An apparatus for controlling stored-grain pests by using natural predatory enemies

Abstract

The present invention relates to a device for controlling stored-grain pests by using natural enemies of predators, which comprises a device body in a cylindrical structure. At least two spiral grooves for pests to crawl are arranged on the outer periphery of the device body and are coaxially arranged with the device body. The device body has a natural enemy placement cavity for placing natural enemies of predators. A plurality of pest trapping channels extending radially along the device body are formed on the device body. The inner end channel openings of the pest trapping channels communicate with the natural enemy placement cavity, and the outer end channel openings of the pest trapping channels extend to the outer peripheral surface of the device body between the spiral grooves and / or adjacent spiral grooves. The present invention solves the technical problems in the prior art that when natural enemies are directly put into a granary, when the pest density is small, the natural enemies cannot survive continuously, and the limbs of the natural enemies will cause secondary pollution to the finished grain.

Description

Technical Field

[0001] The present invention relates to the field of biological control of stored - grain pests, and particularly to a device for controlling stored - grain pests by using predatory natural enemies. Background Art

[0002] In the control of stored - grain pests, the long - term and unreasonable use of phosphine and protectants has led to the widespread emergence of pest resistance. The widespread resistance has reduced the control effect of traditional pesticides. Therefore, it is necessary to develop green and efficient alternative control forms. Biological control has the advantages of effectively controlling pests, not polluting the environment, and reducing control costs. Using predatory natural enemies, such as pseudoscorpions and Xylocoris flavipes, can effectively control stored - grain pests. However, the control effect of natural enemies is greatly affected by the external environment. Generally speaking, all factors that can affect the biology of pests can more or less affect the control effect of natural enemies. When the pest density is low, it is difficult for natural enemies to search for pests. Since natural enemies cannot feed on grains and can only live on pests, natural enemies that cannot search for pests are difficult to survive stably in the stored - grain environment. Therefore, when using natural enemies to control pests in the stored - grain environment, it is necessary to solve the problem of the continuous survival of natural enemies when the prey density is low.

[0003] In addition, if natural enemies are directly released into the stored - grain environment to control pests, after the natural enemies die, they will fall into the stored grains. During the later grain - processing process, the natural enemies mixed into the grains will appear in the finished grains in the form of animal - source impurities together with insects, that is to say, natural enemies will cause secondary pollution of the finished grains. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for controlling stored - grain pests by using predatory natural enemies, so as to solve the technical problems in the prior art that when directly releasing natural enemies into the granary, when the pest density is small, natural enemies cannot survive continuously, and the limbs of natural enemies will cause secondary pollution of the finished grains.

[0005] To solve the above - mentioned technical problems, the technical solution of a device for controlling stored - grain pests by using predatory natural enemies in the present invention is as follows:

[0006] A device for controlling stored - grain pests by using predatory natural enemies includes a cylindrical device body. At least two spiral grooves for pests to crawl are arranged on the outer periphery of the device body coaxially with the device body. The device body has a natural - enemy placement cavity for placing predatory natural enemies. A plurality of pest - trapping channels extending radially along the device body are opened on the device body. The inner - end channel openings of the pest - trapping channels communicate with the natural - enemy placement cavity, and the outer - end channel openings of the pest - trapping channels extend to the outer peripheral surface of the device body between the spiral grooves and / or adjacent spiral grooves.

[0007] Furthermore, the device body includes a top plate, a bottom plate, and a plurality of intermediate plates sequentially stacked in the vertical direction between the top plate and the bottom plate. Each intermediate plate is composed of a hollow corrugated plate. The corrugated plate includes an upper plate body, a lower plate body, and a corrugated support disposed between the upper plate body and the lower plate body. The troughs of the corrugated support constitute the pest trapping channel, and the inner holes of each corrugated plate together constitute the natural enemy placement cavity.

[0008] Furthermore, the outer periphery of each corrugated plate has a plurality of arc-shaped protrusions sequentially arranged in the circumferential direction. The space between two adjacent arc-shaped protrusions is a corrugated plate groove. Define the two adjacent corrugated plates in the vertical direction as the upper corrugated plate and the lower corrugated plate respectively. The upper corrugated plate and the lower corrugated plate are concentrically arranged. In the vertical direction, the corrugated plate grooves of each upper corrugated plate are arranged staggeredly with the corrugated plate grooves of the corresponding lower corrugated plate. The corresponding corrugated plate grooves of all corrugated plates together constitute the spiral groove.

