Device and method for regulating asparagus seed germination and seedling growth by laser

Abstract

The present invention discloses a device and method for laser-regulated germination of asparagus seeds and growth of seedlings. The present invention relates to the technical field of laser-regulated germination of asparagus seeds, and includes a base. The upper surface of the base is rotatably connected to a turntable through a bearing. A guard plate is arranged above the turntable. The lower surface of the guard plate contacts the upper surface of the turntable. The outer wall of the guard plate is fixedly connected to a first connecting arm, and the lower end of the first connecting arm is fixedly connected to the outer wall of the base. A shielding plate is arranged above the guard plate, and the outer wall of the shielding plate is fixedly connected to a second connecting arm. By providing a turntable, the present invention enables the seeds to perform uniform rotational movement during irradiation, thereby achieving the effects of uniformly receiving light and improving the light irradiation effect on the seeds, enhancing the efficiency of asparagus seed germination and seedling growth, and having the characteristics of strong practicability and promoting the germination of seeds under laser irradiation.

Description

Technical Field

[0001] The present invention relates to the technical field of laser regulation of asparagus seed germination, and specifically to a device and method for laser regulation of asparagus seed germination and seedling growth. Background Art

[0002] Asparagus (Asparagus) is scientifically named Asparagus officinalis, and is a dioecious perennial rhizomatous herb of the genus Asparagus in the family Asparagaceae. The tender stems that grow are used for fresh food or processing. Asparagus is rich in various amino acids, vitamins and histone necessary for the human body, and its content is higher than that of general vegetables and fruits. Especially, asparagine and trace elements such as selenium, molybdenum, chromium, and manganese in asparagus have the effect of regulating the body's metabolism and improving the body's immunity.

[0003] During the asparagus seed germination process, the length of time to break dormancy directly affects the seed germination period, manifested as germination potential. The higher the germination potential, the better the germination quality and the higher the seed survival rate. The lower the germination potential, the longer the germination period, and it is more unfavorable for germination. After 10 days of germination promotion, if the seeds have not germinated, the probability of mildew and rot will increase greatly. The price of asparagus seeds is high, and the germination situation directly affects the seed input cost. Laser acts through the comprehensive action of light, electricity, pressure and electromagnetic effects to cause DNA mutations in crops, thereby causing certain trait changes in crop varieties. When seeds are exposed to laser of a specific intensity, photons will be absorbed by light-absorbing molecules in plant cells. The absorbed energy will trigger a series of photochemical reactions and signal transduction pathways, thus promoting seed germination and improving seedling quality, etc. Using laser radiation can improve the germination potential of asparagus seeds, reduce seed loss and control costs;

[0004] Therefore, it is necessary to design a device and method for laser regulation of asparagus seed germination and seedling growth with strong practicability and capable of promoting seed germination under laser irradiation. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and method for laser regulation of asparagus seed germination and seedling growth to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A device for laser regulating the germination of asparagus seeds and the growth of seedlings, comprising a base. The upper surface of the base is rotatably connected to a turntable through a bearing. Above the turntable is provided a guard plate. The lower surface of the guard plate contacts the upper surface of the turntable. The outer wall of the guard plate is fixedly connected to a first connecting arm, and the lower end of the first connecting arm is fixedly connected to the outer wall of the base. Above the guard plate is provided a shielding plate. The outer wall of the shielding plate is fixedly connected to a second connecting arm, and the lower end of the second connecting arm is fixedly connected to the outer wall of the guard plate. The side wall of the shielding plate is fixedly connected to a feed hopper, and one end of the feed hopper extends to a part of the shielding plate. An installation hole is provided on the shielding plate, and the inner wall of the installation hole is fixedly connected to an irradiation lamp. The lower surface of the base is fixedly connected to a motor. In the middle of the base is provided a transmission rod. The lower end of the transmission rod is located below the base, and the upper end of the transmission rod penetrates through the base, the turntable and extends to the upper side of the turntable. And the outer wall of the transmission rod is fixedly connected to the inner wall of the turntable. The outer wall of the transmission rod is rotatably connected to the inner wall of the base through a bearing. The lower end of the transmission rod is fixedly connected to a transmission gear, and the outer wall of the transmission gear is in transmission connection with the output end of the motor through bevel gears. The upper end outer wall of the transmission rod is rotatably connected to a fixing ring through a bearing. The outer wall of the fixing ring is fixedly connected to a guiding plate, and the other end of the guiding plate is fixedly connected to the inner wall of the guard plate. A notch is provided on the lower side of one end of the guiding plate close to the fixing ring. A discharge port is provided on the side wall of the guard plate, and the discharge port is provided on the side wall of the guard plate at the front side of the guiding plate.

