Predatory natural enemy and parasitic natural enemy breeding and synergistic releasing device and use method

Abstract

The invention discloses a predatory natural enemy and parasitic natural enemy breeding and synergistic releasing device and a using method, and belongs to the technical field of agricultural pest biological control, the predatory natural enemy and parasitic natural enemy breeding device comprises a natural enemy breeding box which is divided into a predatory natural enemy breeding area and a parasitic natural enemy breeding area which are relatively independent through a gauze partition plate, and predatory natural enemy and parasitic natural enemy are blocked; living plants are placed in the predatory natural enemy breeding area and the parasitic natural enemy breeding area; the two conical channel groups are respectively arranged on the left side surface and the right side surface of the natural enemy breeding box and are respectively communicated with the predatory natural enemy breeding area and the parasitic natural enemy breeding area; the two circular pistons are arranged on the front side of the natural enemy breeding box and communicated with the predatory natural enemy breeding area and the parasitic natural enemy breeding area respectively. The predatory natural enemy and parasitic natural enemy breeding and synergistic releasing device has the advantages of being easy to operate, small in investment and good in prevention and control effect, natural enemy can be released into a prevention and control area for a long time, and long-term effective biological prevention and control on the prevention and control area are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of biological control of agricultural pests, and particularly relates to a device for breeding and co-releasing predatory natural enemies and parasitic natural enemies and a method for using the same. Background Art

[0002] In nature, there are often more than one natural enemy that plays a controlling role on a certain pest. At present, the combined application of multiple natural enemies has attracted extensive attention from scholars at home and abroad. Most pests often have multiple natural enemies including predators and parasitoid wasps, and predators and parasitoid wasps have different characteristics in pest control. Predatory natural enemies generally have a wide food range and a long generation cycle, so they are not so sensitive to the change in the population quantity of a single pest population; parasitic natural enemies have characteristics such as a narrow food range, a generation time similar to that of the host, and high fecundity. The occurrence of field pests is complex and changeable. When only predatory natural enemies are released, if the release quantity is small, the target pests cannot be effectively controlled and their population density cannot be reduced, while releasing a large number of predatory natural enemies is likely to cause damage to cash crops; if only obligate parasitic natural enemies are released, it is also necessary to consider the density interference among the natural enemy insects themselves and the inability to control pests other than the target pests, which will lead to the outbreak of secondary pests into primary pests. Therefore, it is necessary to incorporate the combined release of predatory natural enemies and parasitic natural enemies into the integrated management of pests. Taking the control of whitefly pests as an example, Orius similis, a southern minute pirate bug, belongs to omnivorous insects with a wide feeding range. It is mainly distributed in southern and southwestern regions such as Hubei, Yunnan, and Guizhou. It has a large population base in the field and is an important predatory natural enemy insect. Encarsia formosa, as an obligate parasitoid wasp of whitefly pests, is the dominant parasitic natural enemy of whiteflies. Orius similis prefers to prey on the low-instar nymphs of whiteflies, while Encarsia formosa prefers to parasitize the high-instar nymphs of whiteflies. Therefore, the combined use of the two may make up for the deficiency of a single natural enemy in utilizing hosts of different instars, thereby improving the control effect on whiteflies.

[0003] The current biological control technology still has significant deficiencies: First, most of the existing natural enemy release devices are designed with a single function and lack an integrated structure for the coordinated operation of predatory and parasitic natural enemies; Second, the problem of spatial isolation of the two types of natural enemies has not been effectively solved, and predatory natural enemies are prone to preying on parasitic wasps, resulting in a decrease in parasitism efficiency; Third, there is a lack of breeding and release regulation mechanisms adapted to the biological characteristics of different natural enemies, making it difficult to achieve precise prevention and control. Although the concept of combined natural enemy control has received attention in the academic community, the existing devices cannot meet the actual needs of resource integration and improvement of control efficacy. Therefore, innovating resource integration, innovating the action mode of biological control, and improving the efficacy of biological control are urgent problems to be solved in biological control. Therefore, combining predatory natural enemies with stronger activity ability and parasitic natural enemies can not only exert the control ability of the two types of natural enemies on pests, but also utilize the function of preying on pests, and can also use the spatial isolation strategy to separate the two natural enemies, avoiding the predation of predators on parasitic wasps and stimulating the oviposition of parasitic wasps. Combining two biological control agents, predatory natural enemies and parasitic natural enemies, to control pests and giving play to their combined efficacy has a very broad application prospect. Summary of the Invention

