside air from contaminating the corn seeds, and the protective device is provided to ensure a stable incubation environment.

[0037] The sealing device includes a sloping rod 151, a slide rail 152, a sealing plate 153, a sloping block 154, and a flexible telescopic rod 155. The sloping rod 151 is fixedly installed on the right side of the long rod 8. The slide rail 152 is fixedly installed on the side of the ventilation device 3 near the inside of the incubator 1. The sealing plate 153 is slidably installed inside the slide rail 152. The sloping block 154 is fixedly installed at the front of the sealing plate 153. The flexible telescopic rod 155 is fixedly installed on the inner wall of the incubator 1. The ventilation opening on the ventilation device 3 is opened by moving the sealing plate 153, preventing the ventilation disturbance caused by the opening of the door 2 from causing the incubation environment to become out of control. This also prevents dust or bacteria in the outside air from spreading with the airflow and contaminating the corn seeds or seedlings, while preventing foreign objects from being sucked in and damaging the fan impeller, thus protecting the ventilation device 3 and extending its service life.

[0038] The sealing device also includes a connecting rod 156, an elastic telescopic rod 157, and a contact plate 158. The connecting rod 156 is fixedly installed on the side of the sealing plate 153 near the inside of the incubator 1. The elastic telescopic rod 157 is fixedly installed on the top of the connecting rod 156. The contact plate 158 is fixedly installed on the top of the movable end of the elastic telescopic rod 157. The contact plate 158 moves to the bottom of the incubation plate 4 and contacts the bottom of the incubation plate 4 to prevent the incubation plate 4 from falling due to accidents during the incubation period, ensuring the stability of the incubation plate 4, and reducing the vibration of the incubation plate 4 during the incubation period to ensure the normal progress of the incubation.

[0039] The sides of the inclined rod 151 and the inclined block 154 that come into contact with each other are both set as inclined surfaces. The movable end of the elastic telescopic rod 155 is fixedly connected to the sealing plate 153. By setting the inclined surfaces, it is ensured that the inclined rod 151 can smoothly push the inclined block 154 when it moves. By fixing the connection, it is ensured that the sealing plate 153 can move and reset under the drive of the movable end of the elastic telescopic rod 155.

[0040] The protective device includes a sliding column 161, a protective plate 162, and a pull rod 163. The sliding column 161 slides through the incubator 1. The protective plate 162 is fixedly installed at the end of the sliding column 161 away from the inside of the incubator 1. The pull rod 163 is fixedly installed on the top of the protective plate 162. The protective plate 162 moves and extends outward to ensure that the entire incubator has sufficient working space and sufficient space for heat dissipation, reduce the heat load of the equipment, ensure a stable incubation environment, and prevent sample damage caused by local heat accumulation.

[0041] The protective device also includes a shielding plate 164, a shielding plate 2 165, a ramp block 4 166, and a connecting block 167. The shielding plate 164 is slidably installed on the surface of the air outlet box 5, the shielding plate 2 165 is slidably installed on the surface of the air outlet box 5, the ramp block 4 166 is fixedly installed on the surface of the shielding plate 2 165, and the connecting block 167 is fixedly installed between the shielding plate 164 and the shielding plate 2 165. The air outlet of the air outlet box 5 is opened by moving the shielding plate 164 and the shielding plate 2 165 upwards, ensuring that the ventilation device 3 inside the incubator 1 can be exhausted when blowing air, preventing a large difference in air pressure inside and outside the incubator 1 during operation, preventing the accumulation of harmful gases, promoting air circulation, balancing temperature and humidity, and avoiding leaf burn or physiological disorders in seedlings.

[0042] The sides of the pull rod 163 that are in contact with the inclined block 166 are both set as inclined surfaces. A spring is provided between the guard plate 162 and the incubator 1. The inclined surfaces ensure that the pull rod 163 can smoothly push the inclined block 166 when it moves, and the spring ensures that the guard plate 162 can achieve self-reset.

[0043] In this embodiment, during operation: The long rod 8 moves simultaneously with the inclined rod 151, which in turn moves and contacts and pushes the inclined block 154 to move. The inclined block 154 then moves the sealing plate 153, opening the ventilation openings on the ventilation device 3. This prevents the cultivation environment from becoming uncontrollable due to ventilation disturbances when the box door 2 is opened, avoiding the spread of dust or bacteria from the outside air that could contaminate corn seeds or seedlings. It also prevents foreign objects from being sucked in and damaging the fan impeller, protecting the ventilation device 3 and extending its service life. Simultaneously, the sealing plate 153 moves, causing the connecting rod 156 to move. The connecting rod 156 then moves the elastic telescopic rod 157, which in turn moves the contact plate 158. The contact plate 158 moves to the bottom of the cultivation plate 4 and contacts the bottom of the cultivation plate 4, preventing the cultivation plate 4 from accidentally falling during cultivation, ensuring the stability of the cultivation plate 4, and reducing vibration during cultivation to ensure normal cultivation.

