A noctuid food attractant and trapping device

Abstract

The invention discloses a food attractant and a trapping device for noctuid moths. The food attractant comprises: 1-10 parts of myricene, 1-10 parts of alpha-pinene, 1-20 parts of sucralose, 1-20 parts of methyl salicylate, 1-25 parts of geraniol, 5-20 parts of corn pollen and 20-40 parts of agar. The preparation method of the food attractant comprises: firstly adding sucralose, corn pollen and agar into water for heating and dissolving to prepare solution A; simultaneously dissolving myricene, alpha-pinene, methyl salicylate and geraniol in n-hexane to prepare solution B; then mixing solutions A and B, and accelerating the dissolution by ultrasonic dissolution method; and obtaining the solid food attractant after cooling and solidification. The present invention combines a black light, a food attractant and an electric shock net, so that insects can be electrocuted to death without eating the food attractant. Therefore, the food attractant and the killing device of the present invention can kill insects without using pesticides, thereby reducing harm to humans and the environment. The use is convenient and simple, reduces losses, saves costs, and can be widely used.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural insect control, in particular to a noctuid food attractant and a trapping and killing device. Background Art

[0002] Noctuid pests are major pests of crops with a wide host range, including corn, rice, wheat, sorghum, melons and vegetables and other economic food crops, posing a serious threat to my country's grain production.

[0003] In order to control this type of pest, farmers often use pesticides for chemical control, but long-term use of pesticides is likely to cause the "3R" problem, namely: pesticide residues, rampant pests, and resistance. Therefore, there is an urgent need for a long-term, safe and effective method to control this type of pest. The use of attractants to control this type of pest has been recognized in certain specific species, and has the advantages of being green, environmentally friendly, and highly effective. However, current attractants only control a single species and may be affected by environmental conditions such as temperature and humidity. In order to ensure that the attraction effect can be maintained under different environmental conditions, continuous research and development and innovation are required to adapt to the ever-changing pest behavior and resistance patterns.

[0004] After searching, the Chinese invention patent with publication number CN107182971B discloses a moth insect trapping device, including a trap body, an electrical box, a high-voltage electric column array and a counting sensor; the electrical box provides high voltage electricity to the high-voltage electric column array; the high-voltage electric column array can be accommodated in a cavity at the upper part of the trap body; a plurality of diamond-shaped insect entrances are opened on the side wall of the trap body; the diamond-shaped insect entrances shrink toward the inside of the trap body to form a trumpet-shaped contraction; a funnel-shaped insect collecting outlet is opened at the bottom of the trap body; the counting sensor is arranged on the inner side of the lower part of the funnel-shaped insect collecting outlet; and a sex pheromone or chemical reagent for attracting insects is arranged in the center of the high-voltage electric column array. This application uses chemicals to induce insects to enter the device and kills them with electric shock. However, external airflow and rain may cause the concentration of the attractant to decrease or spread unevenly, thereby affecting the insects' olfactory perception of the attractant. Therefore, it is difficult to ensure its attraction effect on insects by relying solely on the free volatilization of the attractant, and it is also impossible to guarantee the device's ability to attract and kill insects. Summary of the invention

[0005] In view of the above-mentioned prior art, the present invention provides a noctuid food attractant and a trapping and killing device, and the main technical problem to be solved is how to ensure the trapping and killing effect on insects.

[0006] To achieve the above object, the technical solution of the embodiment of the present invention is implemented as follows:

[0007] A food attractant for noctuid moths, comprising the following raw materials in parts by weight: 1-10 parts of myrcene, 1-10 parts of α-pinene, 1-20 parts of sucralose, 1-20 parts of methyl salicylate, 1-25 parts of geraniol, 5-20 parts of corn pollen, and 20-40 parts of agar;

[0008] The preparation method of the food attractant includes: firstly adding sucralose, corn pollen and agar into water and heating and dissolving them to prepare solution A; at the same time, dissolving myrcene, α-pinene, methyl salicylate and geraniol in n-hexane to prepare solution B; then mixing solutions A and B, and accelerating the dissolution by ultrasonic dissolution method; and obtaining a solid food attractant after cooling and solidification.