[0004] The main object of the present invention is to provide a device and a use method for breeding and synergistically releasing predatory natural enemies and parasitic natural enemies to solve the problems existing in the prior art.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A device for breeding and synergistically releasing predatory natural enemies and parasitic natural enemies, comprising:

[0007] A natural enemy breeding box, which is divided into a relatively independent predatory natural enemy breeding area and a parasitic natural enemy breeding area by a screen partition to block predatory natural enemies and parasitic natural enemies, while stimulating the oviposition of parasitic wasps and avoiding the occurrence of intragroup predation. Living plants are placed in both the predatory natural enemy breeding area and the parasitic natural enemy breeding area;

[0008] Two conical channel groups, which are respectively arranged on the left and right sides of the natural enemy breeding box and are respectively communicated with the predatory natural enemy breeding area and the parasitic natural enemy breeding area, and are used for pests to enter the natural enemy breeding box from the field and the release of natural enemies;

[0009] Two circular pistons, which are both arranged on the front side of the natural enemy breeding box and are respectively communicated with the predatory natural enemy breeding area and the parasitic natural enemy breeding area. The circular pistons are both provided with non-woven fabric sleeves for introducing small pests.

[0010] Further, a solar panel is provided on the upper side of the natural enemy breeding box, and LED light strips are provided on both sides of the natural enemy breeding box to attract natural enemy insects to move from the breeding box to the field. The solar panel is electrically connected to a power source, and the power source is electrically connected to the LED light strips. A hanging hook is provided on the solar panel.

[0011] Further, the natural enemy breeding box is of a cube structure, and the screen partition is arranged at the middle position of the natural enemy breeding box. The screen partition is 120 mesh.

[0012] Further, the upper surface, lower surface, front surface, left and right side surfaces of the natural enemy breeding box are all made of transparent acrylic plates, and first screens are arranged in the middle of the left and right side surfaces, and a second screen is arranged at the rear. Both the first screen and the second screen are 120 mesh.

[0013] Further, a hanging hook is provided on the upper surface of the natural enemy breeding box for hanging small pest sex pheromones or lure cores.

[0014] Further, a sliding door is provided on the front surface of the natural enemy breeding box, and a movable door is provided on the sliding door. The circular piston is located above the movable door, and a door handle is provided on the movable door.

[0015] Further, the circular piston is a cylindrical hollow rod. The first end of the cylindrical hollow rod is located outside the natural enemy breeding box and is connected to a support ring. The support ring is used to connect a non-woven fabric sleeve. The second end extends into the natural enemy breeding box, and a water-absorbing sponge is wrapped around the outside of the second end.

[0016] Further, each group of conical channels includes a plurality of conical channels, and the plurality of conical channels are respectively arranged on the upper and lower sides of the corresponding first screen.

[0017] Further, the large port of each conical channel is connected to the side surface of the natural enemy breeding box. The small ports of the conical channels are respectively located in the corresponding predatory natural enemy breeding area or parasitic natural enemy breeding area. The caliber of the small port is slightly larger than the body size of small pests. The caliber of the large port is 1-2 mm larger than that of the small port, and the length of the conical channel is 2-3 cm.

[0018] A method for using a device for breeding and synergistically releasing predatory natural enemies and parasitic natural enemies, using the device for breeding and synergistically releasing predatory natural enemies and parasitic natural enemies according to any one of the above, the method comprising the following steps:

[0019] S10. Open the sliding door, put living plants in the natural enemy breeding box, and introduce small pests such as whiteflies through the non-woven fabric sleeve of the circular piston more than 2 times, with an interval of 5-7 days each time;

[0020] S20. Introduce predatory natural enemies of small pests, such as Orius sauteri, into the breeding area of predatory natural enemies, and introduce parasitic natural enemies of small pests, such as Encarsia formosa, into the breeding area of parasitic natural enemies;

[0021] S30. Inject sufficient amount of honey water with a mass fraction of 10% into the water-absorbing sponge of the circular piston to provide sufficient nutrients for natural enemy insects;

[0022] S40. After the natural enemy insects are successfully colonized in the breeding box, transfer and hang them in the field, and place a lure core of small pests under the hanging hook inside the breeding box to attract small pests into the breeding box, providing a food source for natural enemies and hosts required by parasitic wasps;

[0023] S50. When the number of natural enemies in the breeding box multiplies to a certain scale, connect the solar panel and the LED lamp, and utilize the nocturnal phototactic characteristics of natural enemies to accelerate the release of natural enemies from the breeding box.

