A device for comprehensive prevention and control of pandanus boring tip pests and a use method thereof

Abstract

The application discloses a device for comprehensive prevention and control of Argyrodacus subfuscus, which comprises a material guide pipe, a limiting piece, a limiting plate, a pulling rod, a windward plate and a rotating shaft. The limiting piece is fixed in the material guide pipe and arranged along the length direction of the material guide pipe. The lower cavity of the material guide pipe is also provided with the limiting plate, the rotating shaft, the windward plate and the pulling rod. The limiting plate is located below the limiting piece, and the spacing between the upper end of the limiting plate and the limiting piece forms a ball-throwing opening. The size of the ball-throwing opening is larger than the diameter of the oviposition ball. The lower end of the limiting plate extends downward and is fixed on the inner wall of the material guide pipe. The rotating shaft is arranged below the limiting plate. The rotating shaft crosses the material guide pipe and is connected to the opposite walls of the material guide pipe. The middle part of the pulling rod is connected to the rotating shaft. The upper end of the pulling rod penetrates the limiting plate, and the lower part of the pulling rod is fixed with the windward plate. The device has the advantages of compact structure, low cost, high efficiency of releasing Trichogramma eggs and the like.

Description

Technical Field

[0001] This invention relates to the field of pest control technology, and in particular to a device and method for the integrated control of twig borers in *Pterocarya stenoptera*. Background Technology

[0002] *Imperata cylindrica* is a Class II protected wild plant in China. Its wood is hard and rot-resistant, known as "ironwood," and is an excellent material for construction, crafts, and furniture. For example, the Zhenwu Pavilion in Rong County, Guangxi, was built using *Imperata cylindrica* heartwood and remains intact after more than 400 years. At the same time, *Imperata cylindrica* has a lush, green canopy, making it an excellent ornamental tree and a pioneer species for afforestation in barren lands, significantly contributing to water conservation and soil improvement. It thrives in humid climates from the subtropical to tropical regions with an average temperature above 20℃. It requires an average temperature of 11-14℃ in the coldest month and 26-28℃ in the hottest month. It can tolerate light frost and short periods of low temperatures around 0℃, with an extreme minimum temperature of around -3℃. It requires an annual accumulated temperature of over 7500℃, annual precipitation of 1200-2000 mm, and a relative humidity above 78%. Afforestation sites should ideally be deep, acidic sandy loam or light clay soil below 600m altitude.

[0003] The litchi heterocarpa (Cryptophlebia ombrodelta) belongs to the genus Cryptophorbia in the family Tortricidae of the order Lepidoptera. It has a wide host range and is a global pest, especially in tropical and subtropical regions. This insect's damage is concealed, making control difficult. Previously, attention was mainly focused on its damage to economic forests such as longan, litchi, and macadamia, with less attention paid to its occurrence patterns and damage in timber forests. Erythrophleum fordii is an evergreen broad-leaved tree species of the family Caesalpiniaceae, and is one of the valuable timber species in tropical and subtropical regions of my country. It is widely used in forestry construction in South China, but its plantations have long been severely damaged by the litchi heterocarpa, becoming a key limiting factor restricting the healthy development of Erythrophleum fordii plantations.

[0004] The existing literature, "Life history and control of litchi heterocarpa in 'Gemu' plantations, Zhao Zhigang et al.", studied the life history and control of litchi heterocarpa.

[0005] Trichogramma wasps are a type of oviparous parasitic wasp widely used in agricultural production. After emerging in the field, female Trichogramma wasps actively seek out insect eggs, pierce the eggshell with their ovipositor, lay their own eggs inside, and absorb the nutrients from the insect eggs to develop and grow. The parasitized insect eggs cannot develop normally, thus achieving the purpose of pest control. This method can effectively control pests and has achieved certain economic, ecological, and social benefits.