[0044] As the connecting rod 156 moves, it contacts and pushes the sliding column 161 to begin moving. The movement of the sliding column 161 causes the protective plate 162 to begin moving. The protective plate 162 extends outward to ensure that the entire culture device has sufficient working space and enough space for heat dissipation, reducing the heat load of the equipment, ensuring a stable culture environment, and preventing sample damage caused by local heat accumulation. At the same time as the protective plate 162 begins to move, it also drives the pull rod 163 to begin moving. The pull rod 163 moves and contacts and pushes the inclined block 166 to begin moving upward. The movement of the shielding plate 165 causes the second shielding plate to move upward, which in turn causes the connecting block 167 to move upward, and the connecting block 167 to move the first shielding plate 164 upward. The upward movement of the first shielding plate 164 and the second shielding plate 165 opens the air outlet of the air box 5, ensuring that the air blown by the ventilation device 3 inside the cultivation box 1 can be exhausted, preventing a large difference in air pressure inside and outside the cultivation box 1 during operation, preventing the accumulation of harmful gases, promoting air circulation, balancing temperature and humidity, and avoiding leaf burn or physiological disorders in seedlings.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A breeding device for high-yield maize seed selection, characterized in that, include: Incubation boxes are used to cultivate high-yield corn seeds; A door, which is rotatably mounted at the front of the incubator, is used to close the incubator. A ventilation device is installed inside the incubator to ventilate the interior of the incubator. A cultivation plate is slidably installed inside a cultivation box for placing corn seeds; the cultivation box is equipped with a stabilizing device. The stabilizing device includes an elastic telescopic rod 1, a limiting rod, a long rod, an inclined block 1, a push rod, an elastic telescopic rod 2, a baffle, an inclined block 2, and a fixed rod. The elastic telescopic rod 1 is fixedly installed at the front of the ventilation device. The limiting rod is fixedly installed at the movable end of the elastic telescopic rod 1. The long rod is fixedly installed on the left side of the limiting rod. The inclined block 1 is fixedly installed at the bottom of the long rod. The push rod is fixedly installed on the back of the box door. The elastic telescopic rod 2 is fixedly installed at the front of the cultivation plate. The baffle is fixedly installed at the movable end of the elastic telescopic rod 2. The inclined block 2 is fixedly installed at the bottom of the baffle. The fixed rod is fixedly installed at the top of the limiting rod. The stabilizing device also includes an air outlet box, which is fixedly installed on the top of the incubator. The sides of the push rod that contact the inclined block one are both set as inclined surfaces, and the sides of the fixed rod that contact the inclined block two are both set as inclined surfaces. The incubator is equipped with a sealing device for sealing the ventilation openings and a protective device for protecting the incubator. The sealing device includes a sloping rod, a slide rail, a sealing plate, a sloping block, and a flexible telescopic rod. The sloping rod is fixedly installed on the right side of the long rod. The slide rail is fixedly installed on the side of the ventilation device near the inside of the incubator. The sealing plate is slidably installed inside the slide rail. The sloping block is fixedly installed at the front of the sealing plate. The flexible telescopic rod is fixedly installed on the inner wall of the incubator. The sealing device also includes a connecting rod, a four-bar elastic telescopic rod, and a contact plate. The connecting rod is fixedly installed on the side of the sealing plate near the inside of the incubator. The four-bar elastic telescopic rod is fixedly installed on the top of the connecting rod. The contact plate is fixedly installed on the top of the movable end of the four-bar elastic telescopic rod.

2. The breeding device for high-yield maize seed selection according to claim 1, characterized in that: The sides of the inclined rod and the inclined block three that are in contact with each other are both set as inclined surfaces, and the movable end of the elastic telescopic rod three is fixedly connected to the sealing plate.

3. The breeding device for high-yield maize seed selection according to claim 2, characterized in that: The protective device includes a sliding column, a protective plate, and a pull rod. The sliding column slides through the incubation box, the protective plate is fixedly installed at the end of the sliding column away from the inside of the incubation box, and the pull rod is fixedly installed on the top of the protective plate.

4. A breeding device for high-yield maize seed selection according to claim 3, characterized in that: The protective device also includes a shielding plate one, a shielding plate two, an inclined block four, and a connecting block. The shielding plate one is slidably installed on the surface of the air outlet box, the shielding plate two is slidably installed on the surface of the air outlet box, the inclined block four is fixedly installed on the surface of the shielding plate two, and the connecting block is fixedly installed between the shielding plate one and the shielding plate two.

5. A breeding device for high-yield maize seed selection according to claim 4, characterized in that: The sides of the pull rod that come into contact with the inclined block are all set as inclined surfaces, and a spring is provided between the protective plate and the incubator.

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