[0024] Beneficial effects: The device for breeding and synergistically releasing predatory natural enemies and parasitic natural enemies of the present invention has the characteristics of simple operation, low investment and good control effect, can release natural enemies into the control area for a long time, and realizes long-term and effective biological control of the control area.

[0025] In the middle of the breeding box for predatory natural enemies and parasitic natural enemies of the present invention, there is a screen partition, which can separate the predatory natural enemies from the parasitic natural enemies to avoid the predation of parasitic wasps by predators; at the same time, the presence of external predators can stimulate the parasitic wasps to lay eggs and improve their control ability over pests.

[0026] The living plants of the present invention are used to provide spawning sites for small pests such as whiteflies and natural enemies, and to provide hiding spaces for natural enemies, reducing cannibalism and intraspecific interference;

[0027] The screens on the rear, left and right sides of the natural enemy breeding box of the present invention can ensure the ventilation and air permeability of the internal environment of the body, and at the same time facilitate the release and diffusion of sex pheromones of small pests such as whiteflies in the field; the hanging hooks inside the upper part of the natural enemy breeding box can be used to hang sex pheromones of small pests such as whiteflies to attract pests into the inside of the breeding box to provide a food source for natural enemy insects and hosts for egg laying; the conical channels on the sides of the natural enemy breeding box facilitate the entry of small pests such as whiteflies into the breeding box while reducing the number and possibility of small pests such as whiteflies migrating from the breeding box to the field; the solar panel can provide power for the LED light strip, and utilizing the nocturnal phototactic characteristics of natural enemies can accelerate the release of natural enemies from the cage. Brief Description of the Drawings

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 It is a schematic diagram of the structure of the breeding box of the present invention.

[0030] Figure 3 It is the side of the natural enemy breeding box of the present invention;

[0031] Figure 4 It is a schematic diagram of the conical channel structure of the natural enemy breeding box of the present invention.

[0032] Figure 5 It is a schematic diagram of the sliding door structure of the present invention.

[0033] Figure 6 It is a schematic diagram of the circular piston structure of the present invention.

[0034] Figure 7 It is the population dynamics of Bemisia tabaci after being treated by different control methods of the present invention.

[0035] Among them, 1. Hook; 2. Solar panel; 3. LED light strip; 4. Natural enemy breeding box; 41. Screen partition; 42. Suspension hook; 43. Conical channel; 44. First screen, 45. Large port of the conical channel; 46. Small port of the conical channel; 5. Living plant; 6. Sliding door; 61. Movable door; 62. Door handle; 63 - Circular piston; 64. Support ring; 65. Cylindrical hollow rod; 66. Water-absorbing sponge. Specific embodiments

[0036] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0037] This part will describe the specific embodiments of the present invention in detail. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0038] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, 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 cannot be understood as a limitation on the present invention.

[0039] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, while understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or implicitly specifying the sequence relationship of the indicated technical features.

[0040] Example 1

[0041] Reference Figures 1-6 , a device for breeding and co-releasing predatory natural enemies and parasitic natural enemies, comprising: a natural enemy breeding box 4, which is divided into a relatively independent predatory natural enemy breeding area and a parasitic natural enemy breeding area by a screen partition 41 to block predatory natural enemies and parasitic natural enemies, and while stimulating the oviposition of parasitic wasps, avoid the occurrence of intragroup predation (i.e., Orius sauteri preying on whitefly nymphs parasitized by Encarsia formosa), and live plants 5 are placed in both the predatory natural enemy breeding area and the parasitic natural enemy breeding area;

[0042] A conical channel group, which is respectively arranged on the left and right sides of the natural enemy breeding box 4 and is respectively communicated with the predatory natural enemy breeding area and the parasitic natural enemy breeding area, and is used for pests to enter the natural enemy breeding box 4 from the field and the release of natural enemies;

[0043] Two circular pistons 63, both of which are arranged on the front side of the natural enemy breeding box 4 and are respectively communicated with the predatory natural enemy breeding area and the parasitic natural enemy breeding area, and non-woven fabric sleeves are provided on the circular pistons 63 for introducing small pests.