[0009] Furthermore, the following raw materials are included in parts by weight: 1-5 parts of myrcene, 1-5 parts of α-pinene, 1-10 parts of sucralose, 1-10 parts of methyl salicylate, 1-15 parts of geraniol, 5-15 parts of corn pollen, and 25-35 parts of agar.

[0010] Furthermore, the following raw materials are included in parts by weight: 1 part of myrcene, 2 parts of α-pinene, 5 parts of sucralose, 5 parts of methyl salicylate, 6 parts of geraniol, 10 parts of corn pollen, and 30 parts of agar.

[0011] Furthermore, the liquid ratio of corn pollen to water is 1:10-15 g / mL, the liquid ratio of myrcene to n-hexane is 1:5-8 g / mL, the ultrasonic power of ultrasonic dissolution is 20-40 kHz, the heating temperature is 40-60° C., and the time is 1-2 h.

[0012] A noctuid trapping device comprises a trapping plate, an electric shock net and a black light tube. The trapping plate comprises a connecting ring and a base. The base is provided with an attractant box, a fan blade and a driving mechanism. The attractant box is used to contain food attractants. The driving mechanism comprises a rotating assembly and a lifting assembly. The rotating assembly is used to drive the attractant box and the fan blade to rotate. The lifting assembly is used to drive the attractant box to rise and fall. The attractant box rolls the food attractant by rotating and rising. The fan blade promotes the volatilization of the food attractant by creating airflow.

[0013] Furthermore, the electric shock net is fixedly connected to the top of the connecting ring, and the top of the electric shock net is fixedly connected to a lamp holder, a plurality of hook ropes are fixedly connected to the outside of the top of the lamp holder at equal intervals, the tops of the plurality of hook ropes are fixedly connected to the same hook, the black light tube is fixedly connected to the bottom of the lamp holder, the diameter of the lamp holder is larger than the diameter of the trapping plate, the connecting ring is threadedly connected to the outside of the base, the top and bottom of the base are provided with circular through holes, the rotating assembly includes a rotating rod, the rotating rod is rotatably connected to the base at two circular through holes, and the fan blades are fixedly connected to the top of the rotating rod.

[0014] Furthermore, a plurality of rotating shafts are equidistantly connected to the outer side of the inner wall at the bottom end of the base for rotation, a sleeve is sleeved on the outer side of the top end of the rotating shaft, a plurality of circular openings are equidistantly provided on the outer side of the top end of the base, the top end of the sleeve extends to the outside of the base at the circular opening, the attractant box is fixedly connected to the top end of the sleeve, the lifting assembly includes a slider, the slider is fixedly connected to the inner wall of the top end of the base at one side of the sleeve, an elliptical slide groove is provided on the outer side of the sleeve, the slider is slidably connected to the sleeve at the slide groove, a guide rail is fixedly connected to the outer side of the rotating shaft, a guide groove is provided on the inner side of the sleeve, and the guide rail is slidably connected to the sleeve at the guide groove.

[0015] Furthermore, the outside of the rod body of the rotating rod in the base is connected to a driving wheel through a key, the outside of the rod body of the rotating shaft is connected to a driven wheel through a key, the driving wheel is meshed with the driven wheel, and the diameter of the driving wheel is smaller than the diameter of the driven wheel, the bottom end of the base is fixedly connected to a casing at the outside of the rotating rod, the inside of the casing is fixedly connected to a motor, the top end of the output shaft of the motor is fixedly connected to the rotating rod, the bottom ends of both sides of the base are fixedly connected to connecting plates, and handles are fixedly connected between the two connecting plates and the casing.

[0016] Furthermore, a discharge port is provided on one side of the attractant box, and a cover plate is rotatably connected to the inner wall of the attractant box at the discharge port, a torsion spring is fixedly connected between the cover plate and the attractant box, and the area of ​​the cover plate is larger than the area of ​​the discharge port, and a plurality of air holes for volatilization of food attractants are provided on the attractant box and the cover plate.

[0017] Furthermore, the attractant tray is provided with an attractant dynamic release system, which includes:

[0018] Photoresistor, used to monitor light intensity as a basis for adjusting the frequency of releasing food attractants;

[0019] High-speed cameras and ultrasonic sensors to detect the approach of insects as a signal to activate the motor;

[0020] Relay, used to control the start and stop of the motor to enhance the effect of releasing food attractants;

[0021] The microcontroller is used to read the analog signal of the photoresistor, convert it into a light intensity value, calculate the release frequency according to the light intensity value, and then control the machine relay according to the calculation result.