[0009] Furthermore, the outer end opening of the pest trapping channel extends to the outer peripheral surfaces of the corrugated plate groove and the arc-shaped protrusion.

[0010] Furthermore, the corrugated plate is a cardboard or a plastic plate.

[0011] Furthermore, the inner hole diameter of the lower corrugated plate is smaller than that of the upper corrugated plate. A climbing step for the predatory natural enemy to climb upward is formed between the inner holes of two adjacent corrugated plates.

[0012] Furthermore, each climbing step includes a step vertical surface formed by the inner hole wall of the upper corrugated plate. Each climbing step further includes a step horizontal surface formed by the upper end surface of the inner end of the lower corrugated plate. An annular groove is provided on the step horizontal surface, and food and / or attractant capable of attracting pests is provided in the annular groove. The inner end opening of the pest trapping channel extends to the corresponding step vertical surface.

[0013] The beneficial effects of the present invention are as follows: when in use, the predatory natural enemy is placed in the natural enemy placement cavity of the device body, and the device body of the present invention is arranged vertically on the grain surface. For grain pile pests, some pests have hiding habits, and some pests have climbing habits. The pests with hiding habits will enter the natural enemy placement cavity through the pest trapping channel, and the pests with climbing habits can crawl upward along the spiral groove and enter the natural enemy placement cavity through the pest trapping channel during the crawling process. The predatory natural enemy located in the natural enemy placement cavity can crawl into the natural enemy cavity. The pests in the natural enemy placement cavity are eaten by the device body itself, and the device body itself serves as a placement container for the predatory natural enemies and also as a trapping device for luring pests, which can achieve the luring and aggregation of pests. When the pest density is low, it can still ensure that the predatory natural enemies have enough food to survive. Due to the existence of the device body, the limbs of the predatory natural enemies will not be scattered in the grain pile to cause secondary pollution of the finished grain. Since the predatory natural enemies eat the pests, the problem of the device body failing to trap the pests after the number of trapped pests is saturated is also avoided.

[0014] Furthermore, the device body includes a top plate, a bottom plate and a plurality of intermediate plates stacked in sequence between the top plate and the bottom plate in the up-down direction, each intermediate plate is composed of a hollow corrugated plate, and the outer periphery of each corrugated plate has a plurality of arc-shaped protrusions arranged in sequence in the circumferential direction. When the corrugated plates are arranged, adjacent corrugated plates are staggered at a certain angle in the circumferential direction, so that the corresponding corrugated plate grooves of all the corrugated plates together constitute the spiral groove, and the troughs of the corrugated plates of the corrugated plates themselves constitute pest trapping channels. The use of corrugated plates makes the manufacture of the device body simple and convenient.

[0015] Furthermore, the inner hole diameter of the lower corrugated board is smaller than the inner hole diameter of the upper corrugated board, and a climbing step for predators to climb up is formed between the inner holes of two adjacent corrugated boards. In this way, pests are distributed on the corresponding climbing steps, and the commercial steps can be used for predators with relatively bulky bodies to climb and stay, making it convenient for predators to prey on pests trapped by each layer of corrugated paper. The upper space of the entire natural enemy placement cavity is relatively large, providing space for the activities of predators. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a device for controlling stored-grain pests by preying on natural enemies in the present invention;

[0018] Figure 2 yes Figure 1Top view after removing the top plate;

[0019] Figure 3 is Figure 1 Top view of a single corrugated board in;

[0020] Figure 4 is Figure 3 Top view of the corrugated board after removing the upper plate body in;

[0021] Figure 5 is Figure 3 Schematic diagram of the cooperation of the upper plate body, lower plate body and corrugated support in;

[0022] Figure 6 is Figure 1 Enlarged view of part A in;

[0023] Figure 7 is Figure 1 Three-dimensional view of;

[0024] Explanation of reference numerals: 1. Device body; 2. Top plate, 3. Bottom plate; 4. Intermediate plate; 5. Spiral groove; 6. Upper corrugated board; 7. Lower corrugated board; 8. Natural enemy placement cavity; 9. Climbing step; 10. Arc-shaped protrusion; 11. Corrugated board groove; 12. Inner hole of corrugated board; 13. Lower plate body; 14. Corrugated support; 15. Upper plate body; 16. Pest trapping channel; 17. Vertical surface of step; 18. Horizontal surface of step. Detailed implementation mode

[0025] For the convenience of understanding the present invention, the present invention will be described in more detail below with reference to the drawings and specific embodiments. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present invention more thorough and comprehensive.

