A grain bulk pest trapping assembly, trap and method of trapping book lice pests

Abstract

The application discloses a grain heap pest trapping assembly, a trap and a book louse trapping method, relates to the field of stored grain pest trapping, and discloses the grain heap pest trapping assembly which comprises a trapping cylinder and a pesticide chamber arranged below the trapping cylinder. The cylinder wall of the trapping cylinder is densely provided with trapping holes. The pesticide chamber comprises a cup body and a shell arranged outside the cup body. The cup opening of the cup body is communicated with the inner cavity of the trapping cylinder. A gap is arranged between the cup wall of the cup body and the inner wall of the shell. The cup wall of the cup body is provided with a through hole communicated with the gap. The book louse is trapped by adding diatomite into the cup body and adding an attractant into the shell. The book louse can be efficiently trapped and killed. The diatomite can dry the dead bodies of the pests. Meanwhile, the dry environment in the cup can facilitate the cleaning work after the trapping is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of grain storage pests trapping, in particular to a grain pile pest trapping assembly, a trap and a book louse pest trapping method. BACKGROUND

[0002] During the process of grain storage, the occurrence of grain storage pests will cause problems in quality and consumption of grain, so it is necessary to prevent and control grain storage pests.

[0003] Book louse pests are the most representative pests in grain storage in China. The harm of book louse pests to grain in grain storage can be summarized as follows: ① Book louse pests will affect the quality of grain during feeding; ② When book louse pests are seriously harmed, a large amount of harmful substances such as carcasses, feces and exuviae will be produced, which will affect the food safety of stored grain; ③ The protozoa of book louse pests can carry and transmit some highly pathogenic organisms, and some can also transmit bacteria. For example, Liposcelis bostrychophila is regarded as a potential human allergen, which can cause quite strong skin reactions to people with allergic constitution; in addition, they can also use their feces, carcasses and exuviae to carry pathogenic bacteria, causing people to be infected with dermatitis and asthma and other diseases; ④ Book louse pests are more likely to appear in the humid part of the grain pile during storage, and the aggregation of book louse pests will further cause the moisture of stored grain to increase, which is also easy to cause the temperature to rise and mold to heat.

[0004] Book louse pests prefer high temperature and high humidity environments. Within a certain high temperature range, the development period of book louse will be shortened with the rise of temperature. Studies have shown that Liposcelis bostrychophila and Liposcelis entomophila grow and develop fastest under 70%-80% RH conditions.

[0005] The unique body surface fat composition of book louse pests is closely related to their corresponding immune function, which makes them have super strong adaptability to stored grain. For example, book louse pests have strong starvation resistance. Liposcelis bostrychophila can survive for 27 days without feeding, and starvation will not affect their egg-laying capacity under suitable temperature and humidity conditions. At the same time, the water content in the body of book louse pests accounts for about 66% of the total weight. Since the body wall of book louse pests is relatively thin, their ability to withstand dryness is weaker than that of other beetle pests. However, if the water content in their body is lower than 66%, they will actively absorb water from the atmosphere with a humidity of 60% to maintain their water balance, which is a unique ability of book louse pests.

[0006] ​Currently, the main methods for controlling book lice are biological control, chemical control and physical control. Biological control is a method of using natural enemies of pests to control pests. For example, book lice have a restraining relationship with other arthropods. It has been reported that Pseudoscorpionida can prey on book lice (Sidik, 1985). In the absence of fumigation treatment, the presence of red and flat grain beetles can inhibit the development of book lice populations (Rennis, 1998). When Oligonychus ununguis and Oligonychus perseae are cultured with red beetles in the same space, the red beetles will prey on each stage of book lice. However, these arthropods are also harmful to grain, so this control method is not suitable for grain storage. Some studies have also used Trichoderma, Metarhizium and Bacillus thuringiensis to control book lice, but the experimental results have not been satisfactory (Turner, 1998).

[0007] The main mechanisms of chemical control of book lice include contact killing and fumigation. There have also been many research reports on contact insecticides. For example, pyrethrum and pyrethroid insecticides, which are usually effective against pests such as grain weevils, have been found to be less sensitive to some organophosphorus insecticides, but less sensitive to synthetic pyrethroid insecticides (Turner, 1994). A new type of bacterial insecticide, spinosyn, has also been developed as a grain storage preservative. After the experiment, it was found that spinosyn only had good effects on Oligonychus sylvestre, but had no obvious effects on Oligonychus perseae, Oligonychus ununguis and Oligonychus nonlineatus (Nayak, 2005).

[0008] The ecological characteristics of book lice in grain storage also have an important impact on the results of controlled atmosphere control. Nitrogen gas controlled atmosphere has been rapidly developed in China and has good control effects on many types of grain storage insects, but it has little effect on book lice. For example, high concentrations of CO2 have a significant lethal effect on Oligonychus eu-nunguis, but different stages of book lice have different responses to controlled atmosphere. The eggs are not sensitive to CO2 (Wang et al, 1999). At the same time, long-term use can cause book lice to develop resistance, resulting in poor control effects.

[0009] In general, chemical insecticides are commonly used in grain storage environments, but they can cause pests to develop resistance and still cause pests to proliferate, affecting the quality of grain. Controlled atmosphere control in physical control has broad application prospects, but it requires high air tightness of the grain warehouse, high proficiency of the operator, and high implementation and maintenance costs. Therefore, it is necessary to develop a new type of grain storage pest control method. SUMMARY

[0010] The present application aims to provide a grain heap pest trapping assembly, a trap and a book louse trapping method, so as to efficiently kill grain heap pests, especially book lice.