[0006] With the gradual maturation and popularization of civilian drone technology, both domestic and international researchers have begun to explore the possibility of mechanized release of Trichogramma wasps. Existing release equipment includes Trichogramma wasp release devices that use drones as carriers. For example, existing patent document CN118947640A discloses an operation method for a drone-mounted Trichogramma wasp nest dispenser. This method solves the problem of large release errors caused by the inability to automatically match the drone's flight path with the release path during existing drone-mounted Trichogramma wasp nest dispensers.

[0007] The above background information is provided only to aid in understanding the concept and technical solution of this invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0008] The main objective of this invention is to provide a device and method for the integrated control of wood borers that are compact in structure, low in cost, and highly efficient in releasing Trichogramma wasp eggs.

[0009] Therefore, this invention proposes a device and method for the comprehensive control of leaf-boring pests in *Pterocarya stenoptera*.

[0010] Preferably, the present invention may also have the following technical features:

[0011] A device for integrated control of leaf-boring pests on *Pterocarya stenoptera* includes a feed tube, a limiting component, a limiting plate, a lever, a wind-facing plate, and a rotating shaft. The limiting component is fixed inside the feed tube and arranged along its length. The lower cavity of the feed tube is also equipped with the limiting plate, the rotating shaft, the wind-facing plate, and the lever. The limiting plate is located below the limiting component, and the distance between its upper end and the limiting component forms a ball-throwing opening. The size of the ball-throwing opening is larger than the diameter of the ball to be thrown. The lower end of the limiting plate extends downward at an angle and is fixed to the inner wall of the feed tube, with the rotating shaft located below it. The rotating shaft passes through the feed tube, and its two ends are respectively connected to opposite walls of the feed tube. The middle part of the lever is connected to the rotating shaft, its upper end extends above the limiting plate, and the wind-facing plate is fixed to its lower part.

[0012] Furthermore, the lever is divided into two parts, including an upper lever and a lower lever, which are respectively connected to the rotating shaft, so that the lever swings through the rotating shaft.

[0013] Furthermore, the included angle between the upper lever and the lower lever is greater than 90°, and the center of gravity of the upper lever is located on the right side of the pivot, tending to rotate clockwise.

[0014] Furthermore, the limiting plate has a guide groove that extends to the right from its center, and the upper part of the lever passes through the guide groove to the top of the limiting plate.

[0015] Furthermore, the lower end diameter of the feed tube gradually increases and then gradually decreases until it returns to its original diameter.

[0016] Furthermore, the lower end of the limiting member is connected to several arc-shaped pieces, each arc-shaped piece forming a tube, so that the arc-shaped pieces and the inner wall at the gradually increasing tube diameter form a turning channel for the thrown ball to enter the limiting plate.

[0017] Furthermore, the lower part of the lower lever extends below the lower end of the guide tube, and the wind-facing plate is fixed on its body. The surface of the wind-facing plate is parallel to the axis of the rotating shaft.

[0018] Furthermore, it also includes a brush, the upper part of which is fixed to the lower end of the limiting member, and the lower part extends downward so that the distance between the lower end of the brush and the limiting plate is less than the diameter of the ball.

[0019] Furthermore, the limiting member is a circular tube structure with a diameter smaller than that of the guide tube. The circular tube is fixed inside the guide tube, and the distance between its outer side and the inner wall of the guide tube is greater than the diameter of the ball, forming the guide channel. The inner cavity of the circular tube forms an air guiding channel.

[0020] A method of using the device described above for integrated pest management of twig borers in *Pterocarya stenoptera* includes the following steps:

[0021] S1. Fix the upper end of the feed tube to the drone, directly below the drone's fuselage, with the side of the feed tube containing the egg-throwing ball closer to the drone's nose.

[0022] S2. Place an appropriate amount of egg-throwing balls into the guide tube and start the drone to fly forward to the Gemu control area;

[0023] S3. After the drone flies to the designated area, it hovers in the air and then accelerates backward. At this time, the side of the wind vane away from the nose is impacted by the wind, and the lever rotates counterclockwise to push the egg ball out of the throwing port.

