Device for luring wax cicada to spawn intensively and using method thereof

Abstract

The invention belongs to the field of biological prevention and control of forestry pests, and discloses a device for luring wax cicada to spawn intensively and a use method. The egg laying device comprises inner layer egg laying cloth, outer layer egg laying cloth, a top layer and an inner layer, the top layer is bundled on the inner layer egg laying cloth through a binding belt, the inner layer is fixed on the inner layer egg laying cloth through the binding belt, the outer layer egg laying cloth is fixed on the top layer through a drawing pin, the inner layer egg laying cloth, the outer layer egg laying cloth and the top layer are combined to form a cylindrical cover body, and the cylindrical cover body is provided with an opening. The spawning space is obtained. The oviposition device used in the method can efficiently induce the empoasca fruticosa to spawn in a concentrated mode, so that the number of egg masses, laid on host plants, of the empoasca fruticosa is reduced, harm of the empoasca fruticosa in the forest is reduced, and the problem that in a traditional prevention and treatment method, the egg masses are removed through pruning, and pesticide is sprayed in the period when a large number of larvae occur, and consequently forest damage is caused is effectively solved.

Description

Technical Field

[0001] The invention belongs to the field of biological control of forest pests, and particularly relates to a device for inducing wax cicadas to lay eggs in a concentrated manner and a use method thereof. Background Art

[0002] The spotted wax cicada is a common pest that mainly harms plants such as Ailanthus altissima, Chinese toon, and grapes, causing serious damage to garden plants and fruit trees. The nymphs and adults of the spotted wax cicada feed on the sap of the host plant, mainly harming young branches, tender leaves, and buds, causing plant growth retardation and seriously affecting the growth and development of trees. In addition, the excrement of the spotted wax cicada can also cause the occurrence of sooty mold disease, further hindering the photosynthesis of plants. In recent years, the damage caused by the spotted wax cicada to fruit trees, ornamental plants and other plants has continued to intensify, posing a serious threat to agriculture and forestry in China, South Korea and the United States, especially the grape planting industry.

[0003] At present, the prevention and control of wax cicada in China is mainly chemical control. Although chemical control can effectively control pests and diseases in the short term, the harm it brings cannot be ignored. Long-term reliance on chemical pesticides will lead to pest resistance, reduce the effectiveness of pesticides, and even promote the outbreak of pest populations. Pesticides may also have serious effects on other animals, microorganisms, etc., and destroy the ecological balance. Pesticide residues accumulate in agricultural products and enter the food chain, which may eventually cause potential harm to human health and increase the risk of chronic poisoning. Therefore, in modern agriculture and forestry, chemical control should be combined with comprehensive measures such as biological control and physical control to reduce its negative impact.

[0004] Pest traps are tools used to monitor and control pests, and can effectively reduce the damage caused by pests to plants. By using specific devices to induce wax cicadas to lay eggs outside of plants, the number of eggs on host plants can be significantly reduced, thereby effectively reducing the damage caused by wax cicadas to plants.

[0005] Utility model patent CN210928869U discloses a control device for preventing overwintering pests of grape wax cicada. By setting a rubber plate and connecting pipes to operate the feed hopper and rubber plate, it is beneficial to clean the insect eggs. Although this method is environmentally friendly, the control device has a complex structure and requires manual search for wax cicada egg masses one by one during use, which is time-consuming and laborious. In addition, the device has difficulties in handling egg masses at high places, and cannot achieve comprehensive prevention and control. It also has poor application flexibility and limited adaptability. The slide rail and slide groove design of the device may be prone to jamming or wear during long-term use, affecting its stability and service life.

