Pond snail prevention and control system and method for rice field

Abstract

The present application relates to the technical field of apple snail prevention and control in rice fields, and particularly relates to an apple snail prevention and control system and method for rice fields, aiming to solve the problem that rice seedlings are damaged by apple snails after water is introduced into rice fields. The system comprises a water diversion channel and a branch water pipe leading to the rice field. The water diversion channel and the branch water pipe are both provided with protective nets. The system further comprises a capturing device and a trapping net cage arranged in the rice field. The edge of the rice field is excavated downward to form a channel, and the trapping net cage is arranged in the channel. The capturing device is arranged around the edge of the rice field or close to the protective net. The capturing device and the trapping net cage are both used to trap apple snails. The protective net and the capturing device form two-stage protection of pre-interception and in-field concentrated capture, which can intercept apple snails and large floating debris floating with water before the water enters the rice field, and further trap and capture apple snails entering the rice field through the capturing device and the trapping net cage, thereby reducing the damage to the rice field.

Description

Technical Field

[0001] This invention relates to the field of golden apple snail control technology in rice paddies, and particularly to a golden apple snail control system and method for use in rice paddies. Background Technology

[0002] Golden apple snails are invasive molluscs that have spread widely in various water bodies in recent years. These mollusks feed on crops such as rice seedlings and tender leaves, causing severe damage to rice seedlings during the seedling stage and early transplanting period. This leads to lodging, reduced survival rates, and consequently affects seedling distribution, yield, and quality. Furthermore, golden apple snails have a high reproductive capacity; females typically lay their eggs on vegetation, embankments, or artificial structures above the water surface. Their egg masses are highly durable and adherent, and if not removed promptly, they can easily re-emerge in the next growing season or even within a short period, posing significant challenges to field control.

[0003] Currently, common methods for controlling golden apple snails in rice paddies include the application of chemical agents, biological rearing (such as raising ducks and fish), manual physical cleaning, and various mechanized devices. For example, setting up grids, installing net bags or traps at channels or inlets, and using single bait devices for collection and capture. These existing methods can reduce the density of adults or achieve short-term control in a small area to some extent, but they generally face difficulties in field promotion and long-term maintenance of control effects.

[0004] Problems include difficulty in efficiently intercepting and processing egg masses, easy clogging of devices by duckweed, mud, or debris, and neglecting the influence of the behavior and habits of golden apple snails on the frequency of rice paddy irrigation. Summary of the Invention

[0005] The technical problem to be solved by this invention is that rice seedlings are easily affected by the invasion of golden apple snails after water is introduced into the paddy field. This invention provides a golden apple snail control system and method for paddy fields, which adds a protective net and trapping equipment at the water inlet of the paddy field to attract and capture golden apple snails, thereby reducing the number of golden apple snails in the paddy field and solving the above problem.

[0006] This invention is achieved through the following technical solution:

[0007] A system for controlling golden apple snails in paddy fields includes an irrigation canal and branch pipes leading into the paddy field. Protective nets are installed at the inlets of the irrigation canal and the branch pipes leading into the paddy field. The system also includes capture equipment and a trap net cage installed within the paddy field. A channel is excavated downwards along the edge of the paddy field, and the trap net cage is installed within the channel. The trap net cage includes a cage body, a bait chamber, and a bait box. The cage body has a mesh structure, the bait chamber is located inside the cage body, and a float plate is installed at the bottom of the bait box above the bait chamber. The capture equipment is laid around the edge of the paddy field or positioned near the protective net. Both the capture equipment and the trap net cage are used to trap golden apple snails.

[0008] In the above technical solution, the protective net and the capture equipment form a two-level protection system of pre-interception before entering the paddy field and centralized capture in the field. The protective net can intercept golden apple snails and large floating debris that are carried into the paddy field by the water before the water enters the paddy field. The capture equipment and the trap net cages further attract and capture golden apple snails that have entered the field, reducing the harm to the paddy field. The trap net cages are embedded in the channel and a bait box is set up to provide a low-flow environment that is easy for golden apple snails to stay in, thereby enhancing the attraction efficiency. The bait chamber and the bait box release food sources and contain golden apple snails, further increasing the probability of golden apple snails gathering in the cage.