[0007] According to the above technical solution, a turning mechanism is further provided on the side wall of the guard plate, a paving mechanism is provided above the turntable, a fixing pipe is fixedly connected to the middle of the shielding plate, and the fixing pipe communicates the lower side and the upper side of the shielding plate. The upper end of the fixing pipe is fixedly connected to a connecting pipe, and the other end of the connecting pipe is provided with an air extractor, and the inside of the connecting pipe is communicated with the input end of the air extractor.

[0008] According to the above technical solution, the turning mechanism includes an air pump. The upper surface of the air pump is fixedly connected to the lower surface of the base. The output end of the air pump is fixedly connected to a hose. The upper end of the hose is fixedly connected to an exhaust pipe. One end of the exhaust pipe penetrates through the guard plate and extends to the inside of the guard plate. The end of the exhaust pipe located inside the guard plate is rotatably connected to the outer wall of the fixing ring through a bearing. The outer wall of the exhaust pipe is fixedly connected to a dial rod. One side of the dial rod is connected to the outer wall of the fixing ring through a torsion spring. A downward protrusion is provided on the lower side of the dial rod. An adjusting block is fixedly connected to the upper side of the outer wall of the turntable.

[0009] According to the above technical solution, several dial blocks are arranged on the upper side of the outer wall of the turntable. The several dial blocks are arranged in a ring on the upper side of the turntable, and the dial blocks can rotate following the turntable. The dial rod is located on the rotation path of the dial blocks, and an exhaust slit is formed on the lower side of the exhaust pipe.

[0010] According to the above technical solution, the paving mechanism includes a first paving rod. One end of the first paving rod is fixedly connected to the outer wall of the fixed ring, and the other end of the first paving rod is fixedly connected to the inner wall of the guard plate. A transparent baffle is also fixedly connected to the outer wall of the fixed ring. The other side of the transparent baffle is fixedly connected to the inner wall of the guard plate. One side of the transparent baffle is in contact with the outer wall of the first paving rod. A second paving rod is fixedly connected to the outer wall of the fixed ring at a position away from the first paving rod of the exhaust pipe. The end of the second paving rod away from the fixed ring is fixedly connected to the inner wall of the guard plate.

[0011] According to the above technical solution, the lower side of the first paving rod does not contact the upper surface of the turntable, and the lower surface of the transparent baffle does not contact the upper surface of the turntable. A protrusion is arranged on the lower surface of the transparent baffle. The length of the protrusion on the lower surface of the transparent baffle is less than the thickness of the first paving rod in the up-down direction. The thickness of the second paving rod is the same as the thickness of the first paving rod.

[0012] A method for laser regulating the germination of asparagus seeds and the growth of seedlings. Uncoated asparagus seeds are poured into the interior of the feed hopper, and blue light with a wavelength of 440 nm - 450 nm and a light intensity of 5.11 μmol / m2 / s is irradiated by an irradiation lamp. The turntable is rotated by driving the transmission gear by a motor. The rotation speed of the turntable is 1 revolution per 5 minutes. After the seeds rotate to the guide plate, they will be discharged through the discharge port under the guidance of the guide plate, thereby completing the 5-minute pre-treatment of irradiation for the seeds.

[0013] The uncoated seeds are washed and soaked in warm water at 55 °C for 15 minutes, and then soaked and disinfected in a 250-fold aqueous solution of 50% carbendazim wettable powder at room temperature for 2 hours. After the seeds are rinsed, they are soaked in water at 20 °C - 25 °C for 48 h - 72 h. During the soaking period, they are rinsed and the water is changed 2 - 3 times. After the seeds absorb water and swell, they are wrapped with multiple layers of wet gauze and moisturized and germinated at 25 °C - 28 °C, and rinsed 1 - 2 times a day. Sowing can be carried out after 20% - 30% of the seeds show white tips.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: By arranging a turntable, the present invention enables the seeds to perform a uniform rotational movement during irradiation, thereby achieving the effects of uniformly receiving light and improving the light irradiation effect on the seeds, and improving the efficiency of the germination of asparagus seeds and the growth of seedlings.