[0026] It should be noted that unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention.

[0027] An embodiment of a device for controlling stored-grain pests by using predatory natural enemies in the present invention is as Figures 1 - 7 shown: It includes a device body 1 with a cylindrical structure, and six spiral grooves 5 for pests to crawl are arranged on the outer periphery of the device body coaxially with the device body.

[0028] In this embodiment, the device body 1 includes a top plate 2, a bottom plate 3, and a plurality of intermediate plates 4 stacked in sequence in the vertical direction. Each intermediate plate 4 is composed of a hollow corrugated board, and the corrugated board is a cardboard (or plastic board). The corrugated board includes an upper plate body 15, a lower plate body 13, and a corrugated support 14 disposed between the upper plate body and the lower plate body. The troughs of the corrugated support 14 form a pest trapping channel 16 extending in the radial direction of the device body. There are a plurality of pest trapping channels on each corrugated board, and the plurality of pest trapping channels are arranged in sequence in the circumferential direction. The inner end channel opening of the pest trapping channel 16 communicates with the natural enemy placement cavity 8, and the outer end channel opening of the pest trapping channel extends to the outer peripheral surface of the device body between the spiral grooves and adjacent spiral grooves. The inner holes 12 of each corrugated board together form a natural enemy placement cavity for placing predatory natural enemies.

[0029] Each outer periphery of the corrugated boards has six arc-shaped protrusions 10 arranged in sequence in the circumferential direction. The outer peripheral shapes of each corrugated board are the same, all in a plum blossom shape. The space between two adjacent arc-shaped protrusions 10 is a corrugated board groove 11. Define the two adjacent corrugated boards in the vertical direction as the upper corrugated board 6 and the lower corrugated board 7 respectively. The upper corrugated board 6 and the lower corrugated board 7 are concentrically arranged. In the vertical direction, the corrugated board grooves of each upper corrugated board are arranged staggeredly with the corrugated board grooves of the corresponding lower corrugated board. The corresponding corrugated board grooves of all the corrugated boards together form the spiral groove 5. That is to say, when assembling each corrugated board, a certain angle needs to be staggered. In this embodiment, the circumferential angle between the bottom of the corrugated board groove of the upper corrugated board and the bottom of the corresponding corrugated board groove of the lower corrugated board is 5 degrees.

[0030] The outer end channel opening of the pest trapping channel 16 extends to the outer peripheral surface of the corrugated board groove and the arc-shaped protrusion.

[0031] The inner hole diameter of the lower corrugated board is smaller than that of the upper corrugated board. An upward climbing step 9 for the predatory natural enemy to climb up is formed between the inner holes of two adjacent corrugated boards. Each upward climbing step 9 includes a step vertical surface 17 formed by the inner hole wall of the upper corrugated board. Each upward climbing step 9 further includes a step horizontal surface 18 formed by the upper end surface of the inner end of the lower corrugated board. An annular groove is provided on the step horizontal surface 18, and food and / or attractant capable of attracting pests is provided in the annular groove. The inner end channel opening of the pest trapping channel extends to the corresponding step vertical surface.

[0032] During use, place the predatory natural enemies such as pseudoscorpions and Orius sauteri on the pest in the natural enemy placement cavity of the device body, and then place the device on the grain surface. Storage pests with a hiding habit, such as booklice, will crawl towards the pest trapping channel of the corrugated board and along the pest trapping channel towards the annular groove on the horizontal surface of the step; the booklice are small in size and can crawl along the pest trapping channel, while the predatory natural enemies are large in size and cannot crawl out through the pest trapping channel; pests with an upward climbing habit will crawl upward along the spiral groove on the outer periphery of the device body, and during the crawling process, they will enter the pest trapping channel and finally climb to the annular groove on the horizontal surface of the step. The use of the corrugated board makes it easier to set up the pest trapping channel and the spiral groove. Of course, it also makes the spiral groove itself have a certain degree of step (relatively rough), which is more convenient for pests to crawl.

