A method for preparing an insect pheromone lure

Abstract

The present application relates to the technical field of insect trapping device, in particular to a preparation method of insect pheromone lure core. The present application sets a porous aluminum tray for the preparation of lure core, first, the lure core plug is inserted into the socket of the tray, and the opening of the lure core plug is basically flat with the bottom plate of the tray, then the insect sex attractant is mixed with petroleum ether, and then poured into the tray with the lure core plug, as the petroleum ether volatilizes, the insect sex attractant penetrates into the inner wall of the lure core plug. This method can simultaneously attach insect sex attractant to multiple (hundreds) lure core plugs, and the pesticide is attached to the inner wall of the lure core plug, which can improve the preparation efficiency of the lure core and reduce the waste of insect sex attractant. Among them, the insect sex attractant is attached twice, the first time is matched with petroleum ether with a distillation range of 30-60 DEG C, and the second time is matched with petroleum ether with a distillation range of 60-90 DEG C, so that the insect sex attractant can penetrate to different depths of the lure core plug, which is beneficial to improve the loading capacity of the insect sex attractant and prolong the service life of the lure core.

Description

Technical Field

[0001] This invention belongs to the technical field of insect trapping devices, and specifically relates to a method for preparing an insect pheromone lure. Background Technology

[0002] Insect pheromones are trace chemical substances secreted by insects that attract males of the same species to mate; they are a species-specific communication system. Using insect pheromones to control pests primarily involves installing a lure loaded with insect pheromones inside a trap. The lure releases synthetically produced sex pheromones to attract and trap male insects, thereby blocking mating and reproduction. This is an economical, environmentally friendly, safe, and convenient pest control technology.

[0003] Existing lures used with insect pheromone trapping devices are generally made of rubber. They absorb and release insect pheromones through their inner walls, as exemplified by the inventors' previous patent application, "A Lure Plug" (CN205695158U). To extend the lure's lifespan and reduce replacement frequency, their internal structure and surface area are increased, as seen in the patent "An Insect Sex Phenomenon Carrier" (CN211672049U). While improved lures extend their lifespan, they still cannot meet the needs of a single sugarcane season, requiring replacement. Furthermore, the original lure preparation method involves dripping prepared insect pheromones into the lure plug using a dropper, which is inefficient and unsuitable for large-scale application. To improve lure preparation efficiency, some researchers directly soak the lure body in insect pheromones and then dry it. While this method improves efficiency, the outer wall of the lure body also carries insect pheromones, which can easily evaporate and be wasted during transportation. Therefore, it is necessary to optimize the preparation method of lures, so as to improve the preparation efficiency and reduce the waste of insect pheromones. Summary of the Invention

[0004] The purpose of this invention is to provide a method for preparing insect pheromone lures, thereby overcoming the problems of low efficiency and waste of insect information in existing lure preparation methods, and extending the service life of the lures.

[0005] To achieve the above objectives, the present invention provides a method for preparing an insect pheromone lure, comprising the following steps: (1) Prepare a tray with sockets, fill the sockets of the tray with the wick plugs, and set it aside for use; The pallet includes a base plate, side plates, and support legs. The base plate is provided with the insertion holes at intervals. The side plates are fixed around the base plate. The support legs are fixed below the base plate to support the base plate. The core plug includes a tubular body that is closed at one end and open at the other end, and the inner wall of the tubular body is irregular. After the decoy plug is inserted into the insertion hole of the tray, the outer wall of the decoy plug fits against the inner wall of the insertion hole, and the opening of the decoy plug faces upward and is flush with the bottom plate of the tray. (2) Dissolve the insect sex attractant in petroleum ether with a distillation range of 30-60°C and stir until homogeneous to obtain the first mixture. Then pour the first mixture into a tray filled with lure plugs. After the petroleum ether with a distillation range of 30-60°C in the first mixture has dried, proceed to the next preparation step. In this step, the mass ratio of insect sex pheromone to petroleum ether with a distillation range of 30-60℃ is 1-2:500-1500; (3) Dissolve the insect sex attractant in petroleum ether with a distillation range of 60-90℃ and stir evenly to obtain a second mixture. Then pour the second mixture into a tray filled with lure plugs and loaded with the first mixture. After the petroleum ether with a distillation range of 60-90℃ in the second mixture has dried, it can be packaged for later use. In this step, the mass ratio of insect pheromone to petroleum ether with a distillation range of 60–90°C is 1–2:500–1500.

[0006] The insect sex pheromone can be a commercially available sex pheromone or a self-prepared sex pheromone, and different sex pheromones can be used for different insects.