[0015] By setting up a turning mechanism, the seeds can be automatically turned over during the irradiation process, thereby achieving the effect that all angles of the seed surface receive light evenly, effectively improving the comprehensiveness of light illumination on the seed surface;

[0016] By setting up a spreading mechanism, the seeds can be evenly distributed on the turntable, thereby achieving the effects of preventing seed accumulation and ensuring uniform light illumination, and improving the utilization rate of light illumination on the seed surface;

[0017] By setting up an air extractor, the air in the irradiation chamber is kept clean, thereby achieving the effect of reducing the influence of air suspensions on the light illumination effect. At the same time, it avoids the damage of high temperature to the seeds and ensures the stability of the light illumination environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0020] Figure 2 is a schematic diagram of the lower structure of the present invention;

[0021] Figure 3 is a schematic diagram of the lower structure of the baffle of the present invention;

[0022] Figure 4 is a schematic diagram of the upper structure of the turntable of the present invention;

[0023] Figure 5 is a schematic diagram of the structure of the transparent baffle of the present invention;

[0024] Figure 6 is the present invention Figure 4 an enlarged schematic diagram of A in;

[0025] In the figure: 1, base; 2, turntable; 3, guard plate; 4, first connecting arm; 5, feed hopper; 6, baffle; 7, second connecting arm; 8, irradiation lamp; 9, motor; 10, transmission rod; 11, transmission gear; 12, guide plate; 13, turning mechanism; 14, spreading mechanism; 15, fixing ring; 16, fixing pipe; 17, connecting pipe; 18, air extractor; 301, air pump; 302, hose; 303, exhaust pipe; 304, dial rod; 305, dial block; 401, first spreading rod; 402, transparent baffle; 403, second spreading rod. DETAILED DESCRIPTION OF THE INVENTION

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-6 , the present invention provides a technical solution: a device for laser regulating the germination of asparagus seeds and the growth of seedlings, including a base 1. The upper surface of the base 1 is rotatably connected to a turntable 2 through a bearing. A guard plate 3 is arranged above the turntable 2. The lower surface of the guard plate 3 is in contact with the upper surface of the turntable 2. The outer wall of the guard plate 3 is fixedly connected to a first connecting arm 4. The lower end of the first connecting arm 4 is fixedly connected to the outer wall of the base 1. A shielding plate 6 is arranged above the guard plate 3. The outer wall of the shielding plate 6 is fixedly connected to a second connecting arm 7. The lower end of the second connecting arm 7 is fixedly connected to the outer wall of the guard plate 3. A feed hopper 5 is fixedly connected to the side wall of the shielding plate 6. One end of the feed hopper 5 extends to a part of the shielding plate 6. An installation hole is opened on the shielding plate 6. The inner wall of the installation hole is fixedly connected to an irradiation lamp 8. The lower surface of the base 1 is fixedly connected to a motor 9. A transmission rod 10 is arranged in the middle of the base 1. The lower end of the transmission rod 10 is located below the base 1. The upper end of the transmission rod 10 penetrates through the base 1, the turntable 2 and extends to the upper side of the turntable 2. And the outer wall of the transmission rod 10 is fixedly connected to the inner wall of the turntable 2. The outer wall of the transmission rod 10 is rotatably connected to the inner wall of the base 1 through a bearing. The lower end of the transmission rod 10 is fixedly connected to a transmission gear 11. The outer wall of the transmission gear 11 is connected to the output end of the motor 9 through bevel gear transmission. The outer wall of the upper end of the transmission rod 10 is rotatably connected to a fixing ring 15 through a bearing. The outer wall of the fixing ring 15 is fixedly connected to a guide plate 12. The other end of the guide plate 12 is fixedly connected to the inner wall of the guard plate 3. A notch is opened on the lower side of one end of the guide plate 12 close to the fixing ring 15. A discharge port is opened on the side wall of the guard plate 3. The discharge port is opened on the side wall of the guard plate 3 at the front side of the guide plate 12.

