Device and method for regulating seed germination and seedling growth of asparagus through laser

Abstract

The invention discloses a device and a method for regulating asparagus seed germination and seedling growth by laser, and relates to the technical field of regulating asparagus seed germination by laser, the device comprises a base, the upper surface of the base is rotatably connected with a turntable through a bearing, and the upper side of the turntable is provided with a protective plate; a protective plate is arranged on the upper side of the base, the lower surface of the protective plate makes contact with the upper surface of the rotating disc, a first connecting arm is fixedly connected to the outer wall of the protective plate, the lower end of the first connecting arm is fixedly connected with the outer wall of the base, a shielding plate is arranged on the upper side of the protective plate, and a second connecting arm is fixedly connected to the outer wall of the shielding plate. According to the seed irradiation device, the seeds can uniformly rotate in the irradiation process, so that the effects of uniformly receiving illumination and improving the illumination effect of the seeds are generated, the efficiency of asparagus seed germination and seedling growth is improved, and the seed irradiation device has the characteristics of high practicability and capability of promoting germination of the seeds under laser irradiation.

Description

Technical Field

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

[0002] Asparagus, also known as Asparagus officinalis, is a dioecious perennial herbaceous plant of the genus Asparagaceae. Its tender stems are eaten fresh or processed. Asparagus is rich in a variety of amino acids, vitamins and histones that are essential to the human body. Its content is higher than that of ordinary vegetables and fruits. In particular, asparagine and trace elements such as selenium, molybdenum, chromium and manganese in asparagus can regulate the body's metabolism and improve the body's immunity.

[0003] The length of time that asparagus seeds break dormancy during germination directly affects the germination period of the seeds, which is manifested as germination potential. The higher the germination potential, the better the germination quality and the better the seed survival rate. The lower the germination potential and the longer the germination period, the less conducive it is to germination. If the seeds have not germinated after 10 days of germination, the probability of mold and rot will greatly increase. The price of asparagus seeds is high, and the germination situation directly affects the cost of seed investment. Lasers cause DNA mutations in crops through the combined effects of light, electricity, pressure and electromagnetic effects, thereby causing changes in certain traits of crop varieties. When seeds are exposed to lasers of a specific intensity, photons are absorbed by light-absorbing molecules in plant cells. The absorbed energy triggers a series of photochemical reactions and signal transduction pathways, thereby promoting seed germination and improving seedling quality. The use of laser radiation can improve the germination potential of asparagus seeds, reduce seed loss, and control costs; Therefore, it is necessary to design a device and method for laser regulation of asparagus seed germination and seedling growth that is highly practical and can promote the germination of seeds under laser irradiation. Summary of the invention

[0004] The object 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 technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: 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 via a bearing, a guard plate is arranged on the upper side of the turntable, the lower surface of the guard plate contacts the upper surface of the turntable, a first connecting arm is fixedly connected to the outer wall of the guard plate, the lower end of the first connecting arm is fixedly connected to the outer wall of the base, a shield plate is arranged on the upper side of the guard plate, the outer wall of the shield plate is fixedly connected to the second connecting arm, the lower end of the second connecting arm is fixedly connected to the outer wall of the guard plate, a feed hopper is fixedly connected to the side wall of the shield plate, one end of the feed hopper extends to a part of the shield plate, a mounting hole is opened on the shield plate, an irradiation lamp is fixedly connected to the inner wall of the mounting hole, and the lower surface of the base is fixedly connected to A motor is connected, and a transmission rod is arranged in the middle of the base, the lower end of the transmission rod is located at the lower side of the base, the upper end of the transmission rod passes through the base and 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, the outer wall of the transmission gear is connected to the output end of the motor through a bevel gear transmission, the outer wall of the upper end 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 guide plate, the other end of the guide plate is fixedly connected to the inner wall of a guard plate, a notch is provided on the lower side of one end of the guide 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 guide plate.