[0006] Utility model patent CN214015639U discloses a trapping ring for spotted wax cicada, which uses ultraviolet spectrum to trap spotted wax cicada. The limbs of the spotted wax cicada can be glued to the tape ring body by sticky insect glue, so that the spotted wax cicada cannot move, thereby achieving trapping. Although the ultraviolet spectrum can be used to trap spotted wax cicada, the device relies on the sticky insect glue of the tape ring body 1 to fix the spotted wax cicada. Once stuck, it cannot be effectively processed or removed, thereby limiting the reusability of the device. Although the fold design of the tape ring body can form a shielding part and a supporting part, this structure may lead to poor stability of the device, which is easy to shift or damage under wind or external force, reducing the effect and durability of use. Due to the limitations of the trapping area and the trapping efficiency, it may not be possible to effectively control the number of pests in a short time, especially when the spotted wax cicada population is large. In addition, the trapping method of the device is prone to mistakenly catch other beneficial insects or natural enemies, such as predatory insects, parasitic wasps, etc. Summary of the invention

[0007] In view of the problems of complex structure, poor application flexibility and low efficiency of existing devices, the present invention proposes a device for inducing concentrated egg-laying of wax cicadas based on the egg-laying habits of wax cicadas. The device effectively induces wax cicadas to lay eggs in a concentrated manner by setting up an egg-laying space with high stability in the forest, thereby improving the prevention and control effect. This technical solution can efficiently induce wax cicadas to lay eggs in a concentrated manner, thereby reducing the number of egg masses laid on host plants, thereby reducing the harm caused by wax cicadas in the forest, and effectively solving the problem of forest damage caused by pruning and removing egg masses and spraying pesticides during the period of large-scale occurrence of larvae in traditional prevention and control methods.

[0008] The technical solution of the present invention is as follows: A device for attracting wax cicadas to lay eggs in a centralized manner comprises an inner layer of egg-laying cloth, an outer layer of egg-laying cloth, a top layer, and an inner layer. The top layer is tied to the inner layer of egg-laying cloth by a cable tie, the inner layer is fixed to the inner layer of egg-laying cloth by a cable tie, the outer layer of egg-laying cloth is fixed to the top layer by a thumbtack, and the inner layer of egg-laying cloth, the outer layer of egg-laying cloth and the top layer are combined to form a cylindrical cover, which is an egg-laying space. The inner layer of egg-laying cloth is fixed to a tree trunk by a Velcro and a cable tie. The Velcro is set at 0.5 cm to 1 cm from the edge of the inner layer of egg-laying cloth, and the cable tie is set at 3 to 5 cm from the bottom edge of the inner layer of egg-laying cloth.

[0009] The inner layer of egg-laying cloth is fixed to the trunk at a height of about 1.5m with Velcro and cable ties, ensuring that the cloth fits the trunk well, simulating the natural environment, so that the spotted wax cicada can lay eggs more easily. The fixing of Velcro and cable ties can ensure that the inner layer of egg-laying cloth is not easy to slide or shift during use, so that the stability of the inner layer of egg-laying cloth can be ensured, and the egg-laying behavior of the spotted wax cicada is not affected by the movement of the cloth. In addition, the position and tightness of the inner layer of egg-laying cloth can be adjusted according to the size and shape of the trunk to achieve the best attraction effect. The inner layer of egg-laying cloth fits tightly with the trunk without leaving any gaps, so that the spotted wax cicada perched on the trunk can climb onto the inner layer of egg-laying cloth from the bottom of the open cover without hindrance.

[0010] The top layer is fixed to the tree trunk 1-2 cm above the edge of the inner layer of egg-laying cloth by a 50 cm long nylon tie, ensuring that there is no gap between the top layer and the inner layer of egg-laying cloth. The excess tie part can be cut off. This design effectively prevents the spotted wax cicada from laying eggs on the bark, but guides it to lay eggs on the inner surface of the inner layer of egg-laying cloth, the inner layer and the top layer.