[0024] S4. Observe whether the ball was successfully thrown according to the camera on the drone. After the ball is thrown, continue to fly forward and move down to the throwing point, and then perform the operation of step S3 until the egg ball throwing operation is completed.

[0025] The beneficial effects of this invention compared with the prior art include: (1) The force of the wind on the windward plate drives the rotation direction of the lever, thereby pushing out the egg-throwing ball on the limiting plate, realizing the pure mechanical structure for egg-throwing ball delivery. The structure is simple and lightweight, reducing the workload of the UAV, improving the UAV's endurance, and reducing the requirements for the UAV. (2) The assembly relationship between the lever and the guide groove makes the structural connection more compact and easier to arrange the lever. In addition, the guide groove can also limit the swing amplitude of the lever, avoiding disorderly swing of the lever. (3) When the windward plate on the lever is not subjected to external force, the design of the lever's center of gravity being biased to the right above the pivot makes the lever have a clockwise rotation tendency, thereby avoiding disorderly and random collisions of the lever with the first egg-throwing ball, reducing the occurrence of accidental egg-throwing events. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0027] Figure 2 This is a partial structural schematic diagram of the present invention.

[0028] Figure 3 This is one embodiment of the limiting component of the present invention.

[0029] Figure 4 This is another embodiment of the limiting member of the present invention. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope or application of the present invention.

[0031] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0032] like Figures 1-4The device shown is for the integrated control of wood-boring pests on paulownia trees. It includes a feed tube 1, a limiting component 3, a limiting plate 6, a lever 8, a wind-facing plate 9, and a rotating shaft 7. The limiting component 6 is fixed inside the feed tube 1 and arranged along its length, creating a guide channel 2 for arranging egg-throwing balls 10 within the internal space of the feed tube 1. The guide channel 2 is larger than the size of the egg-throwing balls 8, allowing them to be stacked sequentially within the guide channel 2. The lower cavity of the feed tube 1 is also equipped with the limiting plate 6, the rotating shaft 7, the wind-facing plate 9, and the lever 8. The limiting plate 6 is located below the limiting component 3, and the distance between its upper end and the limiting component 3 forms a ball-throwing opening 11. The size of the ball-throwing opening 11 is larger than the diameter of the egg-throwing balls 10, ensuring that the egg-throwing balls 10 can pass through the opening 11. The lower end of the limiting plate 6 extends downwards at an angle and is fixed to the inner wall of the feed tube 1, resulting in a left-high, right-low tilt. The rotating shaft 7 is located below the limiting plate 6. The rotating shaft 7 passes horizontally through the guide tube 1, with its two ends connected to opposite walls of the guide tube 1. The middle part of the lever 8 is connected to the rotating shaft 7, its upper end extends above the limiting plate 6, and the lower part is fixed to the wind-facing plate 9. The egg-throwing ball 10 contains a Trichogramma egg card, and the outer shell of the egg-throwing ball 10 is made of a biodegradable material, which is an existing product. Preferably, the wind-facing plate 9 is a plastic plate to reduce weight.

[0033] In use, the egg-throwing balls 10 are stacked in the guide channel 2, with the first egg-throwing ball 102 at the bottom abutting against the upper side of the limiting plate 6, and the upper side of the first egg-throwing ball 102 abutting against the second egg-throwing ball 101. Several egg-throwing balls 10 are stacked in the guide channel 2 according to the number of balls to be thrown. The lever 8 extends to the right side of the first egg-throwing ball 102. When the wind-blown plate 9 is blown by the wind, it drives the lever 8 to rotate. When the rotation of the lever 8 causes the upper end of the lever 8 to move towards the egg-throwing ball 10, the lever 8 pushes the egg-throwing ball 10 to move towards the upper end of the limiting plate 6 and falls out of the guide tube 1 through the ball-throwing port 10. In this embodiment, the force of the wind on the windward plate 9 drives the lever 8 to rotate in a specified direction, thereby pushing out the egg-throwing ball 10 on the limiting plate 9. This achieves the pure mechanical structure for launching the egg-throwing ball 10, which is simple in structure, low in weight, reduces the workload of the drone, improves the drone's endurance, and reduces the requirements for the drone.