[0006] According to the above technical solution, the side wall of the guard plate is also provided with a flipping mechanism, the upper side of the turntable is provided with a spreading mechanism, the middle part of the baffle is fixedly connected with a fixed pipe, the fixed pipe connects the lower side of the baffle with the upper side of the baffle, the upper end of the fixed pipe is fixedly connected with a connecting pipe, the other end of the connecting pipe is provided with a vacuum pump, and the interior of the connecting pipe is connected with the input end of the vacuum pump.

[0007] According to the above technical solution, the flipping 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 passes 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 lever, one side of the lever is connected to the outer wall of the fixing ring through a torsion spring, the lower side of the lever is provided with a downward protrusion, and the upper side of the outer wall of the turntable is fixedly connected to a lever block.

[0008] According to the above technical solution, a plurality of shift blocks are arranged on the upper side of the outer wall of the guard plate, and the plurality of shift blocks are arranged in a ring shape on the upper side of the guard plate, and the shift blocks can rotate along with the guard plate, the shift rod is located on the rotation path of the shift blocks, and an exhaust slit is opened on the lower side of the exhaust pipe.

[0009] According to the above technical solution, the paving mechanism includes a first paving rod, one end of which is fixedly connected to the outer wall of a fixed ring, the other end of which is fixedly connected to the inner wall of a guard plate, the outer wall of the fixed ring is also fixedly connected to a transparent baffle, 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, the outer wall of the fixed ring is located on the side of the exhaust pipe away from the first paving rod and is fixedly connected to a second paving rod, the end of the second paving rod away from the fixed ring is fixedly connected to the inner wall of the guard plate.

[0010] According to the above technical solution, the lower side of the first spreading 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. The lower surface of the transparent baffle is provided with a protrusion, and the length of the protrusion on the lower surface of the transparent baffle is smaller than the thickness of the first spreading rod in the up and down directions. The thickness of the second spreading rod is consistent with the thickness of the first spreading rod.