[0044] In this embodiment, a solar panel 2 is arranged on the upper side of the natural enemy breeding box 4, and LED light strips 3 are arranged on both sides of the natural enemy breeding box 4 to attract natural enemy insects to move from the breeding box to the field. The solar panel 2 is electrically connected to a power supply, and the power supply is electrically connected to the LED light strips 3. A hook 1 is arranged on the solar panel 2.

[0045] In this embodiment, the natural enemy breeding box 4 has a cube structure, and the screen partition 41 is arranged in the middle of the natural enemy breeding box 4, and the screen partition 41 has 120 meshes.

[0046] Preferably, the overall natural enemy breeding box 4 has a cube structure with a side length of 40 cm.

[0047] In this embodiment, the upper surface, lower surface, front surface, left and right side surfaces of the natural enemy breeding box 4 are all transparent acrylic plates, and first screens 44 are arranged in the middle of the left and right side surfaces, and the rear surface is arranged as a second screen. Both the first screen 44 and the second screen have 120 meshes.

[0048] Preferably, the length and width of the first screen 44 are both 10 cm;

[0049] In this embodiment, a hanging hook 42 is provided on the top of the natural enemy breeding box 4 for hanging small pest sex pheromones or lures.

[0050] During specific implementation, the hanging hook 42 is pasted on the transparent acrylic board above the natural enemy.

[0051] In this embodiment, a sliding door 6 is provided on the front of the natural enemy breeding box 4. An active door 61 is provided on the sliding door 6. A circular piston 63 is located above the active door 61, and a door handle 62 is provided on the active door 61.

[0052] Preferably, the active door 61 has a width of 15 cm and a height of 25 cm.

[0053] In this embodiment, the circular piston 63 is a cylindrical hollow rod 65. The first end of the cylindrical hollow rod 65 is located outside the natural enemy breeding box 4 and is connected with a support ring 64. The support ring 64 is used for connecting a non-woven fabric sleeve. The second end extends into the natural enemy breeding box 4, and a water-absorbing sponge 66 is wrapped around the outside of the second end.

[0054] Preferably, the diameter of the non-woven fabric sleeve support ring 64 of the circular piston 63 is 10 cm, the diameter of the cylindrical hollow rod 65 is 10 cm, and the length is 5 cm.

[0055] In this embodiment, each conical channel group includes a plurality of conical channels 43, and the plurality of conical channels 43 are respectively arranged on the upper and lower sides of the corresponding first screen 44.

[0056] In this embodiment, the large port 45 of each conical channel is connected to the side of the natural enemy breeding box 4. The small ports 46 of the conical channels are respectively located in the corresponding predatory natural enemy breeding area or parasitic natural enemy breeding area. The caliber of the small port is slightly larger than the body size of small pests, the caliber of the large port is 1-2 mm larger than that of the small port, and the length of the conical channel 43 is 2-3 cm.

[0057] Embodiment 2

[0058] This embodiment is a method for using a device for breeding and co-releasing predatory natural enemies and parasitic natural enemies. Using the device for breeding and co-releasing predatory natural enemies and parasitic natural enemies according to any one of the above, the method includes the following steps:

[0059] S10. Open the sliding door 6, put the living plant 5 into the natural enemy breeding box 4, and introduce small pests such as whiteflies through the non-woven fabric sleeve of the circular piston 63 more than 2 times, with an interval of 5-7 days each time;

[0060] S20. Introduce predatory natural enemies of small pests such as whiteflies, such as Orius strigicollis, into the predatory natural enemy breeding area, and introduce parasitic natural enemies of small pests such as whiteflies, such as Encarsia formosa, into the parasitic natural enemy breeding area;

[0061] S30. Inject sufficient amount of honey water with a mass fraction of 10% into the water-absorbing sponge 66 of the circular piston 63 to provide sufficient nutrients for the natural enemy insects;

[0062] S40. After the natural enemy insects are successfully colonized in the breeding box, transfer and hang them in the field, and place a small pest lure core below the hanging hook 42 inside the breeding box to attract small pests such as whiteflies into the breeding box, providing a food source for the natural enemies and hosts required by the parasitic wasps;

[0063] S50. When the number of natural enemies in the breeding box multiplies to a certain scale, turn on the solar panel 2 and the LED lamp, and utilize the phototaxis characteristics of the natural enemies at night to accelerate the release of the natural enemies from the breeding box.