[0034] The lever 8 is divided into two parts: an upper lever 82 and a lower lever 81, which are respectively connected to the rotating shaft 7. The purpose of installing the rotating shaft 7 and the lever 8 is to determine their installation positions while ensuring that the lever 8 can swing, including various optional swing methods such as the rotating shaft 7 swinging to drive the lever 8 to swing, or the lever 8 swinging around the rotating shaft 7. For example, both ends of the rotating shaft 7 can be fixedly connected to the guide tube 1, and the upper lever 82 and the lower lever 81 are connected by a cylinder, which is rotatably mounted on the rotating shaft 7. Alternatively, in another example, the rotating shaft 7 is rotatably connected to the guide tube 1, and the upper lever 82 and the lower lever 81 are respectively fixed to the rotating shaft 7.

[0035] Preferred, refer to Figure 2 The limiting plate 6 is an arc-shaped panel with its central axis recessed in the left and right directions to facilitate positioning of the egg-throwing ball 10. Guide limiting baffles 62 are also provided on the front and rear sides of the limiting plate 6. These, together with the lever 8, limit the right side of the egg-throwing ball 10, confining it within a predetermined space and allowing it to exit only from the throwing port 11. The limiting plate 6 has a guide groove 61 extending to the right from its center, along the central axis in the left and right directions. The upper part of the lever 8 passes through the guide groove 61 to the top of the limiting plate 6. The assembly relationship between the lever 8 and the guide groove 61 makes the structural connection more compact and easier to arrange. Furthermore, the guide groove 61 also limits the swing amplitude of the lever 8, preventing disorderly swinging. In this embodiment, under normal conditions, the lever body (lower lever 81) below the rotating shaft 7 is vertical, with its center of gravity directly below the rotating shaft 7; the lever body (upper lever 82) above the rotating shaft is tilted to the upper right, forming an angle greater than 90° with the lever body below the rotating shaft 7, preferably 130-150°. At this time, the center of gravity of the lever body above the rotating shaft 7 is located on the right side of the rotating shaft 7, causing the lever 8 to tend to rotate clockwise under normal conditions. At the same time, to limit the clockwise rotation of the lever 8, the upper part of the lever 8 abuts against the right side of the guide groove 61, and the lever 8 abuts against the first egg-throwing ball 102. In this way, when the wind-facing plate 9 on the lever 8 is not subjected to external force, the design of the center of gravity of the lever 8 above the rotating shaft 7 being tilted to the right makes the lever 8 tend to rotate clockwise, thereby preventing the lever 8 from randomly hitting the first egg-throwing ball 10 and reducing the occurrence of accidental egg-throwing events.

[0036] To enhance the airflow guidance capability, the lower diameter of the guide pipe 1 gradually increases and then gradually decreases until it returns to its original diameter, forming a distinct slope. Furthermore, the change in pipe diameter can be used to install the lever 8 and to position the first and second egg-throwing balls 102 and 101. Specifically, the lower end of the limiting member 3 is connected to several arc-shaped pieces 5, each arc-shaped piece 5 forming a tube, such that the arc-shaped pieces 5 and the inner wall at the gradually increasing pipe diameter form a turning channel for the egg-throwing ball 10 to enter the limiting plate 6. Thus, when the egg-throwing ball 10 enters the turning channel from the guide channel 2, the second egg-throwing ball 101 moves a certain distance to the lower right along the turning channel. At this time, the lower side of the second egg-throwing ball 101 abuts against the upper side of the first egg-throwing ball 102, or the lower left side of the second egg-throwing ball 101 abuts against the upper right side of the first egg-throwing ball 102, and the center deviation between the second and first egg-throwing balls 101 is 1-3 mm. The center-offset design reduces the resistance to the movement of the first ball 102 by the lever 8, while the inclined limiting plate 6 prevents the first ball 102 from being pushed out of the throwing hole 11 and causing a mis-throw. More specifically, the upper lever 82 is a bent lever with a greater slope at the top than at the bottom. Preferably, a counterweight is installed on the upper part of the upper lever 82 to enhance the counterclockwise rotation tendency of the lever.