[0009] Preferably, the capturing device is a capturing basket, the bottom of which is connected to a collecting hopper. The collecting hopper is conical, and a protrusion is provided on the top surface of the collecting hopper. A climbing rod is detachably connected to the protrusion, and the top surface of the climbing rod is much higher than the water level of the paddy field.

[0010] In the above technical solution, the conical collection bucket concentrates the incoming golden apple snails to the bottom and allows them to naturally gather, facilitating fixed-point collection. The climbing rod provides a vertical climbing surface for the golden apple snails, prompting them to rise from the water surface or the collection basket to a position that is easy for manual collection or centralized processing, reducing the probability of escape and re-entry into the water.

[0011] Preferably, the collection basket is surrounded by annular steps, which are spirally arranged along the climbing rod.

[0012] In the above technical solution, the spiral staircase provides continuous and progressive steps for the climbing path, making the climbing behavior more stable and prolonging the residence time of the golden apple snail in the capture structure.

[0013] Preferably, the collection basket has through slots on both sides along its width, and a light shield is hinged to the bottom surface of each of the two through slots. A groove is formed at the end of the light shield away from the through slot, and the groove is used to engage with the climbing rod.

[0014] In the above technical solution, the light-blocking plate forms a local dark area, and by taking advantage of the golden apple snail's tendency to be attracted to the cover or dark light, the snail is guided to the climbing path or left in the collection basket.

[0015] Preferably, the light-shielding plate is connected to the climbing rod on both sides along the length of the groove, a support ring is connected inside the groove, the outer peripheral wall of the support ring is coated with heat-absorbing paint, the end of the refractive plate is bent toward the support ring, the top surfaces of the light-shielding plate and the refractive plate are mirror-polished, and a number of heat-absorbing materials are spaced apart on the bottom surface of the light-shielding plate and the refractive plate near the support ring.

[0016] In the above technical solution, the mirror treatment of the refractive plate changes the direction and distribution of the incident light, so that a light and dark area is formed near the support ring, which enhances the attraction or guidance effect on the golden apple snail.

[0017] Preferably, the collection basket is positioned close to the protective net along its length, and return plates are provided at both ends of the collection basket along its length. The return plates are arc-shaped and their bottoms face the bottom surface of the collection basket.

[0018] In the above technical solution, the arc-shaped design of the return plate can reduce the escape of golden apple snails that have entered the collection basket.

[0019] Preferably, the bottom surfaces of the annular step and the return plate are both corrugated, the arc-shaped top surface of the return plate is a smooth surface, the arc-shaped bottom surface of the return plate is also corrugated, and a through hole is provided on the return plate for threading a traction rope.

[0020] In the above technical solution, the corrugated plate increases surface friction and retention, making it easier for golden apple snails to be guided rather than washed away when passing through or staying. At the same time, the corrugated surface is conducive to the attachment and concentration of egg masses, making them easier to clean.

[0021] Preferably, the top of the climbing rod is provided with a trapping hood, the inside of which forms a trapping channel. The bottom of the trapping hood has several induction holes communicating with the trapping channel. The trapping channel includes an induction section, a transition section, and an isolation section connected in sequence. The induction section is located close to the climbing rod. The transition section is located in the middle of the induction section and the isolation section. The transition section is inclined downward toward the isolation section. An elastic diaphragm is provided inside the induction section. Several bristles are connected to the inner top surface of the transition section. The brush heads of the bristles are inclined toward the isolation section. The isolation section forms a receiving groove downward. A feeding port is provided on the side of the isolation section away from the induction section.

[0022] In the above technical solution, the golden apple snails that climb to the climbing rod can be induced into the trap. After being attracted by the bait placed at the feeding port, they can go to the deeper isolation section and effectively prevent the golden apple snails from returning and isolate them in the containment tank.

[0023] Preferably, the receiving trough is filled with gravel, the filling height of which is less than the depth of the receiving trough, and the upper part of the trapping hood near the receiving trough has a light-transmitting hole, and a transparent window is detachably connected to the light-transmitting hole.