[0011] In order to solve the above technical problems, the present application adopts the following specific scheme: a grain heap pest trapping assembly, comprising a trapping cylinder and a pesticide killing chamber arranged below the trapping cylinder; the cylinder wall of the trapping cylinder is densely provided with trapping holes; the pesticide killing chamber comprises a cup body and a shell arranged outside the cup body, the cup opening of the cup body is communicated with the inner cavity of the trapping cylinder, a gap is arranged between the cup wall of the cup body and the inner wall of the shell, and a through hole is arranged on the cup wall of the cup body and communicated with the gap.

[0012] As a further optimization of the above technical scheme, an inclined downward guide piece is arranged on the upper edge of the through hole on the outer side of the cup body.

[0013] As a further optimization of the above technical scheme, a mounting hole is arranged on the cup wall of the cup body, and an alloy piece is embedded in the mounting hole, and the alloy piece is folded outward to form the guide piece and the through hole.

[0014] As a further optimization of the above technical scheme, the shell is conical, and the large-diameter end of the shell is detachably connected with the upper end of the cup body.

[0015] As a further optimization of the above technical scheme, the cup body is detachably connected with the trapping cylinder.

[0016] As a further optimization of the above technical scheme, the trapping hole is conical, and the large-diameter end of the conical hole faces outward.

[0017] A grain storage pest trap, comprising a grain surface pest trapping assembly and the above-mentioned grain heap pest trapping assembly, the grain surface pest trapping assembly is arranged above the grain heap trapping assembly; the grain surface pest trapping assembly comprises a trapping cup, a corrugated board covering the cup opening of the trapping cup and a trapping element detachably mounted in the trapping cup, and the corrugated board is provided with a trapping channel communicated with the trapping cup.

[0018] As a further optimization of the above technical scheme, the trapping element comprises a trapping core shaft, a first insect sticking plate and a second insect sticking plate arranged on the trapping core shaft, the first insect sticking plate is a plurality of plates and is distributed in a circumferential interval around the trapping core shaft, the second insect sticking plate is arranged on the inner wall of the trapping cup, and the lower part of the trapping core shaft is detachably connected with the trapping cup.

[0019] As a further optimization of the above technical scheme, the trapping core shaft is a hollow shaft, an insect trapping agent is placed inside the hollow shaft, and a plurality of air permeable holes are arranged on the trapping core shaft.

[0020] A book louse trapping method based on the above-mentioned grain storage pest trap, comprising the following steps:

[0021] S1, add diatomite into the cup body, and add attractant into the shell, the height of diatomite is lower than the height of the through hole;

[0022] S2, insert the stored grain pest trap into the grain pile, keep the corrugated board of the grain surface pest trapping assembly on the grain surface, and perform the pest trapping operation; the grain surface pests fall into the insect trapping cup through the insect trapping channel on the corrugated board and adhere to the first insect sticking plate or the second insect sticking plate; the pests in the grain pile enter the insect trapping cylinder through the insect trapping hole and fall into the diatomite in the cup body, part of the pests are killed by the diatomite and remain in the cup body, and the other part of the pests with diatomite climb out of the through hole to the shell;

[0023] S3, after the trapping is completed, the stored grain pest trap is taken out, the first insect sticking plate and the second insect sticking plate are replaced to clean the pests in the grain surface pest trapping assembly, and the shell and the cup body are removed from the insect trapping cylinder to clean the pests in the grain pile pest trapping assembly.

[0024] Compared with the prior art, the beneficial effects of the present application are as follows:

[0025] The grain pile pest trapping assembly can kill the pests in the grain pile, the through hole is arranged on the cup body of the insecticidal chamber to enable the pests in the cup body to climb out to the gap between the shell and the cup body, so that when the cup body is filled with too many pests, the pests falling down can not contact the insecticide in the cup body, the utilization rate of the insecticide is improved, and the space utilization rate of the device is improved.

[0026] In the book louse trapping method disclosed in the present application, diatomite is added into the cup body of the stored grain pest trap, the diatomite can directly kill the book louse pests, and on the other hand, the diatomite can stimulate the book louse pests to climb out of the through hole of the cup body and fall into the shell outside the cup body, in this process, the diatomite adheres to the body surface of the book louse pests, since the body wall of the book louse pests is relatively thin, the friction of the diatomite on the book louse pests during crawling can cause the body wall to break, accelerating the death of the pests, and the water absorption of the diatomite can absorb the moisture in the cup body and the shell, reducing the air humidity in the cup body and the shell, since the book louse pests absorb high humidity environment, the decrease of the environmental humidity can further accelerate the death of the pests.

[0027] The mechanism of diatomite in trapping and killing book louse pests is that when the book louse pests crawl in the diatomite, the diatomite can absorb the outer wax of the pests, destroy the structure and cause the pests to dehydrate and die. Meanwhile, the diatomite also has a puncture effect, the diatomite can pierce the body surface of the pests, invade the epidermis of the book louse pests and even enter the body of the pests, cause the disorder of the respiratory, digestive, reproductive and movement systems of the pests, and absorb 3-4 times the weight of the pests, finally leading to the death of the book louse pests.