[0037] The lower part of the lower lever 81 extends below the lower end of the guide tube 1, and the wind-facing plate 9 is fixed on its body. The surface of the wind-facing plate 9 is parallel to the axis of the rotating shaft 7. The wind resistance is increased by the wind-facing plate 9, and the direction of rotation of the lever 8 is adjusted according to different sides of the wind-facing plate 9 as the resistance side.

[0038] In a preferred embodiment, a brush 4 is also included. The brush 4 is a stiff brush, such as stiff pig bristles or a plastic brush. The upper part of the brush 4 is fixed to the lower end of the limiting member 3, and the lower part extends downward to block a portion of the throwing port 11, so that the distance between the lower end of the brush 4 and the limiting plate 6 is less than the diameter of the ball 10. By using the brush 4 to block the ball 10, the resistance of the ball 10 passing through the throwing port 11 is increased, further reducing the occurrence of misthrows.

[0039] Preferably, the feed tube 1 is a circular tube.

[0040] Reference Figure 3 The limiting member 3 is a partition 32, which divides the feed tube 1 into two cavities along the axial direction. One cavity serves as a guide channel 2, and the other cavity serves as an air guide channel 31.

[0041] Or, refer to Figure 4 The limiting member 3 is a circular tube 33, the diameter of which is smaller than the diameter of the guide tube 1. The circular tube is fixed inside the guide tube 1, and the distance between its outer side and the inner wall of the guide tube 1 is greater than the diameter of the ball 10, forming the guide channel 2. The inner cavity of the circular tube forms an air guide channel 31.

[0042] A method for using a device for integrated pest management of twig borers on paulownia trees includes the following steps:

[0043] S1. Fix the upper end of the feed tube 1 to the drone, which is located directly below the drone's fuselage. The side of the feed tube 1 with the egg-throwing ball 10 is close to the drone's nose side.

[0044] S2. Place an appropriate amount of egg-throwing balls 10 into the guide pipe 1, start the drone and fly forward to the area for the prevention and control of the black worm; during the flight of the drone, the side of the wind-facing plate 9 near the nose of the drone is impacted by the wind, increasing the tendency of the lever 8 to rotate clockwise.

[0045] S3. After the drone flies to the designated area, it hovers in the air and then accelerates backward. At this time, the side of the wind vane 9 away from the nose is impacted by the wind, and the lever 8 rotates counterclockwise, pushing the egg-throwing ball 10 out of the throwing port 11. Specifically, when the first egg-throwing ball 102 is pushed out of the throwing port 11, the lower right side of the second egg-throwing ball 101 abuts against the upper end of the upper lever 82, and the upper part of the second egg-throwing ball 101 is still within the range enclosed by the arc-shaped piece 5. As the upper lever 82 returns to its original position, the second egg-throwing ball 102 falls onto the limiting plate 6. At the same time, the brush 4 blocks part of the throwing port 11 to prevent the second egg-throwing ball 102 from falling out of the throwing port 11.

[0046] S4. Observe whether the ball was successfully thrown according to the camera on the drone. After the ball is thrown, continue to fly forward and move down to the throwing point, and then perform the operation of step S3 until the egg ball throwing operation is completed.

