A pest trapping device for selectively protecting natural enemies and its application

Abstract

The present invention discloses a pest trapping device for selectively protecting natural enemies. By utilizing the living habits of Lepidoptera pests, it attracts adult cotton bollworms, adult beet armyworms, adult Spodoptera litura, adult cotton leafrollers, adult cutworms and other Lepidoptera pests for capture to reduce the number of pests. At the same time, by arranging insect-blocking teeth pointing to the center of the attracting cavity on the inner edge of the insect inlet groove of the trapping device, it does not affect the entry of pests into the attracting cavity while preventing pests from escaping from the insect inlet groove. Natural enemy insects such as Adonia variegata, Coccinella undecimpunctata, Stethorus punctillum Weise, and Nabis sinoferus Hsiao, which are smaller in size than pests, can freely enter and exit. While trapping pests, it protects natural enemy insects, solves the problem that existing pest trapping devices are prone to capture natural enemy insects together when trapping pests, resulting in a simultaneous reduction in the number of pests and natural enemy insects and an insignificant control of the pest population, and achieves the purpose of protective biological control, having broad popularization and application value in the field of pest trapping technology.

Description

Technical Field

[0001] The present invention relates to the technical field of pest trapping. Specifically, the present invention relates to a pest trapping device for selectively protecting natural enemies and its application. Background Art

[0002] Integrated pest management is an applied science in entomology, mainly focusing on agricultural pests, aiming to clarify the occurrence, damage and outbreak laws of pests, and propose theories and methods for pest monitoring, early warning and sustainable management. Conservation Biological Control (CBC) refers to a method of reducing pest damage by changing the field environment or applying pesticide measures to protect or enhance specific natural enemies (i.e., predators, parasitoids and pathogens) or other biological effects. Compared with traditional biological control, CBC pays more attention to the protection of natural enemy insect populations.

[0003] Currently, the characteristics of pests such as phototaxis and chemotaxis are often utilized, and methods such as using lights and pheromone attractants are adopted to trap pests. Since most insects have a tendency, the effect of trapping pests is significant. However, there are few publicly disclosed pest control devices that protect natural enemy insects in current pest trapping technologies. Natural enemy insects often accidentally fall into the trapping device when preying on pests, resulting in the accidental capture of natural enemy insects when trapping pests, and selective trapping cannot be carried out. For example, when trapping adult Helicoverpa armigera, adult Spodoptera litura or adult Agrotis ypsilon, natural enemy insects such as adult Adonia variegata, adult Coccinella undecimpunctata and adult Nabis sinoferus are often captured together, reducing the number of natural enemy insects when trapping pests. In fact, the control of pest numbers is not obvious, and even large-scale insect disasters may be caused. Summary of the Invention

[0004] To solve the problem that the existing pest trapping devices often accidentally trap natural enemy insects while catching pests, reducing the number of both pests and natural enemy insects and not significantly controlling the pest population, the purpose of the present invention is to provide a pest trapping device that selectively protects natural enemies. By utilizing the living habits of Lepidoptera pests, it traps the adults of Lepidoptera pests such as Helicoverpa armigera, Spodoptera exigua, Spodoptera litura, Sylepta derogata, and Agrotis ypsilon to reduce the pest population. At the same time, by setting insect-blocking teeth pointing towards the center of the attracting cavity on the inner edge of the insect inlet groove of the trapping device, it prevents pests from escaping from the insect inlet groove while not affecting the entry of pests. Natural enemy insects such as Adonia variegata, Coccinella undecimpunctata, Stethorus punctillum, and Nabis sinoferus, which are smaller than pests, can freely enter and exit. It protects natural enemy insects while trapping pests, solves the problem that existing trapping devices are prone to accidentally trapping natural enemy insects when trapping pests, resulting in a simultaneous reduction in the number of pests and natural enemy insects and not significantly controlling the pest population, and achieves the purpose of protective biological control, having wide popularization and application value in the field of pest trapping technology.