[0024] In the above technical solution, the golden apple snails isolated in the containment tank will eventually be trapped and killed by the absorption of moisture by the dry and hot sand.

[0025] A second aspect of the present invention relates to a method for controlling golden apple snails in paddy fields, which employs the golden apple snail control system for paddy fields described in the first aspect of the present invention to trap golden apple snails, comprising:

[0026] S1. Laying of protective netting for irrigation canals before spring irrigation of paddy fields;

[0027] S2. Apply pesticides in concentrated areas before transplanting rice seedlings;

[0028] S3. During the rice paddy greening period, lay out capture equipment and trap nets to trap golden apple snails;

[0029] S4. Regularly inspect the capture equipment and bait cages;

[0030] S5. Spray pesticides and manually kill golden apple snails or snail eggs during the tillering and jointing stages of rice paddies.

[0031] The above-mentioned technical solution achieves coordinated control through rice paddy cultivation and irrigation, including prevention, centralized trapping, and chemical and artificial remediation during the critical growth period of rice paddies. This reduces the overall snail density throughout the year and limits the frequency and amount of chemical treatment to the necessary critical periods, thus balancing prevention and control effectiveness with ecological risk control.

[0032] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0033] 1. In this invention, by excavating channels in paddy fields and setting up trapping net cages in the channels, the golden apple snails are trapped using bait boxes and bait chambers, thereby reducing the harm to paddy fields;

[0034] 2. In this invention, by setting up a ring-shaped staircase and climbing rod inside the collection basket, the golden apple snail can be induced to climb the climbing rod to lay eggs. At the same time, the collection basket can effectively prevent the golden apple snails that have fallen into the net from escaping, and it is also convenient to clean up the golden apple snails later.

[0035] 3. In this invention, the light-shielding plate and the refractive plate inside the collection basket can refract light, creating multiple light and dark areas inside the collection basket. By taking advantage of the golden apple snail's habit of avoiding strong light, the probability of the golden apple snail escaping is reduced. Attached Figure Description

[0036] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0037] Figure 1 This is a schematic diagram of the paddy field planning in this invention;

[0038] Figure 2 This is a schematic diagram of the structure of the trapping basket in this invention. Figure 1 ;

[0039] Figure 3 This is a schematic diagram of the structure of the trapping basket in this invention. Figure 2 ;

[0040] Figure 4 This is a top view of the trapping basket in this invention;

[0041] Figure 5This is a schematic diagram showing the distribution of the light and dark areas in Embodiment 3 of the present invention;

[0042] Figure 6 A cross-sectional view of the trapping basket in this invention. Figure 1 ;

[0043] Figure 7 A cross-sectional view of the trapping basket in this invention. Figure 2 ;

[0044] Figure 8 This is a schematic diagram of the structure of Embodiment 4 in this invention;

[0045] Figure 9 This is a partial cross-sectional view of Embodiment 4 of the present invention;

[0046] Figure 10 This is a cross-sectional view of the trapping hood in this invention.

[0047] The reference numerals in the attached figures represent:

[0048] 1. Lure cage; 2. Capture basket; 21. Collection hopper; 22. Return plate; 23. Boss; 24. Annular step; 241. Corrugated plate; 3. Light shield; 31. Reflector plate; 32. Support ring; 4. Climbing rod; 5. Capture cover; 51. Induction hole; 52. Feeding port; 61. Induction section; 62. Transition section; 63. Isolation section; 71. Outer diaphragm; 72. Inner diaphragm; 8. Brush. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments and accompanying drawings. The illustrative embodiments and descriptions of this invention are for illustrative purposes only and are not intended to limit the invention. It should be noted that this invention is already in the actual research and development stage.