[0064] Example 3

[0065] Reference Figures 1-7 , in this example, a device for breeding and synergistically releasing predatory natural enemies and parasitic natural enemies provided in Example 1 is used, and the experimental operations are carried out according to the method provided in Example 2. The specific experimental scheme and experimental results are as follows:

[0066] In this example, the test insect sources are whiteflies, Orius strigicollis, and Encarsia formosa collected in Yunnan and continuously bred in the insect rearing room of the College of Plant Protection, Yunnan Agricultural University. They are propagated with kidney bean seedlings to establish a stable test rearing population.

[0067] Experiment 1 (Natural enemy breeding): Set the following treatments: (a) the present invention; (b) a small gauze insect rearing cage, introducing 12 pairs of adult male and female Orius strigicollis or 24 adult Encarsia formosa (Encarsia formosa is parthenogenetic). During this period, provide plant leaves with whitefly nymphs every 2 days (each leaf has about 100 whitefly nymphs, and 2 - 3 leaves are placed each time) and honey water. The petiole of the plant leaf is wrapped with a cotton ball with water; (c) a small gauze insect rearing cage with live host plants, introducing whitefly nymphs twice, each time introducing 20 pairs of adult male and female Bemisia tabaci, with an interval of 7 days, and then introducing 12 pairs of adult male and female Orius strigicollis or 24 adult Encarsia formosa respectively. During this period, supplement honey water every 2 days; (d) a small gauze insect rearing cage with live host plants, introducing whitefly nymphs twice, each time introducing 20 pairs of adult male and female Bemisia tabaci, with an interval of 7 days, and then introducing 12 pairs of adult male and female Orius strigicollis and 24 adult Encarsia formosa, and the two natural enemies can directly contact. Then, count the number of natural enemies on the 7th, 14th, and 21st days after introducing the natural enemies. The counted number of natural enemies is all instars of the same kind of natural enemy. Set 3 replicates for each device.

[0068] The effects of different rearing devices and methods on the number of natural enemies are shown in Table 1. The number of the natural enemy, Aphididae, of the present invention was significantly higher than that of the other devices and methods at 7, 14, and 21 days after breeding (7d: F 3,8 =74.03, P=0.0001; 14d: F 3,8 =50.29, P=0.0001; 21d: F 3,8 =288.54, P=0.0001). This indicates that the breeding box of the present invention separates the predatory natural enemies from the parasitic natural enemies, which can stimulate parasitic wasps to lay eggs to a certain extent, thereby improving the biological control effect. In addition, the research results found that the number of natural enemy insects bred using living plants was higher than that using isolated plant leaves. For example, on the 14th day of breeding, the number of southern flower stink bugs bred using plant leaves was the lowest, at 952.33 heads, while the number of southern flower stink bugs bred using the present invention and other living plants was greater than 960.00 heads.

[0069] Table 1 Effects of different feeding devices and methods on the number of natural enemies

[0070]

[0071] Note: The data in the table are mean ± standard error. Different lowercase letters in the same column indicate that the number of natural enemies at the same time is significantly different between different installation methods (ANOVA, LSD method, P<0.05)

[0072] Experiment 2 (cage prevention effect): Using the above-mentioned device and method, live host plants of green beans were placed in the natural enemy breeding, and whitefly nymphs were introduced twice, each time 20 pairs of male and female adults of whiteflies were introduced, with an interval of 7 days. After that, southern flower stink bugs (12 pairs of male and female adults) were introduced into the left side of the breeding box, and the aphid wasp (24 adults) was introduced into the right side. After 7 days, the device was transferred to a 2.1m*2.1m*2.1m gauze cage test (the bottom of the gauze was buried in the soil and fixed, and there was a zipper as long as 1m on the side of the gauze, and a blank isolation zone of 1.5m was set between each plot. 20 green beans were planted in each plot, with a row spacing of 50cm and a plant spacing of 40cm). The gauze cage test had been inoculated with whitefly adults 4 times in advance, and 40 pairs of male and female adults of whiteflies were introduced each time, with an interval of 5d each time. After placing the device in the gauze cage test, the number of each stage of whitefly was counted every 7 days.

[0073] Population dynamics of Bemisia tabaci after different control methods Figure 6 As shown. During most of the time period of the entire survey period, the number of whiteflies eggs, young nymphs, old nymphs, and adults treated with the control method of the present invention was lower than that of other control methods. After the fifth survey, the number of whiteflies remained at a low level, less than 100 heads / 100cm 2 blade.