[0047] In the above-mentioned case, 2-3 egg-throwing balls are placed per acre of Gemu forest land, and each egg-throwing ball hatches 800-1000 larvae.

[0048] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0049] Although exemplary embodiments of the invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the invention without departing from the central concepts of the invention described herein. Therefore, the invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the invention.

Claims

1. A device for integrated control of leaf-boring pests on *Pterocarya stenoptera*, characterized in that: The device includes a guide tube, a limiting component, a limiting plate, a lever, a wind-facing plate, and a rotating shaft. The limiting component is fixed inside the guide tube and arranged along its length. The lower cavity of the guide tube is also equipped with the limiting plate, the rotating shaft, the wind-facing plate, and the lever. The limiting plate is located below the limiting component, and the distance between its upper end and the limiting component forms a throwing port. The size of the throwing port is larger than the diameter of the thrown ball. The lower end of the limiting plate extends downward at an angle and is fixed to the inner wall of the guide tube, with the rotating shaft located below it. The rotating shaft passes through the guide tube, and its two ends are respectively connected to opposite walls of the guide tube. The middle part of the lever is connected to the rotating shaft, its upper end extends above the limiting plate, and the wind-facing plate is fixed to its lower part. The lever is divided into two parts, including an upper lever and a lower lever, which are respectively connected to the rotating shaft, so that the lever swings through the rotating shaft; The included angle between the upper lever and the lower lever is greater than 90°, and the center of gravity of the upper lever is located on the right side of the pivot, with a tendency to rotate clockwise. The limiting plate has a guide groove that extends to the right from its center, and the upper part of the lever passes through the guide groove to the top of the limiting plate. The limiting plate is an arc panel with its central axis recessed in the left and right directions. The front and rear sides of the limiting plate are also provided with guide limiting baffles, which, together with the lever, limit the right side of the egg-throwing ball. The lower end diameter of the feed pipe gradually increases and then gradually decreases until it returns to the original diameter, forming a distinct slope. The lower end of the limiting member is connected to several arc-shaped pieces, each arc-shaped piece forming a tube, so that the arc-shaped pieces and the inner wall of the tube with the gradually increasing diameter form a turning channel for the egg ball to enter the limiting plate. It also includes a brush, the upper part of which is fixed to the lower end of the limiting member, and the lower part extends downward so that the distance between the lower end of the brush and the limiting plate is less than the diameter of the ball.

2. The device for integrated control of leaf-boring pests in *Pterocarya stenoptera* as described in claim 1, characterized in that: The lower part of the lower lever extends below the lower end of the guide tube, and the wind-facing plate is fixed on its body. The surface of the wind-facing plate is parallel to the axis of the rotating shaft.

3. The device for integrated control of leaf-boring pests in *Pterocarya stenoptera* as described in claim 1, characterized in that: The limiting component is a circular tube structure with a diameter smaller than that of the guide tube; the circular tube is fixed inside the guide tube, and the distance between its outer side and the inner wall of the guide tube is greater than the diameter of the ball, forming the guide channel; the inner cavity of the circular tube forms an air guide channel.

4. A method of using the device for integrated control of leaf-boring pests of *Pterocarya stenoptera* as described in claim 1, characterized in that: The steps include the following: S1. Fix the upper end of the feed tube to the drone, directly below the drone's fuselage, with the side of the feed tube containing the egg-throwing ball closer to the drone's nose. S2. Place an appropriate amount of egg-throwing balls into the guide tube and start the drone to fly forward to the Gemu control area; S3. After the drone flies to the designated area, it hovers in the air and then accelerates backward. At this time, the side of the wind vane away from the nose is impacted by the wind, and the lever rotates counterclockwise to push the egg ball out of the throwing port. S4. Observe whether the ball was successfully thrown according to the camera on the drone. After the ball is thrown, continue to fly forward and move down to the throwing point, and then perform the operation of step S3 until the egg ball throwing operation is completed.

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