[0011] The inner layer is fixed to the inner layer of egg-laying cloth by a 50cm long tie. There are two inner layers. The first inner layer is 8-12cm away from the top layer. At the same time, the two inner layers are staggered 8-12cm up and down, respectively wrapping around the left and right sides of the tree trunk. The excess tie can be cut off. The spotted wax cicada tends to lay eggs under the eaves at 180° to the ground. The design of the inner layer effectively increases the surface area available for egg-laying at this angle, thereby attracting more spotted wax cicadas to lay eggs. The two inner layers are staggered half a circle around the tree trunk, leaving enough space for the spotted wax cicada to continue to crawl upwards, so that it can freely find a suitable egg-laying position inside the device.

[0012] The outer layer of egg-laying cloth is fixed to the top layer using a 3 cm long thumbtack. This fixing method can provide strong stability, ensuring that the outer layer of egg-laying cloth is firmly attached to the top layer and is not easy to fall off, thereby ensuring the long-term use and effect of the device. The outer layer of egg-laying cloth and the top layer are combined to form a cylindrical cover body, which provides protection for the spotted wax cicada, prevents them from flying away after entering, and ensures the concentration of egg-laying. A 5-8 cm gap is left on the side of the outer layer of egg-laying cloth. The bottom of the cover body is left empty, and the gap between the cover body and the tree trunk is determined by the thickness of the top layer.

[0013] The length of the inner and outer layers of egg-laying cloth, the top layer and the inner layer can be adjusted according to the trunk diameter at breast height. This design improves the adaptability and practicality of the device, and can be flexibly set according to different tree sizes to ensure maximum attraction of the spotted wax cicada. The egg-laying device can also be adjusted according to the damage in the forest. When the damage is more serious, the width of the inner and outer layers of egg-laying cloth (40-60cm) and the thickness of the top layer and the inner layer (5-10cm) can be increased to expand the egg-laying area on the inner surface of the egg-laying cloth, the top layer and the inner layer, and then the length of the outer layer of egg-laying cloth can be increased to accommodate more egg masses.

[0014] The top layer is fixed on top of the inner egg-laying cloth by cable ties, and combined with the outer egg-laying cloth to form a cover, making the entire device more stable and durable, and not easily displaced or damaged by wind or external disturbances. The stability and waterproofness of the top layer enable the entire device to better adapt to various environmental conditions. After the spotted wax cicada enters the device from the gaps in the outer egg-laying cloth and the bottom of the cover, the closed nature of the cover provides a certain barrier, which not only attracts the spotted wax cicada to the egg-laying cloth, but also prevents the spotted wax cicada from flying away due to external interference after entering. Through this design, the spotted wax cicada can find a suitable egg-laying position in the device, thereby increasing the success rate of egg-laying.

[0015] The egg-laying cloth, as the egg-laying matrix of the wax cicada, has the characteristics of wear resistance, strong friction, softness and non-deformation, avoiding the poor stability caused by a smooth or too soft surface, thereby effectively preventing the wax cicada from being unable to lay eggs on it due to unsuitable materials, and ensuring that the material of the egg-laying cloth can attract the wax cicada to lay eggs on it. Preferably, felt cloth is selected as the material of the egg-laying cloth. The inner and outer egg-laying cloths are made of 2mm thick black felt cloth with a width of 40-60cm. When in use, the inner and outer egg-laying cloths have the same width. The egg-laying cloth is rectangular.

[0016] The top layer, the unfolded material is in the shape of a rectangular strip, which is easy to wrap and fix on the tree trunk, and has excellent water-proof, moisture-proof and shock-proof properties; it has strong toughness and outstanding deformation resistance, and can maintain its shape in the field or field conditions, and is not easily damaged, thereby ensuring the integrity of the cylindrical cover. As a preferred choice, pearl cotton is selected as the top layer material. The top layer material is black pearl cotton, with a width of 10cm and a thickness of 5-10cm. The top layer material is in the shape of a rectangular strip, which is easy to wrap and fix on the tree trunk.