[0028] When booklice enter the insecticidal zone, the diatomaceous earth inside stimulates them to crawl out through the pores on the surface of the zone and fall into the collection area. The diatomaceous earth inside absorbs the outer wax layer of the booklice's body, causing them to dehydrate and die. This dries the dead insects that fall into the collection cup and maintains a dry environment inside the cup, making cleaning easier after the trapping process. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of Example 1;

[0030] Figure 2 This is a schematic diagram of the structure of Example 2;

[0031] Figure 3 This is a side cross-sectional view of the grain pest trapping component in Example 2;

[0032] Figure 4 A top view of the bottom of the insect-attracting cup with a positioning device;

[0033] Figure 5 A top view of an insect-attracting mandrel with positioning blocks;

[0034] Figure 6 This is a top view of the support frame inside the shell;

[0035] Figure 7 This is a cross-sectional view of the side wall of the insect-attracting tube;

[0036] Reference numerals: 1. Handle; 2. Corrugated board; 201. Insect-attracting channel; 3. Insect-attracting cup; 4. Insect-attracting core shaft; 5. Insect-attracting tube; 6. Insect-attracting hole; 7. Through hole; 8. Cup body; 9. Shell; 10. Support frame; 1001. Support plate; 1002. Support rod; 11. Attractant; 12. Insecticide; 13. Tube cover; 14. Ventilation hole; 15. Second sticky insect board; 16. First sticky insect board; 17. Cup bottom; 18. Positioning component; 19. Positioning block; 20. Annular support platform; 21. Installation area; 22. Installation tube; 23. Installation rod. Detailed Implementation

[0037] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Parts not described or disclosed in detail in the following embodiments of the present invention should be understood as prior art known or should be known by those skilled in the art.

[0038] Example 1

[0039] like Figure 1As shown, this embodiment discloses a grain pile pest trapping device for being inserted into a grain pile to trap stored grain pests. The grain pile pest trapping device includes an insect-attracting tube 5 and an insect-killing chamber. The tube wall of the insect-attracting tube 5 is densely covered with insect-attracting holes 6, and the insect-killing chamber is located below the insect-attracting tube 5.

[0040] The cross-section of the insect-attracting tube 5 is circular. The diameter of the insect-attracting hole 6 on the tube wall affects the trapping efficiency and escape rate of pests in the grain. It is also related to the size of the stored grain particles. For example, when using this grain pest trapping component to trap booklice, since booklice are small, only 1-3 mm in size, and wheat particles are about 2.2 mm in diameter, the diameter of the insect-attracting hole 6 is selected to be 1.5 mm, taking into account the size of the trapped pests and the size of the stored grain particles.

[0041] like Figure 7 As shown, the insect-attracting hole 6 is cone-shaped, with the larger diameter end of the cone-shaped insect-attracting hole 6 facing outwards from the insect-attracting tube 5 and the smaller diameter end facing inwards from the insect-attracting tube 5. This arrangement allows pests to easily enter the insect-attracting tube 5 through the larger diameter end of the insect-attracting hole 6, and makes it difficult for pests inside the insect-attracting tube 5 to escape through the smaller diameter end of the insect-attracting hole 6, thus reducing the escape of pests inside the insect-attracting tube 5 and improving the trapping efficiency. When using the grain pile trapping component of the present invention to trap booklice pests, the larger diameter end of the cone-shaped insect-attracting hole 6 has a diameter of 1.5 mm, and the smaller diameter end has a diameter of 1.2 mm.

[0042] The insect-killing chamber includes a cup body 8 and a shell 9 covering the outside of the cup body 8. The opening of the cup body 8 communicates with the inner cavity of the insect-attracting tube 5. A gap is provided between the cup wall of the cup body 8 and the inner wall of the shell 9, and a through hole 7 communicating with the gap is provided on the cup wall of the cup body 8. When this trapping assembly is in use, the attractant 11 is placed inside the shell 9, and the insecticide 12 is placed inside the cup body 8. Under the attraction of the attractant 11, pests enter the insect-attracting tube 5 through the insect-attracting hole 6 and fall into the cup body 8. Some pests are directly killed by the insecticide, while others that come into contact with the insecticide but are not killed can enter the gap between the inner wall of the cup body 8 and the shell 9 through the through hole 7 and fall into the shell 9. In this embodiment, the inner cavity of the cup body 8 is designated as the insect-killing area, and the gap between the cup body 8 and the shell 9 is designated as the insect-collecting area.

[0043] The cup body 8 and the insect-attracting tube 5 are detachably connected. Specifically, the cup body 8 and the insect-attracting tube 5 are connected by threads. The outer side of the cup wall at the mouth of the cup body 8 is provided with a first external thread, and the inner side of the tube wall at the lower end of the insect-attracting tube 5 is provided with a first internal thread that cooperates with the first external thread, so that the cup body 8 and the insect-attracting tube 5 can be detachably connected by threads.

[0044] The outer side of the cup body 8 at the cup opening and below the first outer thread is provided with a second outer thread, and the inner wall of the shell 9 is provided with a second inner thread for cooperating with the second outer thread. Through the cooperation of the second inner thread and the second outer thread, the shell 9 can be detachably covered outside the cup body 8.