[0005] The present invention is achieved through the following technical solutions:

[0006] A pest trapping device that selectively protects natural enemies provided by the present invention includes a cover plate. A attracting cavity is fixedly installed at the bottom of the cover plate. A trapping lamp is fixedly installed inside the attracting cavity. A middle plate is fixedly installed at the bottom of the attracting cavity. A feeding structure is movably installed at the bottom of the middle plate. The feeding structure includes a large semi-circular plate located at the top of the middle plate. Another small semi-circular plate is fixedly installed on the other side of the top of the middle plate. A cross bar is fixedly installed inside the cavity of the middle plate. A pneumatic cylinder is movably installed at the bottom of the large semi-circular plate. A baffle is fixedly installed at the bottom of the middle plate. A storage tank is fixedly installed at the bottom of the small semi-circular plate. A third sensor is fixedly installed on the outer surface of the storage tank. A discharge port is opened at the bottom of the storage tank.

[0007] In the present invention, a top cover is movably installed on the top of the cover plate. Insect inlet grooves are opened on the outer surface of the attracting cavity. A bottom plate is fixedly installed at the bottom of the middle plate.

[0008] In the present invention, insect-blocking teeth pointing towards the center of the attracting cavity are provided on the edges of the insect inlet grooves inside the attracting cavity.

[0009] In the present invention, a first sensor is fixedly installed on the outer surface of the pneumatic cylinder. Clamping plates are movably installed on the outer surfaces of the bottoms of the pneumatic cylinders. A first hinge wheel is hingedly installed inside the clamping plates. A push plate is movably installed inside the clamping plates. Fixing plates are fixedly installed on the outer surfaces of the bottoms of the push plates. A second hinge wheel is hingedly installed inside the fixing plates.

[0010] In the present invention, a movable plate located on the outer surface of a cross bar is movably installed on one side of the fixed plate. A placement groove is formed inside the movable plate, and a dosimeter is fixedly installed on one side inside the placement groove. A second sensor is fixedly installed on the top of the dosimeter.

[0011] In the present invention, a number of outlet holes are formed inside the baffle, and the size of each outlet hole is 8 - 10 mm.

[0012] Meanwhile, the present invention provides an application of the above-mentioned pest trapping device for selectively protecting natural enemies in trapping lepidopteran pests while selectively protecting natural enemy insects.

[0013] Compared with the prior art, by using a pest trapping device for selectively protecting natural enemies provided by the present invention, the following beneficial effects can be obtained:

[0014] (1) By setting a feeding structure in the present invention, the dosimeter can measure the amount of attractant inside the movable plate. When it is insufficient, a signal is sent from the second sensor to the first sensor to activate the pneumatic cylinder. The push plate is used to push the movable plate to slide inside the cross bar, so that the movable plate can reach the bottom of the storage tank. The third sensor receives the signal and the attractant inside the discharge port is placed into the placement groove for replenishment. It is convenient and fast to replace the attractant, easy to reuse, and improves the practicability.

[0015] (2) In the present invention, an insect attracting lamp and a feeding structure are combined to attract pests, improving the trapping efficiency of pests. Anti-insect teeth pointing to the center of the attracting cavity are arranged at the edge of the insect inlet groove on the inner side of the attracting cavity. It does not affect the entry of pests, but can prevent large pests from flying out of the attracting cavity. Small natural enemy insects can fly out from the insect inlet groove or the outlet holes of the bottom baffle. While catching pests, beneficial natural enemy insects are protected, effectively controlling the number of pests, and having wide popularization and application value in the field of pest trapping technology.

[0016] (3) By using the pest trapping device for selectively protecting natural enemies provided by the present invention and utilizing the living habits of lepidopteran pests, attractants with different specificities are used to trap the adults of lepidopteran pests such as Helicoverpa armigera, Spodoptera exigua, Prodenia litura, Sylepta derogata, Agrotis ypsilon, etc., to reduce the number of pests. Anti-insect teeth pointing to the center of the attracting cavity are arranged at the inner edge of the insect inlet groove of the trapping device. It does not affect the entry of pests into the attracting cavity and prevents pests from escaping from the insect inlet groove. Natural enemy insects such as Adonia variegata, Coccinella undecimpunctata, Stethorus punctillum, and Sinea diadema, which are smaller than pests, can freely enter and exit. While trapping pests, natural enemy insects are protected, solving the problem that the existing trapping devices are prone to accidentally trap natural enemy insects when trapping pests, resulting in a simultaneous reduction in the number of pests and natural enemy insects and an insignificant control of the number of pests, achieving the purpose of protective biological control, and having wide popularization and application value in the field of pest trapping technology. Brief Description of the Drawings