[0050] Example 1:

[0051] like Figure 1 As shown, this embodiment provides a golden apple snail control system for paddy fields, including an irrigation canal and branch pipes leading into the paddy field. Protective nets are installed at the inlet of the irrigation canal and the inlet of the branch pipes leading into the paddy field. The system also includes a capture device and a trap net cage 1 installed in the paddy field. A channel is dug downwards along the edge of the paddy field, and the trap net cage 1 is installed in the channel. The trap net cage 1 includes a cage body, a bait chamber, and a bait box. The cage body has a mesh structure, the bait chamber is located inside the cage body, and a float is installed at the bottom of the bait box and above the bait chamber. The capture device is laid around the edge of the paddy field or installed close to the protective net. Both the capture device and the trap net cage 1 are used to trap golden apple snails.

[0052] Specifically, in this embodiment, the attracting net cage 1 is used. A channel is dug next to the paddy field to store water. The attracting net cage 1 is laid in the channel. The cage body is a woven net structure with a hollow interior that can be supported by a fixed frame to form a bait chamber. An entrance is provided on the cage body. The bait box is a box-shaped structure with bait placed on top and a float plate detachably connected to the bottom. The float plate can make the bait box float on the water surface. Before laying the attracting net cage 1, bait is added to the bait box to attract golden apple snails. The bait box is then placed in the bait chamber. After laying, the water in the channel seeps into the bait chamber through the net surface of the cage body and the entrance. The bait box floats on the water surface of the bait chamber with the help of the buoyancy of the float plate. Preferably, the height of the cage body should be higher than the maximum liquid level of the channel to leave room for the float plate to float. In addition, duckweed can be placed above the cage body to attract golden apple snails.

[0053] Attracted by duckweed and bait boxes, the golden apple snails will move to the bait chamber. After feeding on the duckweed or being attracted by the bait box, they will fall into the cage, thus completing the capture of the golden apple snails. After the trapping net cage 1 is laid, the trapping situation needs to be observed every week or every few days, and the trapping net cage 1 should be lifted to clean up the trapped golden apple snails and snail eggs.

[0054] Example 2:

[0055] like Figures 1 to 4 , Figure 6 and Figure 7 As shown, the capture device in this embodiment is a capture basket 2. The bottom of the capture basket 2 is connected to a collection bucket 21. The collection bucket 21 is conical. The top surface of the collection bucket 21 is provided with a boss 23. A climbing rod 4 is detachably connected to the boss 23. The top surface of the climbing rod 4 is much higher than the water level of the paddy field.

[0056] like Figures 1 to 4 , Figure 6 and Figure 7 As shown, a ring-shaped staircase 24 is arranged around the inside of the collection basket 2, and the ring-shaped staircase 24 is arranged in a spiral shape along the climbing rod 4.

[0057] like Figures 1 to 4 , Figure 6 and Figure 7 As shown, the capture basket 2 is positioned close to the protective net along its length. Return plates 22 are provided at both ends of the capture basket 2 along its length. The return plates 22 are arc-shaped and their bottoms face the bottom surface of the capture basket 2.

[0058] like Figures 1 to 4 , Figure 6 and Figure 7 As shown, the bottom surfaces of the annular step 24 and the return plate 22 are both corrugated plates 241. The arc-shaped top surface of the return plate 22 is a smooth surface, and the arc-shaped bottom surface of the return plate 22 is also corrugated plate 241. A through hole is provided on the return plate 22, and the through hole is used to thread the traction rope.

[0059] Specifically, the irrigation canal introduces water from the river into the paddy fields. A channel is dug at the irrigation canal, and branch pipes are connected to the channel to the paddy fields on both sides of the irrigation canal. Protective nets are installed at the water inlet of the irrigation canal and at the branch pipes in the paddy fields to initially prevent golden apple snails from entering the paddy fields along the water flow. The collection basket 2 is set close to the protective net in the paddy fields. Preferably, the collection basket 2 has a square structure so that it fits the edge of the paddy fields. The collection basket 2 also has a net structure. The bottom of the collection basket 2 is connected to a collection bucket 21. The collection bucket 21 is used to collect the golden apple snails that have fallen into the net and to increase the weight of the collection basket 2 so that the collection bucket 21 can be inserted into the silt of the paddy fields.