[0033] The reason for using the spiral groove to trap pests with an upward climbing habit is that the spiral groove will not affect the cylindrical structure of the device body itself, so that a natural enemy placement cavity with a larger upper part and a smaller lower part can be formed inside the device body. After the pests crawl to the annular groove of the upward climbing step, the predatory natural enemies can crawl along the upward climbing step to the corresponding horizontal surface of the step, so as to feed on the pests. The pests are continuously eaten, thus avoiding the problem of the pest trapping becoming ineffective after the pest trapping quantity reaches saturation. The device body itself forms the trapping of pests, which can attract the surrounding pests into the natural enemy placement cavity, ensuring that the natural enemies can still survive when the pest density is low, and realizing the continuous biological control of pests; in addition, the limbs of the predatory natural enemies will not fall into the grain pile, avoiding the problem of secondary pollution of the finished grain.

[0034] In the above description of this specification, unless otherwise clearly specified and limited, terms such as "fixed", "installed", "connected" or "joined" should be understood in a broad sense. For example, for the term "connected", it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two components or the interaction relationship between two components. Therefore, unless otherwise clearly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

[0035] Based on the above description of this specification, those skilled in the art can also understand the terms used as follows. For example, terms indicating orientation or positional relationships such as "upper", "lower", "front", "rear", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "center", "longitudinal", "transverse", "clockwise" or "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings of this specification. They are only for the purpose of facilitating the description of the solution of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operated in the specific orientation. Therefore, the above terms of orientation or positional relationships cannot be understood or interpreted as limitations on the solution of the present invention.

[0036] In addition, the terms "first" or "second" etc. used in this specification to refer to numbers or ordinals are only for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "a plurality" is at least two, such as two, three or more, etc., unless otherwise specifically defined.

[0037] 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 them; 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 of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A device for controlling stored - grain pests by using predatory natural enemies, characterized in that: It includes a cylindrical device body. At least two spiral grooves for pests to crawl are arranged on the outer periphery of the device body coaxially with the device body. There is a natural - enemy placement cavity for placing predatory natural enemies inside the device body. A plurality of pest - trapping channels extending radially along the device body are opened on the device body. The inner - end channel openings of the pest - trapping channels communicate with the natural - enemy placement cavity, and the outer - end channel openings of the pest - trapping channels extend to the outer peripheral surface of the device body between the spiral grooves and / or adjacent spiral grooves. The device body includes a top plate, a bottom plate, and a plurality of intermediate plates sequentially stacked in the up - and - down direction between the top plate and the bottom plate. Each intermediate plate is composed of a hollow corrugated plate. The corrugated plate includes an upper plate body, a lower plate body, and a corrugated support arranged between the upper plate body and the lower plate body. The troughs of the corrugated support constitute the pest - trapping channels, and the inner holes of each corrugated plate together constitute the natural - enemy placement cavity. The inner holes of each corrugated plate are located at the central position of the device body. The outer periphery of each corrugated plate has a plurality of circumferentially arranged arc - shaped protrusions in sequence. The space between two adjacent arc - shaped protrusions is a corrugated - plate groove. Defining two adjacent corrugated plates in the up - and - down direction as the upper corrugated plate and the lower corrugated plate respectively, the upper corrugated plate and the lower corrugated plate are concentrically arranged. In the up - and - down direction, the corrugated - plate grooves of each upper corrugated plate are arranged staggeredly with the corrugated - plate grooves of the corresponding lower corrugated plate, and the corresponding corrugated - plate grooves of all corrugated plates together constitute the spiral grooves.

2. The device for controlling stored - grain pests by using predatory natural enemies according to claim 1, characterized in that: The outer - end channel opening of the pest - trapping channel extends to the outer peripheral surface of the corrugated - plate groove and the arc - shaped protrusion.

3. The device for controlling stored - grain pests by using predatory natural enemies according to claim 1, characterized in that: The corrugated plate is a cardboard or a plastic plate.

4. The device for controlling stored - grain pests by using predatory natural enemies according to claim 1, characterized in that: The inner - hole diameter of the lower corrugated plate is smaller than that of the upper corrugated plate, and a climbing step for the predatory natural enemy to climb up is formed between the inner holes of two adjacent corrugated plates.

5. The device for controlling stored - grain pests by using predatory natural enemies according to claim 4, characterized in that: Each climbing step includes a step vertical surface formed by the inner - hole wall of the upper corrugated plate. Each climbing step also includes a step horizontal surface formed by the upper end surface of the inner end of the lower corrugated plate. An annular groove is arranged on the step horizontal surface, and food and / or attractant capable of attracting pests is arranged in the annular groove. The inner - end channel opening of the pest - trapping channel extends to the corresponding step vertical surface.

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