[0022] The beneficial effects of the present invention are:

[0023] 1. When the trapping device of the present invention uses food attractants to attract insects, the rotation of the fan blades can speed up the flow rate of the air outside the food attractants, and the rotation and lifting of the attractant box can cause the food attractants to roll, so that the food attractants are in more sufficient contact with the airflow, thereby improving the volatilization effect of the food attractants, ensuring that the odor emitted by the food attractants has a more sufficient concentration and diffusion range, thereby improving the insect attracting effect and enhancing the insect attracting and killing effect; in addition, the characteristics of the lamp holder and the attracting plate being larger at the top and smaller at the bottom can play a rainproof effect, and the rotation and lifting of the attractant box can also remove the water vapor inside it, so that the food attractants can be prevented from being damp and affecting the volatilization and shelf life;

[0024] 2. The food attractant of the present invention is composed of a combination of various plant volatile smells that are favored by noctuid insects. It is attractive to various noctuid insects such as fall armyworm, corn armyworm, armyworm, Spodoptera litura, tobacco budworm, and other pests such as two-spotted firefly leaf beetle, corn borer, strong-clawed gall midge, aphids, and thrips, breaking the singleness of traditional attractant cores; the food attractant is made of agar to be solid, has the characteristics of moisture resistance, can volatilize chronically for a long time, and reduces the number of replacement times of the attractant core;

[0025] 3. The present invention combines a black light, food attractants and an electric shock net, so that insects can be electrocuted to death without eating the food attractants. Therefore, the food attractants and the killing device of the present invention can kill insects without using pesticides, thereby reducing harm to humans and the environment, having a good environmental effect, and being of great benefit to the sustainable development of agriculture. In addition, the device is easy and simple to use, reduces losses, saves costs, and can be widely used. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A stereoscopic diagram of a noctuid trapping device in the present application;

[0027] Figure 2 An exploded view of a trap tray of a noctuid moth-killing device in the present application;

[0028] Figure 3 It is a front cross-sectional view of a base of a noctuid trapping device in the present application;

[0029] Figure 4 A three-dimensional diagram of a sleeve of a noctuid moth trapping device in the present application;

[0030] Figure 5 The present invention is a top cross-sectional view of an attractant box of a noctuid trapping device in the present application.

[0031] Description of Figure Numbers:

[0032] The bait plate 1, the connecting ring 101, the base 102, the electric shock net 2, the black light tube 3, the lamp holder 4, the hook rope 5, the hook 6, the bait box 7, the connecting piece 8, the handle 9, the casing 10, the motor 11, the driving wheel 12, the rotating shaft 13, the driven wheel 14, the slider 15, the sleeve 16, the slide groove 1601, the rotating rod 17, the fan blade 18, the torsion spring 19, and the cover plate 20. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further elaborated in detail below in conjunction with the drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. In the following description, the expression "some embodiments" is related to a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0034] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0035] Example 1

[0036] The noctuid food attractant of this embodiment includes the following raw materials in parts by weight: 1 part of myrcene, 2 parts of α-pinene, 5 parts of sucralose, 5 parts of methyl salicylate, 6 parts of geraniol, 10 parts of corn pollen, and 30 parts of agar;

[0037] The preparation method of the above-mentioned food attractant includes: adding sucralose, corn pollen and agar to water according to a solid-liquid ratio of 1:13g / mL, heating to 50°C to dissolve to prepare solution A; dissolving myricene, α-pinene, methyl salicylate and geraniol in n-hexane to prepare solution B, and the solid-liquid ratio of myricene to n-hexane is 1:7g / mL; then mixing solutions A and B, ultrasonically treating at 30kHz, 40-60°C for 1.5h to accelerate dissolution, and obtaining a solid food attractant after cooling and solidification.