[0060] The center of the collection bucket 21 is integrally connected to a boss 23, and a climbing rod 4 is detachably connected to the boss 23. The height of the climbing rod 4 is much higher than the water surface of the paddy field. An annular step 24 is provided along the inner side wall of the collection basket 2. The annular step 24 is spirally distributed along the climbing rod 4. The top of the annular step 24 is lower than the top surface of the collection basket 2, and the bottom surface of the annular step 24 is higher than the collection bucket 21. The return plates 22 on both sides of the collection basket 2 are also higher than the water surface, and the top surface of the return plate 22 is a smooth surface. The return plate 22 has through holes, which are used to lift the collection basket 2 by passing a traction rope through the through holes. After the collection basket 2 is placed, duckweed can be sown above the collection basket 2 as in embodiment 1, or bait boxes can be placed to attract golden apple snails. After being attracted by the food, the golden apple snails will enter the collection basket 2.

[0061] It should be noted that the golden apple snail is a mollusc, and its movement is usually achieved by relying on its own foot. It moves by climbing in a wave-like motion using muscle contractions and secreted mucus. Therefore, the golden apple snail always needs a surface to attach to and use for leverage to move, rather than swimming in the water by undulating its body like a fish.

[0062] Regarding the capture principle in this embodiment: the duckweed and bait box on the capture basket 2 attract golden apple snails to feed on them. The golden apple snails crawl along the outer surface of the capture basket 2 to the inside. Some of the golden apple snails inside the capture basket 2 fall into the inside while feeding, and some fall into the inside while crawling along one side of the return plate 22. The fallen golden apple snails roll down the annular steps 24 into the collection hopper 21, or fall directly into the collection hopper 21 through the gap between the annular steps 24 and the climbing rod 4. 1. The top surfaces of the annular steps 24 and the return plate 22 are smooth, making it easier for golden apple snails to fall. The bottom surface of the annular steps 24 forms a corrugated plate 241. When golden apple snails located at the bottom of the collection hopper 21 climb upwards, they will choose to climb the climbing rod 4 more often than the rough annular steps 24, based on their habits. In addition, there is a distance between the bottom of the annular steps 24 and the collection hopper 21, making it easier for golden apple snails to choose the climbing rod 4 to climb.

[0063] There are three scenarios for the upward-climbing golden apple snails: First, they climb on the rough surface of the collection basket 2. When they pass the smooth annular steps 24 and climbing rods 4, they can easily change their climbing medium and then switch to climbing the annular steps 24 or climbing rods 4. Second, the golden apple snails climb to the annular steps 24 via the climbing rods 4 or the side wall of the collection hopper 21. As mentioned above, during the climbing process, they are more likely to choose the relatively smooth annular steps 24 or climbing rods 4 and less likely to choose the rough collection basket 2. Since the height of the annular steps 24 is limited and much lower than the bottom of the return plate 22, the golden apple snails climbing along the annular steps 24 are also more likely to transfer to the climbing rods 4 when they reach the top. The last scenario is that the golden apple snails climb all the way up the climbing rods 4.

[0064] The golden apple snail lays its eggs on plant stems, rocks, or hard objects above the water surface, exposing the eggs to the air to avoid predation by aquatic predators. Utilizing this behavior, the golden apple snail climbs up the climbing rod 4 and lays its eggs on the surface of the climbing rod 4 above the water surface before returning to the collection basket 2. Therefore, after the collection basket 2 is placed, the collection equipment can be cleaned every two to three days or once to twice a week to prevent excessive egg masses from adhering to the surface of the climbing rod 4, which would affect subsequent attraction. Preferably, the climbing rod 4 can be made of plastic, lightweight metal, etc. More preferably, bamboo tubes can be used, as the plant characteristics and smooth surface of bamboo tubes can attract more golden apple snails.

[0065] Specifically, the return plate 22 and the annular step 24 work on the same principle, and the bottom is also a corrugated plate 241 structure to prevent some golden apple snails from climbing up the side wall of the collection basket 2 and escaping. The corrugated plate 241 at the bottom of the return plate 22 and the mesh surface of the collection basket 2 are relatively rough, which can effectively prevent the golden apple snails from escaping. In addition, the return plate 22 is bent downward towards the collection basket 2, and the golden apple snails like to climb upward, which can further reduce the probability of escape.