[0028] When treating the seeds, uncoated asparagus seeds are poured into the interior of the feed hopper 5, and blue light with a wavelength of 440 nm - 450 nm and a light intensity of 5.11 μmol / m2 / s is irradiated through the irradiation lamp 8. The motor 9 is driven to drive the transmission gear 11, so that the transmission gear 11 drives the transmission rod 10 and the turntable 2 to rotate. The rotation speed of the turntable 2 is 5 minutes / turn. After the seeds enter the interior of the feed hopper 5, they will roll onto the upper side of the turntable 2. Since the turntable 2 rotates, it will drive the seeds to move uniformly under the irradiation of the irradiation lamp 8. Since the shielding plate 6, the guard plate 3 and the base 1 form a relatively closed space, the external light in the formed irradiation cavity is reduced, and the influence of other stray light on the irradiation can be reduced.

[0029] After the seeds rotate to the guide plate 12, they will be discharged through the discharge port under the guidance of the guide plate 12, so that the seeds can complete the pretreatment of irradiation for 5 minutes;

[0030] The seeds without coating treatment are washed and soaked in warm water at 55 °C for 15 minutes, then soaked in a 250-fold aqueous solution of 50% carbendazim wettable powder for 2 hours at room temperature. After the seeds are rinsed, they are soaked in water at 20 °C - 25 °C for 48 - 72 hours. During the soaking period, the water is rinsed and changed 2 - 3 times. After the seeds imbibe, they are wrapped with multiple layers of wet gauze and moisturized and germinated at 25 °C - 28 °C, rinsed 1 - 2 times a day. When 20% - 30% of the seeds show white tips, they can be sown;

[0031] A turning mechanism 13 is further arranged on the side wall of the guard plate 3, and a spreading mechanism 14 is arranged on the upper side of the turntable 2. The turning mechanism 13 includes an air pump 301. The upper surface of the air pump 301 is fixedly connected to the lower surface of the base 1. The output end of the air pump 301 is fixedly connected to a hose 302. The upper end of the hose 302 is fixedly connected to an exhaust pipe 303. One end of the exhaust pipe 303 penetrates through the guard plate 3 and extends into the interior of the guard plate 3. One end of the exhaust pipe 303 located inside the guard plate 3 is rotatably connected to the outer wall of the fixed ring 15 through a bearing. A dial rod 304 is fixedly connected to the outer wall of the exhaust pipe 303. One side of the dial rod 304 is connected to the outer wall of the fixed ring 15 through a torsion spring. A downward protrusion is arranged on the lower side of the dial rod 304. An engaging block 305 is fixedly connected to the upper side of the outer wall of the turntable 2. A plurality of engaging blocks 305 are arranged on the upper side of the outer wall of the turntable 2. The plurality of engaging blocks 305 are arranged in a ring on the upper side of the guard plate 3, and the engaging block 305 can rotate with the turntable 2. The dial rod 304 is located on the rotation path of the engaging block 305. An exhaust slit is formed on the lower side of the exhaust pipe 303;

[0032] When in use, the air pump 301 can be started to convey air to the hose 302, so that the hose 302 transports the air flow to the exhaust pipe 303 and discharges it through the exhaust slit on the lower side of the exhaust pipe 303. When the seeds pass through the exhaust pipe 303, they will be blown by the air flow to turn over, so that during the movement process, their surfaces can receive light more evenly through the turning-over method, thereby promoting the light irradiation effect;