[0007] Preferably, the decoy plug further includes a slow-release plug, which includes a cylindrical body and a snap-fit ​​portion. The snap-fit ​​portion is fixed to one end of the cylindrical body and detachably connected to the open end of the tubular body. The cylindrical body is disposed within the tubular body, and a gap for gas flow is left between the cylindrical body and the tubular body. The cylindrical body is provided with a slow-release channel that penetrates the cylindrical body and is used to guide the pheromones inside the tubular body to the outside of the decoy plug.

[0008] Preferably, the sustained-release channel includes a first sustained-release channel with a large opening at one end and a second sustained-release channel with a small opening at the other end. The opening of the first sustained-release channel inside the tubular body is smaller than the opening at the other end, and the opening of the second sustained-release channel inside the tubular body is larger than the opening at the other end.

[0009] Preferably, the first sustained-release channel is located in the middle of the columnar body, and the second sustained-release channel is arranged at intervals along the outer periphery of the first sustained-release channel.

[0010] Preferably, the tubular body of the detonator has a recessed connecting portion on the inner wall near the open end, and a raised edge protruding inward at the opening edge of the tubular body below the connecting portion; the connecting portion is adapted to the size of the locking portion of the slow-release plug, and the edge of the end of the slow-release plug below the locking portion is a groove that matches the raised edge.

[0011] Preferably, the tubular body of the core plug is a hollow frustum shape, and the diameter of the closed end is smaller than the diameter of the open end.

[0012] Preferably, the decoy plug is made of rubber.

[0013] Preferably, the tray is an aluminum tray.

[0014] Preferably, in steps (2) and (3), the first mixture and the second mixture respectively cover the bottom plate of the tray by 1-2 cm.

[0015] Preferably, the insect sex pheromone is specifically a sex pheromone for the sugarcane two-spotted moth, namely cis-11-hexadecenol.

[0016] Compared with existing technologies, the present invention has the following advantages: 1. This invention uses a porous aluminum tray for lure preparation. First, lure plugs are inserted into the tray's holes, ensuring the openings of the plugs are roughly flush with the tray's bottom. Then, insect pheromones are dissolved in petroleum ether and poured into the tray. As the petroleum ether evaporates, the pheromones penetrate the inner wall of the plugs. This method can simultaneously attach insect pheromones to multiple (hundreds) of plugs, ensuring all pheromones adhere to the inner wall, thus improving lure preparation efficiency and reducing pheromone waste. The pheromones are applied in two stages: the first with petroleum ether with a distillation range of 30–60°C, and the second with petroleum ether with a distillation range of 60–90°C. This allows the pheromones to penetrate to different depths within the plugs, increasing pheromone loading and extending lure lifespan.

[0017] 2. This invention improves the lure plug by providing a slow-release plug that is detachably connected to the tubular body. This seals the opening of the tubular body, allowing the insect pheromone carried by the tubular body to be released within a relatively sealed space. The pheromone is then released through the slow-release channel to the outside of the lure plug. Compared to existing methods where the insect pheromone is released directly through the opening of the tubular body, this slow-release method achieves a sustained-release effect, extending the lure's lifespan per use and meeting the needs of a single crop season, while reducing the labor costs associated with lure replacement. Specifically, the slow-release plug features a first slow-release channel with a larger inner opening and a smaller outer opening, and a second slow-release channel with a smaller inner opening and a larger outer opening. The second slow-release channel is located in the middle of the cylindrical body. The first slow-release channels are spaced along the outer periphery of the second slow-release channels, and there are more of them than the second slow-release channels. During use, insect pheromones are primarily released from the first slow-release channels. The design of the larger inner opening and smaller outer opening results in a slower release rate of insect pheromones during the day and a faster release rate at night, thus extending the lure's lifespan while achieving better pest trapping results. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of the tray of the present invention.

[0019] Figure 2 This is a schematic diagram of the core-inducing plug of the present invention.

[0020] Figure 3 This is a cross-sectional view of the core-inducing plug of the present invention.

[0021] Figure 4 This is a schematic diagram of the disassembled structure of the core-inducing plug of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of the slow-release plug of the present invention.

[0023] Explanation of key figure labels: 1. Tray; 11. Base plate; 111. Insertion hole; 12. Side plate; 13. Support leg; 2. Inducing plug; 21. Tubular body; 211. Connecting part; 212. Protruding edge; 22. Slow-release plug; 221. Columnar body; 222. Snap-fit ​​part; 223. Slow-release channel; 2231. First slow-release channel; 2232. Second slow-release channel. Detailed Implementation

[0024] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0025] Example 1 A method for preparing an insect pheromone lure includes the following steps: (1) Prepare an aluminum tray 1 with 726 sockets 111, and fill the 726 sockets 111 with the wick plug 2, ready for use; (2) First, dissolve 2 parts by weight of insect sex attractant into 1500 parts of petroleum ether with a distillation range of 30-60℃ and stir evenly. Then pour it into tray 1 filled with attractant plug 2 (111cm above the bottom plate). After the petroleum ether with a distillation range of 30-60℃ has cooled and dried, proceed to the next preparation step. (3) Dissolve 2 parts by weight of insect sex attractant into 1500 parts of petroleum ether with a distillation range of 60-90℃ and stir evenly. Then pour it into tray 1 with 2 insert plugs obtained in step 2 (111cm above the bottom plate). After the petroleum ether with a distillation range of 60-90℃ has cooled and dried, it can be packaged for later use.