[0011] A method for laser regulating asparagus seed germination and seedling growth, wherein uncoated asparagus seeds are poured into a feed hopper and irradiated with blue light by an irradiation lamp, wherein the wavelength of the blue light is 440nm-450nm and the light intensity is 5.11μmol / m2 / s, and a transmission gear and a turntable are driven by a motor to rotate, and the rotation speed of the turntable is 5min / turn. After the seeds rotate to a guide plate, they are discharged through a discharge port under the guidance of the guide plate, thereby completing the pretreatment of irradiation for 5min for the seeds. After washing, the uncoated seeds are soaked in warm water at 55℃ for 15 minutes, and then soaked in 250 times aqueous solution of 50% carbendazim wettable powder for 2 hours at room temperature for disinfection. After rinsing, the seeds are soaked in 20℃~25℃ water for 48h~72h. During the soaking period, rinse and change the water 2~3 times. After the seeds swell, wrap them with multiple layers of wet gauze, keep them moist and germinate at 25℃~28℃, rinse 1~2 times a day, and sow them after 20%~30% of the seeds turn white.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention provides a turntable so that the seeds can perform uniform rotation during the irradiation process, thereby producing an effect of uniformly receiving light and improving the light effect of the seeds, thereby improving the efficiency of asparagus seed germination and seedling growth; By providing a turning mechanism, the seeds can be automatically turned over during the irradiation process, thereby producing an effect that all angles of the seed surface receive light evenly, effectively improving the comprehensiveness of the seed surface light; By providing a spreading mechanism, the seeds can be evenly distributed on the turntable, thereby preventing seed accumulation and ensuring uniform illumination, thereby improving the utilization rate of the light on the seed surface; By providing an exhaust fan, the air in the irradiation chamber is kept clean, thereby reducing the impact of air suspended matter on the lighting effect, while avoiding damage to seeds caused by high temperature and ensuring the stability of the lighting environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying 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 of the present invention. In the accompanying drawings: Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the lower structure of the present invention; Figure 3 Schematic diagram of the lower structure of the shield of the present invention; Figure 4 It is a schematic diagram of the upper structure of the turntable of the present invention; Figure 5 It is a schematic diagram of the transparent baffle structure of the present invention; Figure 6 The present invention Figure 4 A is a schematic diagram of the enlarged structure of the middle part; In the figure: 1. base; 2. turntable; 3. guard plate; 4. first connecting arm; 5. feed hopper; 6. shield plate; 7. second connecting arm; 8. irradiation lamp; 9. motor; 10. transmission rod; 11. transmission gear; 12. guide plate; 13. flipping mechanism; 14. paving mechanism; 15. fixing ring; 16. fixing pipe; 17. connecting pipe; 18. vacuum pump; 301. air pump; 302. hose; 303. exhaust pipe; 304. lever; 305. lever block; 401. first paving rod; 402. transparent baffle; 403. second paving rod. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] See also Figure 1-6The present invention provides a technical solution: a device for laser regulating the germination of asparagus seeds and the growth of seedlings, comprising 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 on the upper side of the turntable 2, the lower surface of the guard plate 3 contacts 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 arranged 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, a 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 opened 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, and a transmission is arranged in the middle of the base 1. Moving rod 10, the lower 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, 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 a bevel gear transmission, the upper end outer wall 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, a discharge port is provided on the side wall of the guard plate 3, and the discharge port is provided on the side wall of the guard plate 3 located on the front side of the guide plate 12; When treating the seeds, the uncoated asparagus seeds are poured into the feed hopper 5, and irradiated with blue light through the irradiation lamp 8, the blue light wavelength is 440nm-450nm, the light intensity is 5.11μmol / m2 / s, and the transmission gear 11 is driven by the motor 9, so that the transmission gear 11 drives the transmission rod 10 and the turntable 2 to rotate, and the rotation speed of the turntable 2 is 5min / turn. After the seeds enter the feed hopper 5, they will roll to the upper side of the turntable 2. As the turntable 2 rotates, the seeds will be driven to move at a uniform speed under the irradiation of the irradiation lamp 8. Since the shield 6, the guard plate 3, and the base 1 form a relatively closed space, the external light of the irradiation cavity formed inside is reduced, and the influence of other stray light on the irradiation can be reduced; After the seeds rotate to the guide plate 12, they are discharged through the discharge port under the guidance of the guide plate 12, so that the seeds complete the 5-minute irradiation pretreatment; After washing, the uncoated seeds are soaked in warm water at 55℃ for 15 minutes, and then soaked in 250 times aqueous solution of 50% carbendazim wettable powder for 2 hours at room temperature for disinfection. After rinsing, the seeds are soaked in water at 20℃~25℃ for 48h~72h. During the soaking period, rinse and change the water 2~3 times. After the seeds swell, wrap them with multiple layers of wet gauze, keep them moist and germinate at 25℃~28℃, rinse them 1~2 times a day, and sow them after 20%~30% of the seeds are white. The side wall of the guard plate 3 is also provided with a flipping mechanism 13, and the upper side of the turntable 2 is provided with a paving mechanism 14. The flipping 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, and 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, and 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 through a bearing, and the exhaust pipe 303 is connected to the outer wall of the fixing ring 15 through a bearing. The outer wall of the air pipe 303 is fixedly connected with a lever 304, one side of the lever 304 is connected to the outer wall of the fixing ring 15 through a torsion spring, a downward protrusion is arranged on the lower side of the lever 304, a shift block 305 is fixedly connected to the upper side of the outer wall of the turntable 2, a plurality of shift blocks 305 are arranged on the upper side of the outer wall of the guard plate 3, the plurality of shift blocks 305 are arranged in an annular shape on the upper side of the guard plate 3, and the shift blocks 305 can rotate with the guard plate 3, the lever 304 is located on the rotation path of the shift blocks 305, and an exhaust slit is opened on the lower side of the exhaust pipe 303; When in use, the air pump 301 can be started to supply air to the hose 302, so that the hose 302 transports the airflow to the exhaust pipe 303 and then 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 over by the airflow, so that during the movement, the surface of the seeds can be more evenly exposed to light by turning over, thereby promoting the lighting effect. The paving mechanism 14 includes a first paving rod 401, one end of which 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. The outer wall of the fixing ring 15 is also fixedly connected to a transparent baffle 402, and 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 contacts the outer wall of the first paving rod 401, and the outer wall of the fixing ring 15 is located on the side of the exhaust pipe 303 away from the first paving rod 401. A second paving rod 403 is fixedly connected, and one 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, and a protrusion is provided on the lower surface of the transparent baffle 402, and the protrusion length of 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, and the thickness of the second paving rod 403 is consistent with the thickness of the first paving rod 401; After the seeds fall on the turntable 2, they may accumulate. Therefore, when passing the lower side of the first spreading rod 401, the seeds on the upper side will be scraped off to the rear side of 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, the seeds will be spread evenly on both sides in the subsequent forward movement of the seeds, so that the seeds can receive light better. In addition, during the process of squeezing and paving the seeds, the upper seeds in the front and the lower seeds in the rear are constantly rubbed against each other, so that the adhesion on the surface of the seeds is removed by friction, and the dial block 305 is continuously driven to dial the dial rod 304 during the rotation of the turntable 2, so that the exhaust angle of the dial rod 304 is continuously changed, and air can be blown at different angles on the surface of the seeds, so that the adhesion on the surface of the seeds is blown away from the surface of the seeds after passing through the lower side of the exhaust pipe 303, thereby reducing the obstruction of light by the adhesion on the surface of the seeds and promoting the effect of the seeds receiving light; A fixed pipe 16 is fixedly connected to the middle of the shield plate 6, and the fixed pipe 16 connects the lower side of the shield plate 6 with the upper side of the shield plate 6. A connecting pipe 17 is fixedly connected to the upper end of the fixed pipe 16, and an air pump 18 is arranged at the other end of the connecting pipe 17. The interior of the connecting pipe 17 is connected to the input end of the air pump 18. When the seeds are exposed to light, a vacuum pump 18 can be used to evacuate the inside of the irradiation chamber through the connecting tube 17 and the fixed tube 16, thereby extracting the turbid gas blown up by the exhaust pipe 303 inside the irradiation chamber, so that the air inside the irradiation chamber remains clean, thereby preventing air suspended matter from affecting the light and preventing the high temperature of the irradiation lamp 8 from damaging the seeds when it is working.