[0017] The inner layer, like the top layer, is made of black pearl cotton. The unfolded material is in a rectangular strip, which is easy to wrap and fix on the tree trunk. The width is 8cm, the thickness is 5-10cm, and the length is half of the top layer. When in use, the thickness of the top layer and the inner layer should be the same. The two inner layers are staggered up and down, and they are wrapped around the left and right sides of the trunk respectively; the distance between the first inner layer and the top layer is 8-12cm, and the distance between the second inner layer and the first inner layer is also 8-12cm.

[0018] The cylindrical cover provides a relatively closed egg-laying space for the wax cicada, which can prevent the wax cicada from flying away after entering the device, and can also prompt it to find a suitable egg-laying position in the device, thereby improving the egg-laying success rate.

[0019] The production and installation process of the spawning device is as follows: Use self-adhesive Velcro and nylon ties to tightly fix the inner layer of egg-laying cloth to the surface of the tree trunk, and use ties to fix the top layer of material to the tree trunk above the inner layer of egg-laying cloth. Then use nylon ties to stagger the two inner layers up and down and fix them on the left and right sides of the inner layer of egg-laying cloth respectively. Then use thumbtacks to fix a circle of outer layer of egg-laying cloth on the outside of the top layer to form a cylindrical cover.

[0020] The inner layer of egg-laying cloth needs to be tightly fixed on the tree body with self-adhesive Velcro and nylon tie; The top layer needs to be fixed to the tree trunk at the top of the inner layer of egg-laying cloth with nylon tie, with no gap between the two; The inner layer needs to be fixed to the inner layer of egg-laying cloth with nylon tie, and the two inner layers are staggered up and down, respectively wrapping around the left and right sides of the tree trunk half a circle; The outer layer of spawning cloth needs to be fixed to the top layer with thumbtacks to form a cylindrical cover; The bottom of the cylindrical cover is open and a gap is left at the side of the outer egg-laying cloth.

[0021] The present invention also provides a method for inducing the spotted wax cicada to lay eggs in a concentrated manner, which adopts the egg-laying device fixed on a tree trunk to induce the spotted wax cicada to lay eggs in a concentrated manner.

[0022] Specifically, during the egg-laying period of the spotted wax cicada, a host tree for laying eggs of the spotted wax cicada, such as Ailanthus altissima, is selected as a tree for setting the egg-laying device, and the egg-laying device is fixed at a height of 1.2-1.8 m on the trunk; Specifically, the cloth is cut to a suitable length according to the trunk's diameter at breast height; Optionally, after the cricket has finished laying eggs, the outer egg-laying cloth is removed and the egg masses are collected and used for subsequent processing or disposal.

[0023] The present invention further provides an application of the egg-laying device in preventing and controlling wax cicadas. Specifically, the egg-laying device is fixed on a tree trunk to induce wax cicadas to lay eggs in a concentrated manner, and the egg-laying device is processed after the egg-laying is completed to reduce the damage to trees caused by wax cicadas.

[0024] The beneficial effects of the present invention are: ① The materials are easy to obtain, the structure is simple, and it is easy to assemble. The present invention uses easily available materials and a simple structural design, making the production and assembly process more efficient and low-cost. This design not only reduces the difficulty of purchasing raw materials, but also makes the device more operable and has lower production costs in practical applications.

[0025] ② Efficiently induce the spotted wax cicada to lay eggs in a concentrated manner, reducing the number of egg masses on the host plant. The egg-laying device of the present invention can effectively attract the spotted wax cicada to lay eggs in a concentrated manner through a reasonable structure and an inducement mechanism. Since the wax cicada is more inclined to lay eggs in the device, the use of the device can greatly reduce the number of egg masses of the spotted wax cicada on the host plant, thereby reducing the harm to the plant and reducing the degree of harm caused by the spotted wax cicada in the forest.