[0026] The insect pheromone is cis-11-hexadecenol, mainly used to trap the sugarcane two-spotted borer. Of course, different types of insect pheromones can be used depending on the specific needs. In this embodiment, each lure plug 2 can be coated with 0.1 grams of insect pheromone, with an effective usage period of 3 months. If the lure plug 2 is not used with the slow-release plug 22, the effective usage period is only 2 months.

[0027] Combination Figure 1 The tray 1 includes a base plate 11, side plates 12, and support legs 13. The base plate 11 has spaced-apart insertion holes 111. The side plates 12 are fixed around the base plate 11, and the support legs 13 are fixed below the base plate 11 to support it. In this embodiment, one tray 1 contains 726 insertion holes 111, and the diameter of each insertion hole 111 matches the diameter of the tubular body 21 of the decoy plug 2. In other embodiments, different specifications and numbers of insertion holes 111 can be provided depending on the size of the decoy plug 2. The tightly arranged insertion holes 111 facilitate soaking in the medicine and reduce waste of the medicine.

[0028] Combination Figure 2-4 The decoy plug 2 is a rubber plug, comprising a tubular body 21 with one end closed and the other open, and a slow-release plug 22. The slow-release plug 22 includes a cylindrical body 221 and a snap-fit ​​portion 222. The snap-fit ​​portion 222 is fixed to one end of the cylindrical body 221 and detachably connected to the open end of the tubular body 21. The cylindrical body 221 is disposed inside the tubular body 21, and a gap for gas flow is left between the cylindrical body 221 and the tubular body 21. The cylindrical body 221 is provided with a slow-release channel 223, which penetrates the cylindrical body 221 and is used to guide the pheromones inside the tubular body 21 to the outside of the decoy plug 2. Specifically, the slow-release channel 223 includes a first slow-release channel 2231 with a larger opening at one end and a second slow-release channel 2232 with a smaller opening at the other end. The opening of the first slow-release channel 2231 inside the tubular body 21 is smaller than the opening at the other end, and the opening of the second slow-release channel 2232 inside the tubular body 21 is larger than the opening at the other end. The first slow-release channel 2231 is located in the middle of the columnar body 221, and the second slow-release channels 2232 are spaced apart along the outer periphery of the first slow-release channel 2231, with the number of second slow-release channels 2232 exceeding the number of first slow-release channels 2231. In use, insect pheromones are mainly released from the first slow-release channel 2231; the design of the larger inner opening and smaller outer opening prolongs the slow-release time.

[0029] like Figure 4As shown, the inner wall of the tubular body 21 is concave-convex. The inner wall of the tubular body 21 near the open end of the detonator plug 2 has a concave connecting portion 211, and the opening edge of the tubular body 21 below the connecting portion 211 has an inwardly protruding flange 212. The connecting portion 211 is sized to match the locking portion 222 of the slow-release plug 22, and the edge of the end of the slow-release plug 22 below the locking portion 222 is a groove matching the flange 212. The tubular body 21 of the detonator plug 2 is a hollow frustum shape, and the diameter of the closed end is smaller than the diameter of the open end. This facilitates the insertion of the detonator plug 2 into the insertion hole 111, and also ensures that after the detonator plug 2 is inserted into the insertion hole 111 of the tray 1, the outer wall of the detonator plug 2 fits against the inner wall of the insertion hole 111, and the opening of the detonator plug 2 is flush with the bottom plate 11 of the tray 1.

[0030] When preparing the lure, simply attach the agent to the inner wall of the tubular body 21, insert the tubular body 21 into the insertion hole 111, ensuring the outer wall of the tubular body 21 fits against the inner wall of the insertion hole 111, and the opening of the tubular body 21 is flush with the bottom plate 11 of the tray 1. Then, perform a first soaking and a second soaking with the agent. After the tubular body 21 is properly coated with the agent, the lure plug 2 is fitted on top, and then it is sealed in a packaging bag. In field use, the tubular body 21 of the lure plug 2 is fixed to the trap, and the insect pheromone attached to the tubular body 21 attracts and kills male insects. The use of the slow-release plug 22 can extend the service life of the lure, allowing for the trapping of two generations of stem borers with a single use, basically meeting the needs of a single crop season. This eliminates the need for frequent replacement of the insect pheromone lure preparation method, saving labor.