[0033] The paving mechanism 14 includes a first paving rod 401. One end of the first paving rod 401 is fixedly connected to the outer wall of the fixing ring 15, and the other end of the first paving rod 401 is fixedly connected to the inner wall of the guard plate 3. A transparent baffle 402 is also fixedly connected to the outer wall of the fixing ring 15. The other side of the transparent baffle 402 is fixedly connected to the inner wall of the guard plate 3. One side of the transparent baffle 402 is in contact with the outer wall of the first paving rod 401. A second paving rod 403 is fixedly connected to the outer wall of the fixing ring 15 at a position away from the first paving rod 401 on the side of the exhaust pipe 303. The end of the second paving rod 403 away from the fixing ring 15 is fixedly connected to the inner wall of the guard plate 3. The lower side of the first paving rod 401 does not contact the upper surface of the turntable 2, and the lower surface of the transparent baffle 402 does not contact the upper surface of the turntable 2. A protrusion is provided on the lower surface of the transparent baffle 402, and the length of the protrusion on the lower surface of the transparent baffle 402 is less than the thickness of the first paving rod 401 in the up and down direction. The thickness of the second paving rod 403 is the same as that of the first paving rod 401;

[0034] After the seeds fall on the turntable 2, they may accumulate. Therefore, when passing through the lower side of the first paving rod 401, the seeds on the upper side will be scraped off to the rear in the moving direction. Since the transparent baffle 402 blocks the upper side of the seeds, and the protrusion on the lower side of the transparent baffle 402 affects the backward movement of the seeds to a certain extent, during the continuous forward movement of the subsequent seeds, the seeds will be evenly paved on both sides, so that the seeds can better receive light;

[0035] And during the process of squeezing and paving the seeds, due to the continuous friction between the seeds on the upper front side and the seeds on the lower rear side, the adhesives on the surface of the seeds will be removed by friction. And during the rotation of the turntable 2, the block 305 continuously drives the lever 304 to be toggled, so that the exhaust angle of the lever 304 continuously changes, and air can be blown at different angles on the surface of the seeds. Then, the adhesives on the surface of the seeds are blown off the surface of the seeds after passing through the lower side of the exhaust pipe 303, thereby reducing the blockage of the adhesives on the surface of the seeds to light and promoting the effect of the seeds receiving light;

[0036] A fixing pipe 16 is fixedly connected to the middle of the shielding plate 6. The fixing pipe 16 communicates the lower side and the upper side of the shielding plate 6. The upper end of the fixing pipe 16 is fixedly connected to a connecting pipe 17. The other end of the connecting pipe 17 is provided with an air extractor 18. The inside of the connecting pipe 17 is communicated with the input end of the air extractor 18;

[0037] During the process of the seeds receiving light, the air extractor 18 can be used to pump the air inside the irradiation cavity through the connecting pipe 17 and the fixing pipe 16, so as to pump out the turbid gas blown up by the exhaust pipe 303 inside the irradiation cavity, keep the air inside the irradiation cavity clean, thereby avoiding the influence of air suspensions on light, and avoiding the damage of the high temperature during the operation of the irradiation lamp 8 to the seeds.

[0038] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0039] Finally, it should be noted that the above are only 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 recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for laser regulation of asparagus seed germination and seedling growth, comprising a base (1), characterized in that: The upper surface of the base (1) is rotatably connected to a turntable (2) via a bearing; a guard plate (3) is provided on the upper side of the turntable (2); the lower surface of the guard plate (3) is in contact with the upper surface of the turntable (2); the outer wall of the guard plate (3) is fixedly connected to a first connecting arm (4); the lower end of the first connecting arm (4) is fixedly connected to the outer wall of the base (1); a shield plate (6) is provided on the upper side of the guard plate (3); the outer wall of the shield plate (6) is fixedly connected to a second connecting arm (7) The lower end of the second connecting arm (7) is fixedly connected to the outer wall of the guard plate (3); the side wall of the shield plate (6) is fixedly connected to a feed hopper (5); one end of the feed hopper (5) extends to a part of the shield plate (6); a mounting hole is provided on the shield plate (6); an irradiation lamp (8) is fixedly connected to the inner wall of the mounting hole; a motor (9) is fixedly connected to the lower surface of the base (1); a transmission rod (10) is provided in the middle of the base (1); the lower portion of the transmission rod (10) is The end of the transmission rod (10) is located at the lower side of the base (1), the upper end of the transmission rod (10) passes through the base (1) and the turntable (2) and extends to the upper side of the turntable (2), and the outer wall of the transmission rod (10) is fixedly connected to the inner wall of the turntable (2), the outer wall of the transmission rod (10) is rotatably connected to the inner wall of the base (1) through a bearing, and the lower end of the transmission rod (10) is fixedly connected to a transmission gear (11), and the outer wall of the transmission gear (11) is connected to the output end of the motor (9) through a bevel gear transmission. The outer wall of the upper end of the transmission rod (10) is rotatably connected to a fixing ring (15) through a bearing, the outer wall of the fixing ring (15) is fixedly connected to a guide plate (12), the other end of the guide plate (12) is fixedly connected to the inner wall of the guard plate (3), a notch is provided on the lower side of one end of the guide plate (12) close to the fixing ring (15), and a discharge port is provided on the side wall of the guard plate (3), the discharge port being provided on the side wall of the guard plate (3) located in front of the guide plate (12).