[0026] ③ Improve work efficiency. The egg-laying device of the present invention can collect the egg masses laid on the top layer, the inner layer and the egg-laying cloth in a centralized manner and achieve efficient destruction, saving the time and labor costs of processing and destroying the egg masses of the spotted wax cicada one by one, and has the advantages of convenient egg collection operation and high collection efficiency.

[0027] ④High stability and strong adaptability. Through clever design, the cylindrical cover and the inner layer are combined to create an effective egg-laying environment for the wax cicada. The design of the inner layer increases the egg-laying area at an angle of 180° to the ground. The design of two staggered inner layers wrapped around the left and right sides of the tree trunk can not only increase the surface area for the wax cicada to lay eggs, but also leave enough space for the wax cicada to continue to crawl upwards, so that it can freely find a suitable egg-laying position inside the device, improving the overall use effect of the device. The combination of the closedness of the cover and the gap design can not only ensure the high egg-laying success rate of the wax cicada, but also ensure the stability and adaptability of the device, so that it can be used for a long time under different environmental conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 : Spawning cloth, top layer and inner layer structure; Figure 2 : The internal structure of the spawning device; Figure 3 : The complete structure of the spawning device; Figure 4 : Application of oviposition devices on trees.

[0029] Description of reference numerals: inner layer spawning cloth 1, outer layer spawning cloth 2, top layer 3, inner layer 4, Velcro 5, cable tie 6, thumbtack 7. DETAILED DESCRIPTION

[0030] In order to more clearly explain the purpose, technical solutions and advantages of the present invention, the following will be described in detail with reference to the accompanying drawings and specific embodiments. The accompanying drawings show only exemplary embodiments of the present invention and are not intended to limit its implementation. The present invention can be implemented in various forms, and its design concept and core technology are not limited by the embodiments shown in the accompanying drawings. The purpose of providing these embodiments is to make it easier for technicians to understand the principles, structures and functions of the present invention, so as to better grasp and apply its technical solutions. The terms used in this specification are only used to describe specific embodiments and do not constitute a limitation on the present invention.

[0031] Embodiment 1:

[0032] See attached Figure 1-3 A device for attracting wax cicadas to lay eggs in a concentrated manner comprises an inner layer of egg-laying cloth 1, an outer layer of egg-laying cloth 2, a top layer 3, and an inner layer 4. The top layer 3 is tied to the inner layer of egg-laying cloth 1 by a cable tie 6, the inner layer 4 is fixed to the inner layer of egg-laying cloth 1 by a cable tie 6, and the outer layer of egg-laying cloth 2 is fixed to the top layer 3 by a thumbtack 7. The inner layer of egg-laying cloth 1, the outer layer of egg-laying cloth 2, and the top layer 3 are combined to form a cylindrical cover, which is an egg-laying space. Velcro 5 and cable tie 6 are used to fix the inner layer of egg-laying cloth 1 to a tree trunk. The Velcro is set at 0.5cm-1cm from the edge of the inner layer of egg-laying cloth, and the cable tie is set at 3-5cm from the bottom edge of the inner layer of egg-laying cloth.

[0033] The inner layer egg-laying cloth 1 and the outer layer egg-laying cloth 2 are made of 2mm thick black felt cloth with a width of 40-60cm. When in use, the inner layer egg-laying cloth 1 and the outer layer egg-laying cloth 2 have the same width. The egg-laying cloth is rectangular.

[0034] The top layer 3 material is black pearl cotton, with a width of 10cm and a thickness of 5-10cm. The top layer 3 material is in the shape of rectangular strips, which are easy to wrap and fix on the tree trunk.

[0035] The material of the inner layer 4 is 8cm wide black pearl cotton, 5-10cm thick, half the length of the top layer, and rectangular strip. There are two inner layers, staggered up and down, wrapping around the left and right sides of the trunk respectively; the distance between the first inner layer and the top layer is 8-12cm, and the distance between the second inner layer and the first inner layer is also 8-12cm.