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Shown as a schematic structural view of the present invention;

[0019] Figure 2 Shown as a schematic bottom view structural view of the present invention;

[0020] Figure 3 Shown as a schematic bottom view structural view of the attracting cavity in the present invention;

[0021] Figure 4 Shown as a cross-sectional view of the attracting cavity in the present invention from the bottom view angle;

[0022] Figure 5 Shown as a schematic bottom view structural view of the middle plate in the present invention;

[0023] Figure 6 Shown as a schematic structural view of the feeding structure in the present invention;

[0024] Figure 7 Shown as the present invention Figure 6 Partial enlarged view at A in;

[0025] Figure 8 Shown as an exploded view of the present invention.

[0026] Reference Numerals: 1 - cover plate, 2 - top cover, 3 - attracting cavity, 4 - insect inlet groove, 41 - insect blocking teeth, 5 - middle plate, 6 - bottom plate, 7 - feeding structure, 71 - large semi-circular plate, 72 - small semi-circular plate, 73 - cross bar, 74 - pneumatic cylinder, 75 - first sensor, 76 - clamping plate, 77 - first hinge wheel, 78 - pushing plate, 79 - fixing plate, 710 - second hinge wheel, 711 - movable plate, 712 - placing groove, 713 - dosimeter, 714 - second sensor, 715 - reagent storage tank, 716 - third sensor, 717 - discharge port, 8 - insect attracting lamp, 9 - baffle, 10 - outlet hole. Detailed Embodiments

[0027] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the attached Figure 1-8 drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, for the convenience of description, the relative positional relationship of each component in a pest trapping device for selectively protecting natural enemies is described according to the Figure 1 layout mode of the attached Figure 1 drawings. For example, the positional relationships such as "upper", "lower", "left", "right", etc. are determined according to the

[0031] Embodiment 1: A pest trapping device for selectively protecting natural enemies

[0032] Combined with Figures 1 to 8 as shown in the figure, the embodiment of the present invention provides a pest trapping device for selectively protecting natural enemies, including a cover plate 1. A lure chamber 3 is fixedly installed at the bottom of the cover plate 1. An insect attracting lamp 8 is fixedly installed inside the lure chamber 3. A middle plate 5 is fixedly installed at the bottom of the lure chamber 3. A feeding structure 7 is movably installed at the bottom of the middle plate 5. The feeding structure 7 includes a large semi-circular plate 71 located at the top of the middle plate 5. Another small semi-circular plate 72 is fixedly installed on the other side of the top of the middle plate 5. A cross bar 73 is fixedly installed inside the cavity of the middle plate 5. A pneumatic cylinder 74 is movably installed at the bottom of the large semi-circular plate 71. A baffle 9 is fixedly installed at the bottom of the middle plate 5.

[0033] In the present invention, a top cover 2 is movably installed on the top of the cover plate 1. Insect inlet grooves 4 are formed on the outer surface of the lure chamber 3. A bottom plate 6 is fixedly installed at the bottom of the middle plate 5.

[0034] In the present invention, insect-blocking teeth 41 pointing to the center of the attracting chamber 3 are provided at the edges of the insect-entering grooves 4 inside the attracting chamber 3. The insect-attracting lamp 8 and the attractant in the feeding structure 7 can attract pests to enter the attracting chamber 3 from the insect-entering grooves 4, and the insect-blocking teeth 41 can prevent the pests from escaping from the insect-entering grooves 4.

[0035] In the present invention, a first sensor 75 is fixedly installed on the outer surface of the air cylinder 74. Clamping plates 76 are movably installed on the outer surfaces of the bottoms of the air cylinder 74. First articulated wheels 77 are hingedly installed inside the clamping plates 76. A push plate 78 is movably installed inside the clamping plates 76. Fixed plates 79 are fixedly installed on the outer surfaces of the bottoms of the push plate 78. Second articulated wheels 710 are hingedly installed inside the fixed plates 79. The downward movement of the air cylinder 74 enables the push plate 78 to push the movable plate 711 to move inside the cross bar 73.