[0038] Example 2

[0039] The noctuid food attractant of this embodiment includes the following raw materials in parts by weight: 1 part of myrcene, 1 part of α-pinene, 1 part of sucralose, 1 part of methyl salicylate, 1 part of geraniol, 5 parts of corn pollen, and 25 parts of agar;

[0040] The preparation method of the above-mentioned food attractant includes: adding sucralose, corn pollen and agar into water at a solid-liquid ratio of 1:10 g / mL, heating and dissolving at 40°C to prepare solution A; dissolving myricene, α-pinene, methyl salicylate and geraniol in n-hexane to prepare solution B, and the solid-liquid ratio of myricene to n-hexane is 1:5 g / mL; then mixing solutions A and B, ultrasonically treating at 20 kHz and 40°C for 1 hour to accelerate dissolution, and obtaining a solid food attractant after cooling and solidification.

[0041] Example 3

[0042] The noctuid food attractant of this embodiment includes the following raw materials in parts by weight: 5 parts of myrcene, 5 parts of α-pinene, 10 parts of sucralose, 10 parts of methyl salicylate, 15 parts of geraniol, 15 parts of corn pollen, and 35 parts of agar;

[0043] The preparation method of the above-mentioned food attractant includes: adding sucralose, corn pollen and agar to water according to a solid-liquid ratio of 1:15g / mL, heating at 60°C to dissolve to prepare solution A; dissolving myricene, α-pinene, methyl salicylate and geraniol in n-hexane to prepare solution B, and the solid-liquid ratio of myricene to n-hexane is 1:8g / mL; then mixing solutions A and B, ultrasonically treating at 40kHz and 60°C for 2h to accelerate dissolution, and obtaining a solid food attractant after cooling and solidification.

[0044] Comparative Example 1

[0045] The difference from Example 1 is that the amount of raw materials is different, and the rest is consistent with Example 1.

[0046] That is, the noctuid food attractant of this comparative example includes the following raw materials in parts by weight: 11 parts of myrcene, 0.8 parts of α-pinene, 21 parts of sucralose, 25 parts of methyl salicylate, 30 parts of geraniol, 22 parts of corn pollen, and 18 parts of agar.

[0047] Comparative Example 2

[0048] The difference from Example 1 is that the raw material lacks myrcene, and the rest is consistent with Example 1.

[0049] Comparative Example 3

[0050] The difference from Example 1 is that the raw material lacks α-pinene, and the rest is consistent with Example 1.

[0051] Comparative Example 4

[0052] The difference from Example 1 is that the raw material lacks geraniol, and the rest is the same as Example 1.

[0053] Test Example 1

[0054] The food attractants prepared in Examples 1-3 and Comparative Examples 1-4 and the existing attractant cores were placed in the trapping device to conduct an insect attraction test. A high-speed camera was used to record the video, which was then counted by manual viewing to calculate the number of noctuid pests attracted in one week.

[0055] The results are shown in Table 1.

[0056] Table 1

[0057]

[0058] As can be seen from Table 1, the food attractants prepared in Examples 1-3 of the present invention are much better than the existing attractants in attracting noctuid pests. Compared with Example 1, the raw material formulas of Comparative Examples 1-4 are different or lack a certain component, and the effects of the food attractants prepared are reduced to varying degrees.

[0059] Test Example 2

[0060] Experimental grouping: Select contiguous farmland with uniform growth and consistent management as the experimental area, and set up three experimental groups repeatedly;

[0061] Group A: this trap + this food attractant;

[0062] Group B: existing trap + this food attractant;

[0063] Group C: existing traps + existing bait cores;

[0064] Experimental process: The distance between each two trapping experimental devices is not less than 25 meters. After setting, the number of traps killed by the above four trapping experimental devices is recorded in units of weeks. The trapping counting process of the trapping experimental devices is recorded by a high-speed camera, and then counted by manual viewing, and recorded for a total of 8 weeks. After each statistics of the number of traps killed, the counted insect corpses are removed, and the weekly trapping success rate is calculated, where the trapping success rate = (number of lured noctuid pests - number of surviving noctuid pests) / number of lured noctuid pests.

[0065] The success rate of trapping is shown in Table 2.

[0066] Table 2

[0067]

[0068] It can be seen from the data in Table 2 that the trapping device and food attractant of the present invention have significantly improved effects on trapping noctuid insects, especially when the trapping device of the present invention is used in combination with the food attractant, it has the best trapping effect, and is attractive to a variety of noctuid insects such as the fall armyworm, corn armyworm, armyworm, Spodoptera litura, tobacco budworm, as well as other pests such as the two-spotted firefly leaf beetle, corn borer, strong-clawed gall midge, aphids and thrips.