[0036] The production and installation process is as follows: First, the inner layer of egg-laying cloth 1 is tightly fixed to the surface of the tree trunk with Velcro 5 and cable ties 6, and the top layer 3 is fixed to the tree trunk 1-2 cm above the edge of the inner layer of egg-laying cloth 1 with cable ties 6, and then the two inner layers 4 are staggered 8 cm-12 cm up and down with cable ties 6, and are fixed to the left and right sides of the inner layer of egg-laying cloth respectively, and the first inner layer is 8-12 cm away from the top layer, and then a circle of outer layer of egg-laying cloth 2 is fixed on the outside of the top layer 3 with thumbtacks 7, so as to form a cylindrical cover. A gap of 5-8 cm is set on the side of the outer layer of egg-laying cloth 2 to allow the spotted wax cicada to enter the device, but due to the relative closedness of the top layer 3 and the outer layer of egg-laying cloth 2, it is effectively prevented from flying away again after entering.

[0037] Example 2: During the egg-laying period of the wax cicada, a forest of Ailanthus altissima in Daxing District, Beijing, which was damaged by the wax cicada, was selected, and trees with upright trunks and similar diameters at breast height were selected to install the egg-laying device ( Figure 4 ). The egg-laying cloth does not need to distinguish between the front and back sides, and the cloth of appropriate length is cut according to the trunk diameter at breast height. At a height of about 1.5 meters from the ground, the device of Example 1 is used, and a total of 3 egg-laying devices are set.

[0038] After the egg-laying device is installed, the spotted wax cicada enters the cover through the space at the bottom of the cover or the gap of the outer egg-laying cloth. After entering the cover, the spotted wax cicada can find a suitable area to lay eggs. After 2 months, the spotted wax cicada completes egg-laying, removes the thumbtacks that fix the outer egg-laying cloth, disassembles the outer egg-laying cloth and collects the egg masses. A total of 116 egg masses were collected by the three devices, and the number of egg masses that were not laid in the device was 1, and the induced centralized egg-laying rate was as high as 99%. The egg masses can be peeled off from the material with appropriate tools and collected for centralized treatment.

[0039] Example 3: During the egg-laying period of the wax cicada, a mixed forest in Haidian District, Beijing was selected, and Ailanthus altissima and other host trees for the egg-laying of the wax cicada were selected as trees for setting the egg-laying device. The diameters at breast height of different tree species vary greatly (15-45cm), and cloth of appropriate length is cut according to the diameters at breast height of the tree trunks. At a tree trunk about 1.5 meters above the ground, the device of Example 1 was used, and a total of 3 egg-laying devices were set. After 2 months, the wax cicada completed egg-laying, the thumbtacks fixing the outer egg-laying cloth were removed, the outer egg-laying cloth was disassembled and the egg masses were collected. A total of 560 egg masses were collected by the 3 devices, and the number of egg masses not laid in the device was 3, and the induced concentrated egg-laying rate was as high as 99%.

[0040] According to the above examples, it can be seen that the centralized egg-laying rate and egg mass collection efficiency of the spotted wax cicada can be significantly improved by using the device for inducing the concentrated egg-laying of the spotted wax cicada according to the present invention. By reasonably setting the egg-laying device, the spotted wax cicada can be accurately guided to lay eggs in a centralized manner, avoiding the scattered egg masses on the host plant, and greatly improving the efficiency of egg-laying management. Whether it is for trees with different breast diameters or in a variety of woodland environments, the material length can be flexibly adjusted to ensure the appropriate gap between the cover body and the trunk to meet the egg-laying needs of the spotted wax cicada. Through application in different regions and different tree species, the present invention can achieve a centralized egg-laying rate of up to 99%, significantly improving work efficiency and reducing labor costs. The device has significant advantages in the prevention and treatment of the spotted wax cicada, and can effectively guide the concentrated egg-laying of the spotted wax cicada, facilitating the efficient collection and processing of subsequent egg masses.