[0045] The shell 9 is conical, the small-diameter end of the cone is downward, and the part threaded with the cup body 8 is located at the large-diameter end of the conical shell 9. The shell 9 is conical, which can facilitate the insertion of the insect trapping cylinder 5 into the deep part of the grain pile, and the process of inserting the insect trapping cylinder 5 into the grain pile is more labor-saving. The diameter of the cup body 8 is smaller than the diameter of the shell 9, and the diameter of the cup body 8 gradually decreases from top to bottom, so that there is always a gap between the cup wall of the cup body 8 and the side wall of the shell 9, so as to avoid the shell 9 from contacting the cup body 8 to block the through hole 7 and hinder the pests from climbing out of the cup body 8.

[0046] In this embodiment, the diameter of the insect trapping cylinder 5 is 14 cm, the height is 32.82 cm, and the thickness is 0.4 cm. The cup body 8 is similar to a small bowl with a diameter of 12.8 cm and a height of 5.17 cm. The total height of the cup body 8 is 5.47 cm, and the upper end is a threaded opening with a height of 0.3 cm. The surface of the cup body 8 is also provided with a thread pattern with a height of 0.3 cm at a distance of 0.3 cm from the uppermost end, which is used to connect the shell 9. The shell 9 is a conical insect collecting cup with a diameter of 13.82 cm and a height of 23 cm. The cup opening is a threaded opening with a height of 0.3 cm, and the total height is 23.3 cm. It is made of pp plastic material.

[0047] To prevent the escape of pests, a special coating is applied to the inner wall of the shell 9 of the trap, making the inside smooth, so that it is difficult for pests to climb out along the inner wall after entering the insect collecting area. Considering that polytetrafluoroethylene not only has a low sliding friction coefficient (0.05-0.15), but also makes the trap less likely to attach dirt, even if dirt is attached, it can be easily removed; plus the polytetrafluoroethylene coating has excellent properties of wear resistance, corrosion resistance and high temperature resistance, thereby increasing the service life and cleaning cycle of the trap. Therefore, in the selection of special coating, it is determined to uniformly coat polytetrafluoroethylene on the inner wall of the insect collecting area.

[0048] In addition, the shell 9 and the insect trapping cylinder 5 can also be connected by threads, and the cup body 8 is clamped in the shell 9. The outer side of the cylinder wall at the lower end of the insect trapping cylinder 5 is provided with an outer thread, and the inner wall of the shell 9 is provided with an inner thread for cooperating with the outer thread of the insect trapping cylinder 5. An annular boss is provided on the inner wall of the shell 9, and the outer wall of the cup opening of the cup body 8 is provided with a support ring, which is used to support on the annular boss to realize the detachable connection of the cup body 8 and the shell 9. In order to make the connection stable, a groove is opened on the upper end surface of the annular boss, and a protrusion is opened on the lower end surface of the support ring for cooperating with the groove.

[0049] In addition to threaded connections, the detachable connection between the insect-attracting tube 5 and the shell 9, and between the insect-attracting tube 5 and the cup body 8, can also be a snap-fit ​​connection, a plug-in connection, or other methods, which will not be listed here.

[0050] The bottom of the cup body 8 is flat. The insecticide 12 is laid on the flat surface so that more insecticide 12 can come into contact with the pests. When placing the insecticide 12 in the cup body 8, it is necessary to ensure that the height of the insecticide 12 does not exceed the setting height of the lowest through hole 7 to avoid the insecticide 12 overflowing from the through hole 7.

[0051] An inclined guide plate is provided on the outer wall of the cup body 8, located at the upper edge of the through hole 7. Specifically, a mounting hole is formed on the wall of the cup body 8. The mounting hole is square, and an alloy sheet is embedded in the mounting hole. The alloy sheet is folded outward to form the guide plate and the through hole 7. In this embodiment, the angle between the outward fold of the alloy sheet and the side wall of the cup body 8 is 142°. By setting the guide plate, it can prevent pests that have crawled out of the cup body 8 from crawling upward, guide the pests to crawl downward, and thus cause the pests to fall into the insect collection area.

[0052] A horizontal support frame 10 is provided inside the shell 9. The support frame 10 is used to place the pest attractant 11. The pests that enter the insect trap 5 move downward under the combined action of their own gravity and the attractant 11 and fall into the cup body 8. After the insecticide 12 adheres to the cup body 8, they continue to crawl towards the shell 9 under the attraction of the attractant 11 and finally fall into the insect collection area of ​​the shell 9.

[0053] like Figure 6 As shown, the support frame 10 includes a central support plate 1001 and multiple support rods 1002 radially distributed around the support plate 1001. Pests that fall into the shell 9 can fall into the bottom of the shell 9 through the area between adjacent support rods 1002, so that the space inside the shell 9 can be fully utilized.

[0054] The attractant 11 is placed on the support plate 1001 through a material bag or material box, and can be fixed to the support plate 1001 by rope, clips, etc., which can prevent the attractant 11 from falling off the support plate 1001 during use.

[0055] The support rod 1002 is supported on the inner wall of the housing 9. In order to make the support frame 10 stable, the support rod 1002 can be fixed to the inner wall of the housing 9 by adhesive.

[0056] To facilitate the cleaning of pests inside the shell 9, it is preferable to detachably install the support rod 1002 on the inner wall of the shell 9. The inner wall of the shell 9 has mounting slots with the same number of support rods 1002. The support rod 1002 has a certain degree of elasticity, such as plastic rods or rubber rods. The support rod 1002 can be directly inserted into the mounting slot by slight bending.