[0069] Example 4

[0070] See attached Figure 1-5 The present application provides a noctuid trapping device, comprising an attracting plate 1, an electric shock net 2 and a black light tube 3. The output voltage of the electric shock net 2 is 2500V. It is made of a stainless steel vertical net with a vertical wire diameter of 3mm and a mesh wire spacing of 5mm. The black light tube 3 is a black light lamp with an alternating current of 25W, which can emit long-wave ultraviolet rays with a wavelength of 330-400nm to attract nocturnal pests, so as to achieve phototaxis at night. The attracting plate 1 comprises a connecting ring 101 and a base 102. The base 102 is provided with an attractant box 7, a fan blade 18 and a driving mechanism. The attractant box 7 is used to hold food attractants. The driving mechanism comprises a rotating component and a lifting component. The rotating component is used to drive the attractant box 7 and the fan blade 18 to rotate. The lifting component is used to drive the attractant box 7 to rise and fall. The attractant box 7 rolls the food attractant by rotating and lifting. The fan blade 18 promotes the volatilization of the food attractant by creating airflow.

[0071] When the device is used at night, the black light tube 3 can be turned on to emit a wavelength of 330-400nm to attract field moths. In addition, the attractant core emits the smell of complex volatile substances, which makes the moths fly to the trapping device and contact the electric shock net 2 to be electrocuted and killed, thereby playing a role in night prevention and control.

[0072] Preferably, the electric shock net 2 is fixedly connected to the top of the connecting ring 101, and the top of the electric shock net 2 is fixedly connected with a lamp holder 4. The attracting plate 1 and the lamp holder 4 are made of green waterproof and rainproof materials, so they can play a rainproof effect and reduce the damage to the food attractant by extreme weather. A number of hook ropes 5 are fixedly connected to the outside of the top of the lamp holder 4 at equal intervals, and the tops of the several hook ropes 5 are fixedly connected with the same hook 6. The hook rope 5 and the hook 6 are made of green painted stainless steel. The color coating on the surface of the attracting plate 1, the lamp holder 4, the hook rope 5 and the hook 6 can visually simulate the color of crop leaves, thereby attracting insects by color during the day. The black light tube 3 is fixedly connected to the bottom end of the lamp holder 4, and the diameter of the lamp holder 4 is larger than the diameter of the attracting plate 1; the bottom ends of both sides of the base 102 are fixedly connected with connecting pieces 8. The connecting pieces 8 can limit the former when the base 102 is installed on the connecting ring 101, ensuring that the degree of threaded connection between the two is always consistent, and handles 9 are fixedly connected between the two connecting pieces 8 and the casing 10.

[0073] When the trap is used, the device can be mounted in a farmland using the hook rope 5 and the hook 6 , and then the base 102 can be driven to rotate by twisting the handle 9 , so as to be removed from the connecting ring 101 .

[0074] Preferably, a discharge port is provided on one side of the lure box 7, and a cover plate 20 is rotatably connected to the inner wall of the lure box 7 at the discharge port, and a torsion spring 19 is fixedly connected between the cover plate 20 and the lure box 7. The elastic force of the torsion spring 19 can maintain the cover plate 20 in a state of always closing the discharge port. A sealing gasket is provided at the edge of the side where the cover plate 20 contacts the inner wall of the lure box 7, so that the sealing degree between the cover plate 20 and the lure box 7 can be ensured to avoid a gap between the two and cause leakage of food lure, and when the lure box 7 rotates and During the lifting and lowering process, the centrifugal force of the rotation of the attractant box 7 can further ensure that the cover 20 fits with its inner wall, so it can effectively prevent the food attractant from leaking during the tumbling process. The area of ​​the cover 20 is larger than the area of ​​the discharge port. The attractant box 7 and the cover 20 are both provided with a number of pores for the volatilization of the food attractant. The pores can not only ensure that the food attractant can volatilize the odor to attract insects, but also when the attractant box 7 rotates, it can also easily discharge water vapor to avoid the accumulation of water vapor inside and causing the food attractant to get damp.

[0075] Then, after pushing the cover plate 20 inward, the food attractant can be put into the attractant box 7, and then the cover plate 20 can be loosened, and the elastic force of the torsion spring 19 can be used to make the cover plate 20 close the attractant box 7 again.