[0066] Example 3:

[0067] like Figures 1 to 7 As shown, this embodiment is a further optimization of the trapping basket 2 based on embodiment 2, which can further improve the probability of trapping golden apple snails and reduce the probability of escape.

[0068] like Figures 1 to 7 As shown, the capture basket 2 has through slots on both sides along the width direction, and the bottom surface of the two through slots is hinged with a light shield 3. The end of the light shield 3 away from the through slot has a groove, which is used to engage with the climbing rod 4.

[0069] like Figures 1 to 7As shown, the light-shielding plate 3 has a refractive plate 31 connected to the climbing rod 4 on both sides along the length of the groove. A support ring 32 is connected inside the groove. The outer peripheral wall of the support ring 32 is coated with heat-absorbing paint. The end of the refractive plate 31 is bent toward the support ring 32. The top surfaces of the light-shielding plate 3 and the refractive plate 31 are both mirror-polished. Several heat-absorbing heats are spaced apart on the bottom surfaces of the light-shielding plate 3 and the refractive plate 31 near the support ring 32.

[0070] Specifically, the top surfaces of the light-shielding plate 3 and the refractive plate 31 are mirror-polished to refract light. One end of the light-shielding plate 3 is hinged to the through groove, and the other end has a groove with a support ring 32 inside. The support rings 32 on both sides are clamped and fixed towards the climbing rod 4.

[0071] Regarding the collection principle in this embodiment: the top surfaces of the light-shielding plate 3 and the refraction plate 31 can reflect light, while the bottom of the light-shielding plate 3, the refraction plate 31 and the return plate 22 can shade and form a dark area. The end of the refraction plate 31 is bent toward the support ring 32. The light reflected by the refraction plate 31 can be reflected on the support ring 32, or on the adjacent return plate 22, or between the opposite refraction plate 31 and the adjacent return plate 22. The light refracted by the refraction plate 31 shines on the collection basket 2 to form a light area. The outer peripheral wall of the support ring 32 is coated with a heat-absorbing material, which can absorb heat and transfer a certain amount of heat to the surrounding climbing rod 4 area.

[0072] It should be noted that the golden apple snail is a nocturnal animal, attracted to weak light and avoiding strong light. In the face of strong light or direct sunlight, it will dive into the water or hide under cover. It is relatively active in low light and dark environments, feeding, migrating or reproducing. However, when laying eggs, the golden apple snail will lay them on a surface above the water where they can be exposed to sunlight, keeping the eggs dry and avoiding underwater predators, and using the heat of the sun to incubate the eggs.

[0073] Based on the habits of the golden apple snail, when the snail climbs to the top of the annular step 24 as in Example 2, multiple light zones will be generated due to the external sunlight and the reflection of the refractive plate 31. To avoid the light, the golden apple snail will hide under the light-shielding plate 3 and the return plate 22. Several heat-absorbing plates are connected below the light-shielding plate 3, which can generate a certain temperature and keep it warm. The heat absorbed by the light-shielding plate 3 is transferred to the support ring 32, and the heat absorbed by the support ring 32 is transferred to the climbing rod 4. Most of the light zones in the trapping basket 2 are generated on the periphery, while the dark zones are mainly concentrated around the climbing rod 4. This can attract the golden apple snails that have been caught to the center of the trapping basket 2, preventing a large number of golden apple snails from escaping.

[0074] Regarding the above implementation method, the effect is particularly obvious on sunny days; on cloudy or rainy days, the dark area formed by the shade plate 3 and the bottom of the reflector plate is always darker than the light in the surrounding light area. Due to the reflection of the refracting plate 31 and the heat absorption effect of the support tube and the heat-absorbing tube, a certain amount of heat can also be generated. The temperature of the climbing rod 4 is more suitable for the golden apple snail to climb and lay eggs in the relatively cold and damp paddy water. In the evening and at night, when the golden apple snail is feeding or reproducing, the heat absorbed by the heat-absorbing tube and the support ring 32 during the day will gradually be transferred and diffused to the climbing rod 4, making the area where the climbing rod 4 is close to the support tube warmer, which makes it easier to induce the golden apple snail to climb and lay eggs.