[0074] Experiment 3 (field control efficacy): Using the above-mentioned device and method, place living host plants of kidney beans during the breeding of natural enemies, and introduce nymphs of Bemisia tabaci twice, with 20 pairs of male and female adults of Bemisia tabaci introduced each time, with an interval of 7 days between introductions. Then, introduce Orius similis (12 pairs of male and female adults) to the left side of the breeding box and Encarsia formosa (24 adults) to the right side. After 7 days, transfer this device to the field. After release, select 10 plants at fixed points in each plot and label them for investigation. Conduct the investigation once every 7 days, and record the number of natural enemies and whitefly pests on each plant respectively.

[0075] Reduction rate of pest population (%) = [(population density before treatment - population density after treatment) / population density before treatment] × 100

[0076] Control efficacy (%) = [(reduction rate of pest population in treatment plot - reduction rate of pest population in control plot) / (100 - reduction rate of pest population in treatment plot)] × 100

[0077] The control efficacies of different control methods against Bemisia tabaci are shown in Table 2. Among the three control methods, the reduction rate of pest population and corrected control efficacy of the present invention against Bemisia tabaci are the highest within the same time. On the 35th day of the investigation, the reduction rate of pest population of the present invention against Bemisia tabaci is 77.23%, and the corrected control efficacy is 85.45%, which is higher than the corrected control efficacy of only releasing Orius similis (69.25%) and the corrected control efficacy of only releasing Encarsia formosa (66.86%).

[0078] Table 2 Control efficacies of different control methods against Bemisia tabaci

[0079]

[0080] The above test results show that the device and method adopted by the present invention are significantly superior to the traditional methods.

[0081] The breeding device and the co-release method of the present invention can jointly breed and release predatory natural enemies and parasitic wasp natural enemies, improve the biological control effect on pests, and maintain a long-term control efficacy.

[0082] As can be seen from the above embodiments, the screen partition in the breeding box of the present invention can separate predatory natural enemies and parasitic natural enemies. While preventing predators from preying on parasitoid wasps parasitized in the nymphs of small pests such as whiteflies, it can also stimulate the parasitoid wasps to lay eggs, improving the biological control effect of the combined use of the two; the living plants in the breeding box can provide an oviposition substrate and a hiding space for natural enemy insects, reducing the occurrence of intra-specific competition interference and cannibalism behaviors; the screen around the breeding box has air permeability, which is conducive to the spread of sex pheromones of small pests such as whiteflies to attract pests into the breeding box. At the same time, the conical channel on the side of the breeding box can reduce the escape of small pests such as whiteflies that enter the breeding box to the outside of the box; the solar panels and LED strip lights of the present invention utilize the nocturnal phototactic characteristics of natural enemies to accelerate the release of natural enemies from the breeding box; the water-absorbing sponge outside the cylindrical hollow rod in the circular piston device is convenient for adding honey water, and the support ring connecting the cylindrical hollow rod and the non-woven fabric sleeve is convenient for introducing initial pests and natural enemies.

[0083] The device of the present invention can release predatory natural enemies and parasitic natural enemies to the field synergistically while increasing the breeding quantity of natural enemies, and has simple operation and is easy to master, innovating the action mode of biological control and providing strong support for the biological control of whitefly pests.

[0084] The above has described in detail the device, method and results of breeding and synergistic release of predatory natural enemies and parasitic natural enemies. However, with a little adjustment of the method and structure of the present invention, such as the types of predatory natural enemies, the types of parasitic natural enemies, the size of the breeding box, and the insect channels, etc., it is possible to control small insects such as whiteflies and tomato leafminers.

[0085] The above is only a preferred embodiment of the present invention, and does not impose any limitation on the technical scope of the present invention. Therefore, any minor modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An apparatus for breeding and co-releasing predatory natural enemies and parasitic natural enemies, characterized in that, Including: A natural enemy breeding box, which is divided into a relatively independent predatory natural enemy breeding area and a parasitic natural enemy breeding area by a screen partition to separate predatory natural enemies and parasitic natural enemies, avoiding intragroup predation while stimulating the oviposition of parasitic wasps. Living plants are placed in both the predatory natural enemy breeding area and the parasitic natural enemy breeding area. Two conical channel groups, which are respectively arranged on the left and right sides of the natural enemy breeding box and are respectively communicated with the predatory natural enemy breeding area and the parasitic natural enemy breeding area, for pests to enter the natural enemy breeding box from the field and for the release of natural enemies. Two circular pistons, which are both arranged on the front side of the natural enemy breeding box and are respectively communicated with the predatory natural enemy breeding area and the parasitic natural enemy breeding area. Non-woven fabric sleeves are provided on the circular pistons for introducing small pests.