[0076] Preferably, the connecting ring 101 is threadedly connected to the outside of the base 102, and circular through holes are opened at the top and bottom ends of the base 102. The rotating assembly includes a rotating rod 17, which is rotatably connected to the base 102 at two circular through holes, and the fan blades 18 are fixedly connected to the top of the rotating rod 17.

[0077] After the food attractant is loaded into the attractant box 7, the base 102 can be reinstalled on the connecting ring 101 and the motor 11 can be started. The motor 11 can drive the fan blades 18 and the driving wheel 12 to rotate through the rotating rod 17. The rotation of the fan blades 18 can generate airflow to accelerate the flow rate of the airflow outside the attractant box 7 to improve the volatilization effect of the food attractant.

[0078] Preferably, the outer side of the inner wall at the bottom of the base 102 is rotatably connected with a plurality of rotating shafts 13 at equal intervals, a sleeve 16 is sleeved on the outer side of the top of the rotating shaft 13, a plurality of circular openings are equidistantly opened on the outer side of the top of the base 102, the top of the sleeve 16 extends to the outside of the base 102 at the circular opening, the attractant box 7 is fixedly connected to the top of the sleeve 16, and the lifting assembly includes a slider 15, the slider 15 is fixedly connected to the inner wall of the top of the base 102 at one side of the sleeve 16, and the outer side of the sleeve 16 is opened. There is an elliptical slide groove 1601, and the slider 15 is slidably connected to the sleeve 16 at the slide groove 1601. The length of the sleeve 16 should be smaller than the distance between the fan blade 18 and the base 102, so as to ensure that the lifting of the attractant box 7 will not touch the fan blade 18. The outer side of the rotating shaft 13 is fixedly connected with a guide rail 1301, and the inner side of the sleeve 16 is provided with a guide groove. The guide rail 1301 is slidably connected to the sleeve 16 at the guide groove. The sliding connection between the two can maintain the smoothness of the lifting and lowering movement of the sleeve 16 during the rotation process. The outside of the rod body of the rotating rod 17 in the base 102 is connected to the driving wheel 12 through a key, and the outside of the rod body of the rotating shaft 13 is connected to the driven wheel 14 through a key. The driving wheel 12 is meshed with the driven wheel 14, and the diameter of the driving wheel 12 is smaller than the diameter of the driven wheel 14. The bottom end of the base 102 is fixedly connected to the shell 10 at the outside of the rotating rod 17, and the inside of the shell 10 is fixedly connected to the motor 11, and the top end of the output shaft of the motor 11 is fixedly connected to the rotating rod 17.

[0079] At the same time, the driving wheel 12 can drive the rotating shaft 13 to rotate through the driven wheel 14, and the rotating shaft 13 can drive the attractant box 7 to rotate through the sleeve 16. In the process of rotation of the sleeve 16, the sleeve 16 can also drive the attractant box 7 to produce a lifting movement under the action of the slider 15 and the slide groove 1601. Therefore, the food attractant can tumble in the attractant box 7, so it can fully contact with the above-mentioned airflow, and further ensure the volatilization of the food attractant, so that the smell it emits can have a more sufficient concentration and range. In this case, the insect attracting effect can be guaranteed, and the insect attracting and killing effect of the electric shock net 2 can be enhanced.

[0080] In the subsequent use of the device, if the food attractant needs to be replaced, the power of the device can be turned off first, so that the electric shock net 2, the black light tube 3 and the motor 11 are all in a power-off state, and then the base 102 can be disassembled by the handle 9 to remove the attractant box 7. After that, new food attractant can be loaded into it, and the base 102 can be reinstalled on the connecting ring 101 to ensure the device's attraction effect on insects.

[0081] In addition, a solar panel can be set on the lamp holder 4 of the device, and a power storage module can be set inside it to achieve self-powering of the motor 11, black light lamp 3 and electric shock net 2, thereby reducing operating costs and facilitating use in remote areas such as outdoor farmland.