[0016] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0017] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in 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 guard plate (3); the plurality of shifting blocks (305) are arranged in a ring shape on the upper side of the guard plate (3); and the shifting blocks (305) can rotate along with the guard plate (3); 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).

7. A method for laser regulation of asparagus seed germination and seedling growth, characterized in that: Asparagus seeds that have not been coated are poured into a feed hopper (5) and irradiated with blue light through an irradiation lamp (8), wherein the wavelength of the blue light is 440nm-450nm and the light intensity is 5.11μmol / m2 / s. A motor (9) drives a transmission gear (11) and a turntable (2) to rotate, and the rotation speed of the turntable (2) is 5min / revolution. After the seeds rotate to the guide plate (12), they are discharged through a discharge port under the guidance of the guide plate (12), thereby completing the pretreatment of the seeds by irradiation for 5min. After washing, the uncoated seeds are soaked in warm water at 55℃ for 15 minutes, and then soaked in 250 times aqueous solution of 50% carbendazim wettable powder for 2 hours at room temperature for disinfection. After rinsing, the seeds are soaked in 20℃~25℃ water for 48h~72h. During the soaking period, rinse and change the water 2~3 times. After the seeds swell, wrap them with multiple layers of wet gauze, keep them moist and germinate at 25℃~28℃, rinse 1~2 times a day, and sow them after 20%~30% of the seeds turn white.

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