[0057] The upper part of the insect trapping cylinder 5 is provided with a cylinder cover 13 capable of covering the cylinder body of the insect trapping cylinder 5, and the cylinder cover 13 is provided with a handle (not shown in the figure). When the insect trapping cylinder 5 is inserted into the grain pile, the handle can be left outside the grain pile to facilitate the removal of the insect trapping cylinder 5 for observing the insect trapping situation in the cylinder. The cylinder cover 13 is a circular plate, and a large number of insect trapping holes 6 can also be arranged on the circular plate, so that the insects can also enter the cylinder from the cylinder cover 13.

[0058] In this embodiment, the insecticide 12 capable of killing insects is contained in the cup body 8. The insects falling into the cup body 8 die after contacting the insecticide 12, and the dead bodies exist in the cup body 8. As the number of insects falling into the cup body 8 and the number of killed insects increase, the insects accumulate on the surface of the insecticide 12, and the subsequent falling insects are not easy to contact the insecticide 12, thereby reducing the insecticidal efficiency. By arranging the through hole 7 on the cup wall of the cup body 8, the insects entering the cup body 8 first contact the insecticide 12. Generally, the insects gradually die after contacting the insecticide 12 for a period of time. Therefore, the insects contacting the insecticide 12 enter the shell 9 in the process of continuing to crawl, reducing the accumulation of insects in the cup body 8, so that the subsequent falling insects can still contact the insecticide 12, thereby improving the utilization efficiency of the insecticide 12. The insects enter the shell 9, and the space in the shell 9 can also be fully utilized to increase the capacity of the insects. Therefore, the trapping assembly can trap insects to a large extent, improve the utilization efficiency of the insecticide 12, and improve the space utilization rate of the cup body 8 and the shell 9.

[0059] Embodiment 2

[0060] As shown in Figure 2 , Figure 3 , the present embodiment discloses a grain storage insect trapping device, which comprises a grain surface insect trapping assembly and the above-mentioned grain pile insect trapping assembly, and the grain surface insect trapping assembly is arranged above the grain pile insect trapping assembly.

[0061] The grain surface insect trapping assembly comprises an insect trapping cup 3, a corrugated plate 2 covering the cup opening of the insect trapping cup 3, and an insect trapping element detachably installed in the insect trapping cup 3. The corrugated plate 2 is provided with an insect trapping channel 201 communicating with the insect trapping cup 3.

[0062] The corrugated plate 2 is provided in multiple layers. The uppermost corrugated plate 2 covers the cup opening of the insect trapping cup 3 to prevent the insects entering the insect trapping cup 3 from escaping from the open cup opening, and also prevents the grain from falling into the insect trapping cup 3 during use. The middle part of each corrugated plate 2 except the uppermost one is provided with a circular hole with a size consistent with the cup opening of the insect trapping cup 3, so that the insect trapping channel 201 in the corrugated plate 2 is in communication with the inner cavity of the insect trapping cup 3.

[0063] The outer wall of the insect trapping cup 3 is fixed with an annular support table 20, the upper end surface of the annular support table 20 is flush with the cup mouth of the insect trapping cup 3, the annular support table 20 is integrally formed with the cup body 8, and the annular support table 20 can also be fixed with the outer wall of the insect trapping cup 3 through adhesive. The annular support table 20 is used to support the lower plate surface of the corrugated board 2, can increase the contact area with the corrugated board 2, fix the corrugated board 2, and improve the stability of the corrugated board 2 above the insect trapping cup 3.

[0064] In the selection of the number of layers of corrugated boards in the insect entry part, in order to accommodate more and increase the number of insects, two-layer corrugated boards and three-layer corrugated boards are compared by taking the example of trapping book lice. As shown in Table 1, the number of insects entering the three-layer corrugated board is more than that of the two-layer corrugated board. Therefore, the three-layer corrugated board 2 is selected to be stacked, and the insect entry hole of the corrugated board is designed to be triangular, and the surface of the corrugated board 2 is made of alloy plate material, which can enhance the strength and compression strength of the corrugated board 2.

[0065] Table 1: Number of book lice entering three-layer and two-layer corrugated boards

[0066]

[0067] The upper surface of the corrugated board 2 is fixed with a handle 1, the handle 1 is a half-arch shape, which is better for the operator to move, and the top handle part is designed to be wavy, which is better for the human finger to bend, and at the same time increases the friction.

[0068] The insect trapping element includes an insect trapping core shaft 4, a first insect trapping plate 16 and a second insect trapping plate 15 arranged on the insect trapping core shaft 4.

[0069] The insect trapping core shaft 4 is a hollow shaft, the inside of which is placed with an insect trapping agent, and a plurality of air holes 14 are arranged on the side surface. The insect trapping core shaft 4 is detachably installed in the insect trapping cup 3. The insect trapping core shaft 4 is a cylinder with a diameter of 1.2 cm, a height of 7.18 cm and a thickness of 0.1 cm, and is made of pp plastic.

[0070] As shown in Figure 3 , 4 , 5, the bottom 17 of the insect trapping cup 3 is concave to form a mounting area 21, and a plurality of positioning members 18 are arranged in the mounting area 21.