[0036] In the present invention, a movable plate 711 located on the outer surface of the cross bar 73 is movably installed on one side of the fixed plate 79. A placement groove 712 is formed inside the movable plate 711. A dosimeter 713 is fixedly installed on one side inside the placement groove 712. A second sensor 714 is fixedly installed on the top of the dosimeter 713. The dosimeter 713 can be used for metering, and the second sensor 714 transmits signals to the first sensor 75.

[0037] In the present invention, a reagent storage tank 715 is fixedly installed at the bottom of the small semi-circular plate 72. A third sensor 716 is fixedly installed on the outer surface of the reagent storage tank 715. A discharge port 717 is formed at the bottom of the reagent storage tank 715. Upon receiving a signal by the third sensor 716, the attractant inside the reagent storage tank 715 is released, enabling timely replenishment of the attractant and maintaining the attracting effect for a long time.

[0038] In the present invention, a number of outlet holes 10 are formed inside the baffle 9, and the sizes of the outlet holes 10 are all the same. The baffle 9 can prevent large pests from escaping, and the outlet holes 10 allow small ladybugs to freely enter and exit.

[0039] Example 2: Application of a pest trapping device for selectively protecting natural enemies

[0040] When using the present invention, pests are attracted by the insect attracting lamp 8 and the attractant in the placement groove 712. When the attractant in the placement groove 712 is insufficient, a signal is sent from the second sensor 714 to the first sensor 75 to activate the pneumatic cylinder 74. The push plate 78 is used to push the movable plate 711 to slide inside the cross bar 73, so that the movable plate 711 can reach the bottom of the storage agent box 715. The third sensor 716 receives the signal and puts the attractant inside the discharge port 717 into the placement groove 712 for replenishment. The pests enter through the insect inlet groove 4 and fall into the middle plate 5. The edge of the insect inlet groove 4 on the inner side of the attracting cavity 3 can prevent large pests from flying out through the insect inlet groove 4. At the same time, small natural enemy insects following the pests can escape through the outlet hole 10 or the insect inlet groove 4, effectively carrying out selective trapping of pests, increasing the practicability, ensuring the trapping of large pests, facilitating repeated use, and having wide popularization and application value in the field of pest trapping technology.

[0041] Example 3: Application of a pest trapping device for selectively protecting natural enemies in trapping Lepidoptera pests while selectively protecting natural enemy insects

[0042] The experiment was carried out at the Korla Scientific Observation and Experiment Station of the Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences in July 2021. The specific plan is as follows:

[0043] 1. Experimental materials:

[0044] The experiment used a pest trapping device for selectively protecting natural enemies provided by the present application. The insect attracting lamp 8 in the trapping device used a black light with a wavelength of 333 nm of a commercially available ordinary noctuid trap. The ZhongJieSiFang Helicoverpa armigera pheromone attractant was added to the storage agent box 715. The control was a commercially available ordinary noctuid trap with the ZhongJieSiFang Helicoverpa armigera pheromone attractant placed in the same way.

[0045] 2. Experimental methods:

[0046] Scheme 1: Place a pest trapping device for selectively protecting natural enemies provided by the present application in a cotton field with an area of about 45 mu at the Korla Scientific Observation and Experiment Station, at a height of 1.5 meters from the ground, and place one in each cotton field.

[0047] Scheme 2: Place commercially available ordinary noctuid traps in cotton fields with the same area more than 200 meters away from the placement position of Scheme 1, at a height of 1.5 meters from the ground, and place one in each cotton field.

[0048] Simultaneously collect the number of common Lepidoptera pests and natural enemy insects trapped in the cotton fields every 3 days, and carry out 5 consecutive times. Record the number and average trapping number of common Lepidoptera pests and natural enemy insects trapped in the cotton fields respectively. The average trapping number is calculated according to the following formula:

[0049]

[0050] Table 1: Comparison of the trapping effects of different attracting devices on Lepidoptera pests and natural enemy insects

[0051]

[0052]

[0053] 3. Experimental results:

[0054] The average number of common Lepidoptera pests trapped by a pest trapping device for selectively protecting natural enemies in 5 trappings is 803.6, and the average number of pests trapped by a commercially available common noctuid moth trap is 795.2, with no difference between the two; while the average number of natural enemy insects trapped by the commercially available common noctuid moth trap is 208.8, and the average number of natural enemy insects trapped by a pest trapping device for selectively protecting natural enemies is 18.4, only 8.81% of the trapping amount of the commercially available common noctuid moth trap.