[0082] Example 5

[0083] The attractant plate 1 is provided with an attractant dynamic release system, which includes:

[0084] The photoresistor is used to monitor the light intensity as the basis for adjusting the frequency of releasing the food attractant. Its model is GL5528, which has good linearity and sensitivity. It is installed on the top of the lamp holder 4 and can monitor the external light intensity value to determine whether the external environment belongs to the time period when noctuid insects appear. For example, the light intensity range of about 0lux-100lux is set as night, and the light intensity range of about 200lux-100,000lux is set as daytime. The value between the two ranges is dawn or dusk. In this way, the motor 11 is started in the time period when noctuid insects often appear, so as to achieve the effect of increasing the volatilization effect of the food attractant and expanding its diffusion range in the appropriate time period. In the time period when noctuid insects do not like to appear, the food attractant can be allowed to volatilize by itself to maintain the basic trapping effect of the device;

[0085] The high-speed camera and ultrasonic sensor are used to monitor the approach of insects and serve as a signal to start the motor 11. The model of the high-speed camera is MiroLAB320, and the model of the ultrasonic sensor is MaxsonarEZ0 ultrasonic module MB1200. Both can monitor whether there are insects approaching near the device, and send out signals to increase the volatilization of the food attractant when there are insects approaching, so as to enhance the luring effect on the insects, thereby ensuring the trapping and killing effect of the device on the insects;

[0086] The relay is used to control the start and stop of the motor 11 to enhance the effect of releasing the food attractant. A small relay with a photoelectric isolation function of 5V and 10A can be used. When the photoresistor determines that the external environment is dark, the microcontroller can be used to control the motor 11 to run for 10 seconds every 20 seconds. When the photoresistor determines that the external environment is daytime, the relay controls the motor 11 to run for 5 seconds every 40-60 seconds. In this way, the food attractant is used reasonably to ensure that the enhanced volatilization effect provided by the motor 11 does not lead to excessive waste of the food attractant.

[0087] The microcontroller is used to read the analog signal of the photoresistor, convert it into the light intensity value, calculate the release frequency according to the light intensity value, and then control the mechanical relay according to the calculation result. The microcontroller can be Arduino nano, which is relatively small and more suitable for field deployment. In addition, ESP32 can also be selected, which has Wi-Fi function, which can facilitate remote monitoring and data collection;

[0088] Before deploying this device, the light intensity range of the photoresistor and the darkThreshold value of the high-speed camera should be calibrated according to the actual ambient light conditions. Then, the ultrasonic sensor can be used to more accurately monitor the activities of noctuid insects to optimize the attractant release strategy. Using ESP32, remote monitoring and data transmission can be carried out via Wi-Fi when necessary. Using PID control, the attractant release frequency can be adaptively adjusted according to historical data and real-time environmental information.

[0089] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. The protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A food attractant for noctuid moths, characterized in that: The raw materials include the following in parts by weight: 1-10 parts of myrcene, 1-10 parts of α-pinene, 1-20 parts of sucralose, 1-20 parts of methyl salicylate, 1-25 parts of geraniol, 5-20 parts of corn pollen, and 20-40 parts of agar; The preparation method of the food attractant comprises: firstly, adding sucralose, corn pollen and agar into water and heating and dissolving them to prepare solution A; simultaneously, dissolving myrcene, α-pinene, methyl salicylate and geraniol in n-hexane to prepare solution B; then, mixing solutions A and B, and accelerating the dissolution by ultrasonic dissolution method; and obtaining a solid food attractant after cooling and solidification.

2. A noctuid food attractant according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 1-5 parts of myrcene, 1-5 parts of α-pinene, 1-10 parts of sucralose, 1-10 parts of methyl salicylate, 1-15 parts of geraniol, 5-15 parts of corn pollen and 25-35 parts of agar.

3. A noctuid food attractant according to claim 2, characterized in that: The invention comprises the following raw materials in parts by weight: 1 part of myrcene, 2 parts of α-pinene, 5 parts of sucralose, 5 parts of methyl salicylate, 6 parts of geraniol, 10 parts of corn pollen and 30 parts of agar.

4. A noctuid food attractant according to claim 1, characterized in that: The material-liquid ratio of the corn pollen to water is 1:10-15 g / mL, the material-liquid ratio of the myrcene to n-hexane is 1:5-8 g / mL, the ultrasonic power of the ultrasonic dissolution method is 20-40 kHz, the heating temperature is 40-60° C., and the time is 1-2 h.

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