[0071] The number of positioning members 18 in the embodiment is four, and the positioning member 18 includes a horizontal baffle 101 and a vertical connecting plate 1801, the baffle 1802, the connecting plate 1802 and the bottom 17 of the insect trapping cup 3 jointly form a U-shaped positioning groove, and the four positioning grooves are all directed to the insect trapping core shaft 4.

[0072] Four positioning blocks 19 for use in conjunction with the positioning grooves are provided at the lower end of the insect-attracting mandrel 4. When the insect-attracting mandrel 4 is placed in the insect-attracting cup 3, the positioning blocks 19 are first located in the gaps between adjacent positioning members 18, and then the insect-attracting mandrel 4 is rotated circumferentially to cause the positioning blocks 19 to snap into the positioning grooves, thereby achieving the detachable connection between the insect-attracting mandrel 4 and the insect-attracting cup 3.

[0073] The insect-attracting mandrel 4 is a hollow shaft with insect-attracting agent placed inside. A plurality of ventilation holes 14 are provided on the side surface of the insect-attracting mandrel 4, and the diameter of the ventilation holes 14 is 0.4 cm. The upper end of the insect-attracting mandrel 4 is provided with a top cover to facilitate the replacement of the insect-attracting agent placed inside.

[0074] There are multiple first sticky insect boards 16 which are circumferentially spaced around the insect-attracting mandrel 4. A plurality of horizontal mounting rods 23 are fixed outside the insect-attracting mandrel 4, and the first sticky insect boards 16 are fixed on the mounting rods 23. In this embodiment, there are eight first sticky insect boards 16, and the first sticky insect boards 16 are vertically arranged. The cross-section of the first sticky insect boards 16 after being mounted on the insect-attracting mandrel 4 is in the shape of a "rice" character.

[0075] The second sticky insect board 15 is in the shape of an "inverted mushroom head" and fits the inner wall size of the insect-attracting cup 3.

[0076] The "inverted mushroom head"-shaped second sticky insect board 15 is a hemisphere with a diameter of 12.8 cm, a depth of 5.98 cm, and a thickness of 0.2 cm. The inside of the hemisphere is coated with adhesive, and a hole with a diameter of 1.2 cm passing through the insect-attracting mandrel 4 is opened at the center of its bottom. The second sticky insect board 15 is fixed to the insect-attracting mandrel 4 by bonding.

[0077] The "rice"-shaped first sticky insect board 16 has a length of 4.35 cm, a height of 3.2 cm, and a thickness of 0.2 cm. Its surface is also coated with adhesive. The eight first sticky insect boards 16 are equally divided and fixed to the hollow insect-attracting mandrel 4 by glue bonding. The arrangement of the first sticky insect board 16 and the second sticky insect board 15 makes it difficult for pests to climb out along the inner wall of the insect-attracting cup 3 after entering the insect-attracting cup 3.

[0078] In this embodiment, the upper end of the insect-attracting cylinder 5 extends upward to form a mounting cylinder 22, and the cylinder cover 13 of the insect-attracting cylinder 5 is located at the bottom of the mounting cylinder 22. The maximum outer diameter of the insect-attracting cup 3 is slightly smaller than the inner diameter of the mounting cylinder 22. When in use, the insect-attracting cup 3 is inserted into the cylinder from the upper end of the mounting cylinder 22. The annular support platform 20 on the insect-attracting cup 3 supports on the upper end surface of the mounting cylinder 22, and the bottom 17 of the insect-attracting cup 3 presses on the upper end surface of the cylinder cover 13 of the insect-attracting cylinder. Depending on the setting height of the insect-attracting cup 3, there may also be a certain gap between the bottom 17 of the insect-attracting cup 3 and the cylinder cover 13, as long as it is ensured that the insect-attracting cup 3 can be fixed inside the insect-attracting cylinder 5.

[0079] The grain storage pest trap can trap the grain storage pests on the grain surface and in the deep part of the grain pile. In use, the rest of the grain storage pest trap is placed below the grain surface, and the upper corrugated plate 2 and the insect trapping cup 3 connected therewith are used to trap the pests on the grain surface; the middle insect trapping cylinder 5 and the lower insect killing area and insect collecting area are used to trap the pests in the deep part of the grain pile. The entire trap is of a detachable structure, the internal structure of the grain surface trapping part is connected by a rotating buckle, and the other parts are connected by threads, so that the trap is convenient to install, detach and clean, and the trapped pests can be conveniently disposed. The insect trapping cup 2 of the grain surface trapping part of the trap can be replaced with a new device after the cup is filled with pests, so that the pests can be continuously trapped. The lower insect killing area and insect collecting area adopt a “Russian doll” structure, the insect collecting area wraps the insect killing area, the insect killing area is externally perforated, and there is a gap between the insect killing area and the insect collecting area, so that the pests can fall into the insect collecting area if the pests escape from the insect killing area, and the escape rate of the pests can be reduced. The inner wall of the shell 9 of the insect collecting area is coated with polytetrafluoroethylene, so that the escape rate of the pests can be further reduced.