[0055] In summary, the pest trapping device for selectively protecting natural enemies provided by the present invention is provided with insect blocking teeth 41 pointing to the center of the attracting cavity 3 on the inner edge of the insect inlet groove 4 of the trapping device. Without affecting the entry of pests into the attracting cavity 3, it can prevent large-sized Lepidoptera pests such as adult Helicoverpa armigera from escaping from the insect inlet groove 4, while natural enemy insects such as Adonia variegata, Coccinella undecimpunctata, Stethorus punctillum, and Sinea diadema, which are smaller than pests, can freely enter and exit. It can protect natural enemy insects while trapping pests, can achieve specific attraction to different pests by using different attractants, timely supplement the attractant through the liquid storage tank 715, and extend the attracting period to ensure the attracting effect during long-term use. It solves the problem that the existing trapping device is prone to accidentally trapping natural enemy insects when trapping pests, resulting in a simultaneous reduction in the numbers of pests and natural enemy insects and an insignificant control effect on the number of pests, realizes the purpose of protective biological control, and the protection effect on natural enemy insects far exceeds that of commercially available common trapping devices, having broad popularization and application value in the field of pest trapping technology.

[0056] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pest trapping device for selectively protecting natural enemies, comprising a cover plate (1), characterized in that: The bottom of the cover plate (1) is fixedly installed with an attracting cavity (3). An insect attracting lamp (8) is fixedly installed inside the attracting cavity (3). The bottom of the attracting cavity (3) is fixedly installed with a middle plate (5). A feeding structure (7) is movably installed at the bottom of the middle plate (5). The feeding structure (7) includes a large semi-circular plate (71) located at the top of the middle plate (5). On the other side of the top of the middle plate (5), a small semi-circular plate (72) is fixedly installed. A cross bar (73) is fixedly installed inside the cavity of the middle plate (5). A pneumatic cylinder (74) is movably installed at the bottom of the large semi-circular plate (71). A baffle (9) is fixedly installed at the bottom of the middle plate (5). A reagent storage tank (715) is fixedly installed at the bottom of the small semi-circular plate (72). A first sensor (75) is fixedly installed on the outer surface of the pneumatic cylinder (74). Clamping plates (76) are movably installed on the outer surfaces of the bottoms of the pneumatic cylinders (74). A first articulated wheel (77) is hingedly installed inside the clamping plates (76). A push plate (78) is movably installed inside the clamping plates (76). Fixed plates (79) are fixedly installed on the outer surfaces of the bottoms of the push plates (78). A second articulated wheel (710) is hingedly installed inside the fixed plates (79). A movable plate (711) located on the outer surface of the cross bar (73) is movably installed on one side of the fixed plates (79). A placement groove (712) is formed inside the movable plate (711). A dosimeter (713) is fixedly installed on one side inside the placement groove (712). A second sensor (714) is fixedly installed on the top of the dosimeter (713).

2. The pest trapping device for selectively protecting natural enemies according to claim 1, characterized in that: A top cover (2) is movably installed on the top of the cover plate (1). Insect inlet grooves (4) are formed on the outer surfaces of the attracting cavity (3). A bottom plate (6) is fixedly installed at the bottom of the middle plate (5).

3. The pest trapping device for selectively protecting natural enemies according to claim 2, wherein: Blocking teeth (41) pointing to the center of the attracting cavity (3) are arranged at the edges of the insect inlet grooves (4) inside the attracting cavity (3).

4. The pest trapping device for selectively protecting natural enemies according to claim 1, characterized in that: A third sensor (716) is fixedly installed on the outer surface of the reagent storage tank (715). A discharge port (717) is formed at the bottom of the reagent storage tank (715).

5. The pest trapping device for selectively protecting natural enemies according to claim 1, wherein: A number of outlet holes (10) are formed inside the baffle (9), and the sizes of the outlet holes (10) are the same.

6. Application of the pest trapping device for selectively protecting natural enemies as claimed in claim 1 in trapping lepidopteran pests while selectively protecting natural enemy insects.

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