[0031] In summary, the invention utilizes a porous aluminum tray 1 for lure preparation. First, lure plugs 2 are inserted into the holes 111 of the tray 1, ensuring the openings of the plugs 2 are roughly flush with the bottom plate 11 of the tray 1. Then, insect pheromones are dissolved in petroleum ether and poured into the tray 1 filled with plugs 2. As the petroleum ether evaporates, the insect pheromones penetrate the inner wall of the plugs 2. This method can simultaneously attach insect pheromones to multiple (hundreds) of plugs 2, ensuring all pheromones adhere to the inner wall of the plugs 2. This improves lure preparation efficiency and reduces pheromone waste. The insect pheromones are applied in two stages: the first with petroleum ether with a distillation range of 30–60°C, and the second with petroleum ether with a distillation range of 60–90°C. This allows the pheromones to penetrate to different depths in the plugs 2, increasing the pheromone loading and extending the lure's lifespan.

[0032] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A method for preparing an insect pheromone lure, characterized in that, The steps include the following: (1) Prepare a tray with sockets, fill the sockets of the tray with the wick plugs, and set it aside for use; The pallet includes a base plate, side plates, and support legs. The base plate is provided with the insertion holes at intervals. The side plates are fixed around the base plate. The support legs are fixed below the base plate to support the base plate. The core plug includes a tubular body that is closed at one end and open at the other end, and the inner wall of the tubular body is irregular. After the decoy plug is inserted into the insertion hole of the tray, the outer wall of the decoy plug fits against the inner wall of the insertion hole, and the opening of the decoy plug faces upward and is flush with the bottom plate of the tray. (2) Dissolve the insect sex attractant in petroleum ether with a distillation range of 30-60°C and stir until homogeneous to obtain the first mixture. Then pour the first mixture into a tray filled with lure plugs. After the petroleum ether with a distillation range of 30-60°C in the first mixture has dried, proceed to the next preparation step. In this step, the mass ratio of insect sex pheromone to petroleum ether with a distillation range of 30-60℃ is 1-2:500-1500; (3) Dissolve the insect sex attractant in petroleum ether with a distillation range of 60-90℃ and stir evenly to obtain a second mixture. Then pour the second mixture into a tray filled with lure plugs and loaded with the first mixture. After the petroleum ether with a distillation range of 60-90℃ in the second mixture has dried, it can be packaged for later use. In this step, the mass ratio of insect pheromone to petroleum ether with a distillation range of 60–90°C is 1–2:500–1500.

2. The method for preparing insect pheromone lures according to claim 1, characterized in that, The decoy plug also includes a slow-release plug, which includes a cylindrical body and a snap-fit ​​part. The snap-fit ​​part is fixed to one end of the cylindrical body and detachably connected to the open end of the tubular body. The cylindrical body is disposed within the tubular body, and a gap for gas flow is left between the cylindrical body and the tubular body. The cylindrical body is provided with a slow-release channel that penetrates the cylindrical body and is used to guide the pheromones inside the tubular body to the outside of the decoy plug.

3. The method for preparing insect pheromone lures according to claim 2, characterized in that, The sustained-release channel includes a first sustained-release channel with a large opening at one end and a second sustained-release channel with a small opening at the other end. The opening of the first sustained-release channel inside the tubular body is smaller than the opening at the other end, and the opening of the second sustained-release channel inside the tubular body is larger than the opening at the other end.

4. The method for preparing insect pheromone lures according to claim 3, characterized in that, The first sustained-release channel is located in the middle of the columnar body, and the second sustained-release channel is arranged at intervals along the outer periphery of the first sustained-release channel.

5. The method for preparing insect pheromone lures according to claim 2, characterized in that, The tubular body of the detonator has a recessed connecting portion on the inner wall near the opening end, and a raised edge protruding inward at the opening edge of the tubular body below the connecting portion; the connecting portion is adapted to the size of the locking portion of the slow-release plug, and the edge of the end of the slow-release plug below the locking portion is a groove that matches the raised edge.

6. The method for preparing an insect pheromone lure according to claim 1, characterized in that, The tubular body of the core plug is a hollow frustum shape, and the diameter of the closed end is smaller than the diameter of the open end.

7. The method for preparing insect pheromone lures according to claim 1, characterized in that, The decoy plug is made of rubber.

8. The method for preparing insect pheromone lures according to claim 1, characterized in that, The tray is an aluminum tray.

9. The method for preparing an insect pheromone lure according to claim 1, characterized in that, In steps (2) and (3), the first mixture and the second mixture respectively cover the bottom plate of the tray by 1-2 cm.

10. The method for preparing an insect pheromone lure according to claim 1, characterized in that, The insect sex pheromone is specifically a sex pheromone for the sugarcane two-spotted stem borer.

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