[0080] In the process of grain storage, the shallow silo refers to a cylindrical ground grain silo with a ratio of the height of the silo wall to the inner diameter less than 1.5. There are large and small shallow silos, and the large shallow silo is mainly used for storing grains in a large grain depot. The diameter of the large shallow silo is 18-35 m, and the height is about 15-50 m. The large shallow silo is mostly a steel structure, uses fixed equipment to load grains, and is conducive to the implementation of the “four scatter” (scattered loading, unloading, transportation and storage) technology. However, due to the high grain pile and large silo capacity, the internal grain pile is prone to local high temperature, and the occurrence of the grain storage pests, and the occurrence of the grain storage pests can cause problems in grain quality and food consumption. Therefore, it is necessary to prevent and control the grain storage pests. In the process of storing grains in a shallow silo, due to the high grain loading line, it is relatively difficult to deal with pests when pests occur compared with other silos.

[0081] At present, in the control of the shallow silo grain storage pests, the book louse is one of the most difficult pests to prevent and control. In addition, the book louse is most likely to occur in high temperature and can rapidly break out. Therefore, in the control of grain storage pests, accurate trapping of book lice is a very key means for shallow silo stored grains. Therefore, it is necessary to trap book lice by using a trapping device. The grain storage pest trap of the present embodiment can trap various pests including book lice, and has a good trapping effect on book lice.

[0082] Embodiment 3

[0083] The present embodiment discloses a book louse trapping method, which comprises the following steps:

[0084] S1, diatomite is added into the cup body 8, and an attractant 11 is added into the shell 9, and the height of the diatomite is lower than the opening height of the through hole 7;

[0085] The diatomite is laid on the cup bottom 17 of the cup body 8, and the attractant 11 is placed on the support disc 1001 in the middle of the support frame 10 through a material bag or a material box, which has air holes to release the smell capable of attracting pests.

[0086] S2, the stored-grain pest trap is inserted into the grain pile, and the corrugated board 2 of the grain surface pest trapping assembly is kept on the grain surface to perform the pest trapping operation; the grain surface pests fall into the insect trapping cup 3 through the insect trapping channel 201 on the corrugated board 2 and adhere to the first insect sticking board 16 or the second insect sticking board 15; the pests in the grain pile enter the insect trapping cylinder 5 through the insect trapping hole 6 and fall into the diatomite in the cup body 8, and a part of the pests are killed by the diatomite and remain in the cup body 8, and the other part of the pests with the diatomite climb out to the shell 9 through the through hole 7;

[0087] S3, after the trapping is completed, the stored-grain pest trap is taken out, the first insect sticking board 16 and the second insect sticking board 15 are replaced to clean the pests in the grain surface pest trapping assembly, and the shell 9 and the cup body 8 are removed from the insect trapping cylinder 5 to clean the pests in the grain pile pest trapping assembly;

[0088] S301, the stored-grain pest trap is taken out from the grain pile, and the corrugated board 2 is taken off from the cup opening of the insect trapping cup 3;

[0089] S302, the insect trapping mandrel 4 is rotated to adjust the relative position of the positioning block 19 at the lower end of the insect trapping mandrel 4 and the lower positioning member 18 of the insect trapping cup 3, so that the insect trapping mandrel 4 and the first insect sticking board 16 and the second insect sticking board 15 thereon are taken out from the insect trapping cup 3, the first insect sticking board 16 and the second insect sticking board 15 are removed from the insect trapping mandrel 4, and new first insect sticking board 16 and second insect sticking board 15 are installed for the next round of insect sticking operation;

[0090] S303, the shell 9 is rotated to be separated from the cup body 8, the pests in the shell 9 are cleaned, the cup body 8 is rotated to be separated from the insect trapping cylinder 5 to clean the pests in the cup body 8, after the cleaning is completed, the diatomite in the cup body 8 and the attractant 11 in the shell 9 are supplemented, and then the cup body 8 and the shell 9 are reset for the next round of insect sticking operation.

[0091] Diatomaceous earth is a kind of siliceous sedimentary rock with amorphous silicon dioxide as the main component. Diatomaceous earth is a very small particle with strong adsorption capacity, and it has the characteristics of high porosity, small specific gravity, heat preservation and insulation, non-combustible, corrosion resistance and the like. The mechanism of using diatomaceous earth to kill book lice is as follows: when the book lice crawl in the diatomaceous earth, the diatomaceous earth absorbs the outer wax of the body of the book lice, destroys the structure and causes the book lice to dehydrate and die. At the same time, the diatomaceous earth also has a piercing effect, which can pierce the body surface of the book lice, enter the skin of the book lice and even enter the body of the book lice, causing disorder of the respiratory, digestive, reproductive and movement systems of the book lice, and absorbing 3-4 times the weight of water to eventually cause the death of the book lice.

[0092] When the book lice enter the insect killing area, the diatomaceous earth in the insect killing area will stimulate the book lice to crawl out of the through hole on the surface of the insect killing area and fall into the insect collecting area. The built-in diatomaceous earth will absorb the outer wax of the body of the book lice, causing the book lice to dehydrate and die, so that the dead bodies of the book lice falling into the insect collecting cup become dry, and the dry environment in the insect collecting cup can be maintained, facilitating the cleaning work after the trapping is completed.

[0093] The diatomaceous earth absorbs the moisture in the air in the insect killing chamber, reduces the air humidity, and can also inhibit the survival of the book lice to a certain extent, so that the diatomaceous earth is placed in the cup body 8 to kill the book lice. Combined with the characteristics of the thin body wall of the book lice and the preference for a high-humidity environment, the method has strong pertinence and high insect killing efficiency.

[0094] The attractant 11 used in the embodiment can be a food attractant, a pest sex pheromone, etc.