2. The device for laser regulating asparagus seed germination and seedling growth according to claim 1, characterized in that: The side wall of the guard plate (3) is also provided with a flipping mechanism (13), the upper side of the turntable (2) is provided with a spreading mechanism (14), the middle part of the baffle plate (6) is fixedly connected with a fixed pipe (16), the fixed pipe (16) connects the lower side of the baffle plate (6) with the upper side of the baffle plate (6), the upper end of the fixed pipe (16) is fixedly connected with a connecting pipe (17), the other end of the connecting pipe (17) is provided with an exhaust fan (18), and the interior of the connecting pipe (17) is connected with the input end of the exhaust fan (18).

3. The device for laser regulating asparagus seed germination and seedling growth according to claim 2, characterized in that: The flipping mechanism (13) comprises an air pump (301), the upper surface of the air pump (301) is fixedly connected to the lower surface of the base (1), the output end of the air pump (301) is fixedly connected to a hose (302), the upper end of the hose (302) is fixedly connected to an exhaust pipe (303), one end of the exhaust pipe (303) passes through the guard plate (3) and extends to the inside of the guard plate (3), one end of the exhaust pipe (303) located inside the guard plate (3) is rotatably connected to the outer wall of the fixing ring (15) via a bearing, the outer wall of the exhaust pipe (303) is fixedly connected to a lever (304), one side of the lever (304) is connected to the outer wall of the fixing ring (15) via a torsion spring, a downward protrusion is provided on the lower side of the lever (304), and a shift block (305) is fixedly connected to the upper side of the outer wall of the turntable (2).

4. The device for laser regulating asparagus seed germination and seedling growth according to claim 3, characterized in that: A plurality of shifting blocks (305) are arranged on the upper side of the outer wall of the turntable (2); the plurality of shifting blocks (305) are arranged in a ring shape on the upper side of the turntable (2); and the shifting blocks (305) can rotate along with the turntable (2); the shifting rod (304) is located on the rotation path of the shifting blocks (305); and an exhaust slit is provided on the lower side of the exhaust pipe (303).

5. The device for laser regulating asparagus seed germination and seedling growth according to claim 4, characterized in that: The paving mechanism (14) comprises a first paving rod (401), one end of the first paving rod (401) being fixedly connected to the outer wall of a fixing ring (15), the other end of the first paving rod (401) being fixedly connected to the inner wall of a guard plate (3), the outer wall of the fixing ring (15) being further fixedly connected to a transparent baffle (402), the other side of the transparent baffle (402) being fixedly connected to the inner wall of the guard plate (3), one side of the transparent baffle (402) being in contact with the outer wall of the first paving rod (401), the outer wall of the fixing ring (15) being fixedly connected to a second paving rod (403) at a side of the exhaust pipe (303) away from the first paving rod (401), the end of the second paving rod (403) away from the fixing ring (15) being fixedly connected to the inner wall of the guard plate (3).

6. The device for laser regulating asparagus seed germination and seedling growth according to claim 5, characterized in that: The lower side of the first spreading rod (401) does not contact the upper surface of the turntable (2), and the lower surface of the transparent baffle (402) does not contact the upper surface of the turntable (2); a protrusion is provided on the lower surface of the transparent baffle (402); the length of the protrusion on the lower surface of the transparent baffle (402) is smaller than the thickness of the first spreading rod (401) in the vertical direction; the thickness of the second spreading rod (403) is consistent with the thickness of the first spreading rod (401).

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