[0041] Finally, we need to emphasize that the embodiments provided here are only part of the embodiments of the present invention, not all of them. Based on the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

Claims

1. A device for attracting wax cicadas to lay eggs, characterized by: It comprises an inner spawning cloth, an outer spawning cloth, a top layer and an inner layer. The top layer is tied to the inner spawning cloth by cable ties, the inner layer is fixed to the inner spawning cloth by cable ties, the outer spawning cloth is fixed to the top layer by thumbtacks, and the inner spawning cloth, the outer spawning cloth and the top layer are combined to form a cylindrical cover, which is the spawning space.

2. The egg-laying device according to claim 1, characterized in that: The inner spawning cloth is fixed to the tree trunk by adhesive tapes such as Velcro and cable ties, and the fixing position is 1.2-1.8m high on the tree trunk; the Velcro is set at 0.5cm-1cm from the edge of the inner spawning cloth, and the cable tie is set at 3-5cm from the bottom edge of the inner spawning cloth.

3. The egg-laying device according to claim 1, characterized in that: The inner and outer spawning cloths are made of felt cloth; the inner and outer spawning cloths are made of 2mm thick rectangular felt cloth with a width of 40-60cm.

4. The egg-laying device according to claim 1, characterized in that: The top layer material is made of pearl cotton with a width of 8-12cm and a thickness of 5-10cm. The top layer is in the shape of a rectangular strip, which is convenient for winding and fixing on the tree trunk; the top layer is set 1-2cm from the top edge of the inner layer of egg-laying cloth.

5. The egg-laying device according to claim 1, characterized in that: The inner layer material is made of pearl cotton, with a width of 6-10cm, a thickness of 5-10cm, and half the length of the top layer. There are two inner layers, which are staggered up and down and wrap around the left and right sides of the trunk half a circle respectively; the first inner layer is 8-12cm away from the top layer, and the second inner layer is 8-12cm away from the first inner layer.

6. The egg laying device according to claim 1, characterized in that: The bottom of the cylindrical cover is open and a 5-8 cm gap is left on the side of the outer egg-laying cloth.

7. The method for using the egg-laying device according to any one of claims 1 to 6, characterized in that: First, use adhesive tape and cable ties to tightly fix the inner layer of egg-laying cloth to the surface of the tree trunk, use cable ties to fix the top layer to the tree trunk 1-2 cm above the edge of the inner layer of egg-laying cloth, and then use cable ties to stagger the two inner layers up and down and fix them on the left and right sides of the inner layer of egg-laying cloth respectively. The first inner layer is 8-12 cm away from the top layer, and the second inner layer is 8-12 cm away from the first inner layer. Then, a circle of outer layer of egg-laying cloth is fixed on the outside of the top layer to form a cylindrical cover; a 5-8 cm gap is set on the side of the outer layer of egg-laying cloth.

8. A method for inducing the spotted wax cicada to lay eggs in a concentrated manner, characterized in that: The invention adopts an egg-laying device as claimed in any one of claims 1 to 6 fixed on a tree trunk to induce wax cicadas to lay eggs in a concentrated manner.

9. The method according to claim 8, characterized in that During the egg-laying period of the spotted wax cicada, a host tree for laying eggs of the spotted wax cicada, such as Ailanthus altissima, is selected as a tree for setting the egg-laying device, and the egg-laying device is fixed at a height of 1.2-1.8 m on the trunk; Specifically, the cloth is cut to a suitable length according to the trunk's diameter at breast height; Optionally, after the cricket has finished laying eggs, the outer egg-laying cloth is removed and the egg masses are collected and used for subsequent processing or disposal.

10. Use of the egg-laying device as described in any one of claims 1 to 6 in preventing and controlling wax cicadas, specifically, by fixing the egg-laying device on a tree trunk to induce wax cicadas to lay eggs in a concentrated manner, and treating the cicadas after the egg-laying is completed to reduce the damage to trees caused by wax cicadas.

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