2. The device for breeding and co-releasing predatory natural enemies and parasitic natural enemies according to claim 1, wherein A solar panel is arranged on the upper side of the natural enemy breeding box, and LED light strips are arranged on both sides of the natural enemy breeding box to attract natural enemy insects to move from the breeding box to the field. The solar panel is electrically connected to a power supply, and the power supply is electrically connected to the LED light strips. A hook is arranged on the solar panel.

3. The device for breeding and co-releasing predatory natural enemies and parasitic natural enemies according to claim 1, wherein The natural enemy breeding box is of a cube structure, the screen partition is arranged in the middle of the natural enemy breeding box, and the screen partition is 120 mesh.

4. The device for breeding and co-releasing predatory natural enemies and parasitic natural enemies according to claim 3, characterized in that, The upper, lower, front and left and right sides of the natural enemy breeding box are all made of transparent acrylic plates, and first screens are arranged in the middle of the left and right sides, and a second screen is arranged at the rear. Both the first screen and the second screen are 120 mesh.

5. The device for breeding and co-releasing predatory natural enemies and parasitic natural enemies according to claim 4, characterized in that, Hanging hooks are arranged on the upper surface of the natural enemy breeding box for hanging small pest sex pheromones or lures.

6. The device for breeding and co-releasing predatory natural enemies and parasitic natural enemies according to claim 4, characterized in that, A sliding door is arranged on the front surface of the natural enemy breeding box, a movable door is arranged on the sliding door, the circular piston is located above the movable door, and a door handle is arranged on the movable door.

7. The device for breeding and co-releasing predatory natural enemies and parasitic natural enemies according to claim 6, characterized in that, The circular piston is a cylindrical hollow rod. The first end of the cylindrical hollow rod is located outside the natural enemy breeding box and is connected with a support ring for connecting the non-woven fabric sleeve. The second end extends into the natural enemy breeding box, and a water-absorbing sponge is wrapped on the outside of the second end.

8. The device for breeding and co-releasing predatory natural enemies and parasitic natural enemies according to claim 4, characterized in that, Each conical channel group includes a plurality of conical channels, which are respectively arranged on the upper and lower sides of the corresponding first screen.

9. The device for breeding and co-releasing predatory natural enemies and parasitic natural enemies according to claim 8, characterized in that, The large port of each conical channel is connected to the side of the natural enemy breeding box, and the small ports of the conical channels are respectively located in the corresponding predatory natural enemy breeding area or parasitic natural enemy breeding area. The caliber of the small port is slightly larger than the body size of small pests, the caliber of the large port is 1-2 mm larger than that of the small port, and the length of the conical channel is 2-3 cm.

10. A method for using a device for breeding and co-releasing predatory natural enemies and parasitic natural enemies, characterized in that, Using the device for breeding and synergistically releasing predatory natural enemies and parasitic natural enemies according to any one of claims 1 to 9, the method includes the following steps: S10. Open the sliding door, put living plants in the natural enemy breeding box, and introduce small pests such as whiteflies through the non-woven fabric sleeves of the circular pistons more than 2 times, with an interval of 5-7 days each time. S20. Introduce small pest predatory natural enemies, such as Orius sauteri, in the breeding area of predatory natural enemies, and introduce small pest parasitic natural enemies, such as Encarsia formosa, in the breeding area of parasitic natural enemies; S30. Inject sufficient amount of honey water with a mass fraction of 10% into the water-absorbing sponge of the round piston to provide sufficient nutrients for natural enemy insects; S40. After the natural enemy insects are successfully colonized in the breeding box, transfer and hang them in the field, and place small pest lures under the hanging hooks inside the breeding box to attract small pests into the breeding box, providing a food source for natural enemies and hosts required by parasitic wasps; S50. When the number of natural enemies in the breeding box multiplies to a certain scale, connect the solar panel and the LED lamp, and utilize the night phototaxis characteristics of natural enemies to accelerate the release of natural enemies from the breeding box.

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