[0095] Regarding the food attractant for trapping book lice, from the perspective of ecology, the method for preventing and controlling pests not only meets the needs of environmental protection, but also has important theoretical significance and practical value for the management of pest resistance and green grain storage. The selection of the attractant 11 in the attractant core shaft and the attractant 11 in the shell 9 in the present application includes but is not limited to the following: 1. The attractant core prepared with 1-octene-3-ol, linoleic acid, hexadecanoic acid and vanillin as active ingredients greatly improves the trapping efficiency of the trap on the book lice in stored grain; 2. A large number of female and nymph book lice are captured by mixing wheat germ, wheat flour, yeast powder and skimmed milk powder (according to a mass ratio of 5:5:5:1) and adding appropriate honey; 3. The use of yeast powder as an attractant, together with locust bean meal and brown rice as bait, also has good killing effect on book lice.

[0096] The trapping efficiency of the attractant to the trap is also an important factor, different attractants are suitable for different pests, and different concentrations of the same attractant will also affect the trapping effect. According to the trapping effect of different attractants on pests, the attractant with good trapping effect can be used for trapping and control, which can not only avoid the problem of pest resistance, but also has the advantages of low cost, safe operation and green environmental protection. If used together with pheromone, the control effect can be improved.

[0097] In practical application of pest sex pheromone, it is necessary to release the attractant by using slow-release technology, which can slow down the release speed of sex pheromone, and control pests in an efficient and economical way. In the research on slow-release technology, porous starch bait has the advantages of good slow-release effect, no pollution, no residue, and safety to grain, so it has good application prospect in the trapping technology of stored grain pests. The mixed attractant of denatured starch and agar can not only prolong the trapping time, but also increase the number of trapped booklice, so denatured starch can also be used as an environmentally friendly slow-release agent in the mixed attractant product of booklice pests.

[0098] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A grain storage pest trap, characterized in that, Including grain surface pest trapping components and grain pile pest trapping components; The grain pile pest trapping assembly includes an insect trap (5) and an insect-killing chamber located below the insect trap (5); The insect-attracting tube (5) has numerous insect-attracting holes (6) on its wall; the insect-attracting holes (6) are conical, with the larger diameter end of the cone facing outward from the insect-attracting tube (5); The insect-killing chamber includes a cup body (8) and a shell (9) covering the outside of the cup body (8). The cup mouth of the cup body (8) is connected to the inner cavity of the insect-attracting tube (5). There is a gap between the cup wall of the cup body (8) and the inner wall of the shell (9), and a through hole (7) communicating with the gap is opened on the cup wall of the cup body (8). An inclined guide plate is provided on the upper edge of the through hole (7) on the outside of the cup body (8); The cup body (8) has a mounting hole on its wall, and an alloy sheet is embedded in the mounting hole. The alloy sheet is folded outward to form the guide plate and the through hole (7). The grain surface pest trapping component is set above the grain pile pest trapping component; the grain surface pest trapping component includes a pest trapping cup (3), a corrugated plate (2) covering the mouth of the pest trapping cup (3), and a pest trapping element that can be detachably installed in the pest trapping cup (3). The corrugated plate (2) is provided with a pest trapping channel (201) that communicates with the pest trapping cup (3). The insect-attracting element includes an insect-attracting core shaft (4), a first sticky insect plate (16) and a second sticky insect plate (15) disposed on the insect-attracting core shaft (4). The first sticky insect plate (16) consists of multiple pieces and is distributed circumferentially around the insect-attracting core shaft (4). The second sticky insect plate (15) is laid on the inner wall of the insect-attracting cup (3). The lower part of the insect-attracting core shaft (4) is detachably connected to the insect-attracting cup (3).

2. The grain storage pest trap according to claim 1, characterized in that, The shell (9) is conical, and the large diameter end of the shell (9) is detachably connected to the upper end of the cup body (8).

3. The grain storage pest trap according to claim 1, characterized in that, The cup body (8) and the insect-attracting tube (5) are detachably connected.

4. The grain pest trap according to claim 1, characterized in that: The insect-attracting core (4) is a hollow shaft with an insect attractant placed inside. The insect-attracting core (4) has multiple ventilation holes (14).

5. A method for trapping booklice, characterized in that, This method, based on the grain pest trap of claim 1, includes the following steps: S1. Add diatomaceous earth into the cup body (8) and add attractant (11) into the shell (9). The height of the diatomaceous earth is lower than the opening height of the through hole (7). S2. Insert the grain pest trap into the grain pile, keeping the corrugated plate (2) of the grain surface pest trapping component on the grain surface for pest trapping operation; grain surface pests fall into the insect trapping cup (3) through the insect trapping channel (201) on the corrugated plate (2) and stick to the first sticky insect plate (16) or the second sticky insect plate (15); pests in the grain pile enter the insect trapping tube (5) through the insect trapping hole (6) and fall onto the diatomaceous earth in the cup body (8). Some pests are killed by the diatomaceous earth and remain in the cup body (8), while other pests with diatomaceous earth stuck to them crawl out through the through hole (7) to the shell (9). S3. After the trapping is completed, take out the grain pest trap, replace the first sticky insect board (16) and the second sticky insect board (15) to clean the pests in the grain surface pest trapping component, and remove the shell (9) and cup (8) from the insect trapping tube (5) to clean the pests in the grain pile pest trapping component.

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