[0075] In summary, both this embodiment and Example 2 are designed to induce golden apple snails into the collection basket 2, while minimizing the escape of a large number of snails that have fallen into the net. They can also guide the snails that have fallen into the net to the climbing rod 4 to lay eggs or hide under the light-blocking plate 3, making it easier to clean up the hidden snails and the snail eggs during subsequent manual cleaning.

[0076] Example 4:

[0077] like Figures 8 to 10 As shown, a trapping hood 5 is provided at the top of the climbing rod 4. A trapping channel is formed inside the trapping hood 5. Several induction holes 51 communicating with the trapping channel are opened at the bottom of the trapping hood 5. The trapping channel includes an induction section 61, a transition section 62 and an isolation section 63 connected in sequence. The induction section 61 is set close to the climbing rod 4. The transition section 62 is located in the middle of the induction section 61 and the isolation section 63. The transition section 62 is inclined downward toward the isolation section 63. An elastic diaphragm is provided inside the induction section 61. Several bristles are connected to the inner top surface of the transition section 62. The brush heads of the bristles are inclined toward the isolation section 63. The isolation section 63 forms a receiving groove downward. A feeding port 52 is opened on the side of the isolation section 63 away from the induction section 61. The receiving groove is filled with gravel. The filling height of the gravel is lower than the depth of the receiving groove.

[0078] Specifically, the trap 5 has a circular structure with a cylindrical structure at the center of its lower surface, which can be fitted onto the climbing rod 4. The outer surface of the trap 5 is made of frosted material and has several protrusions fixedly connected to it, reducing the probability of the golden apple snail climbing to the trap 5 and thus increasing the probability of the golden apple snail entering the induction hole 51. The induction section 61, the transition section 62, and the isolation section 63 are interconnected. The feeding port 52 of the isolation section 63 can be used to put bait to attract the golden apple snail. The gravel in the container is preferably dry gravel. Preferably, the container also has a water-absorbing sponge placed in it. The water-absorbing sponge is at the same height as the feeding port 52 and is used to absorb the moisture of the gravel and evaporate the moisture through the feeding port 52.

[0079] More preferably, the trapping hood 5 has a light-transmitting hole near the top of the receiving tank, and a transparent window is detachably connected to the light-transmitting hole to allow light to shine into the surface of the gravel in the receiving tank; the elastic diaphragm includes an outer diaphragm 71 and an inner diaphragm 72 connected to the top surface of the trapping channel. The outer diaphragm 71 and the inner diaphragm 72 are of equal length and both are flexible, with a gap between them. The outer diaphragm 71 is located near the feeding port 52, and the thickness of the inner diaphragm 72 is greater than the thickness of the outer diaphragm 71.

[0080] When the golden apple snail is induced to the climbing rod 4 as in Example 2, it will be attracted by the bait at the feeding port 52 and crawl into the trapping channel along the induction hole 51. The golden apple snail first passes through the outer septum 71, which bends towards the inner septum 72. After the golden apple snail passes through the outer septum 71, the outer septum 71 returns to its original shape, preventing the golden apple snail from returning. The same applies when passing through the inner septum 72. If the golden apple snail wants to return after passing through the inner septum 72, it must first pass through the inner septum 72. The inner septum 72 is thicker and will come into contact with the outer septum 71 when it is lifted. Therefore, the golden apple snail needs to lift both the inner septum 72 and the outer septum 71 at the same time to return. The setting of the inner septum 72 and the outer septum 71 can effectively prevent the golden apple snail from returning, and due to the attraction of the bait, the golden apple snail will climb deeper more easily.

[0081] When the golden apple snail passes through the transition section 62, it will pass through the brush 8. The end of the brush 8 is tilted towards the isolation section 63, so it will not prevent the snail from entering. Instead, it will prevent the golden apple snail that has entered the isolation section 63 from returning. When the golden apple snail passes through the brush 8, the brush 8 will remove some mucus from the snail's body. After passing through the tilted transition section 62, the golden apple snail will fall into the containment tank of the isolation section 63. The containment tank contains dry gravel, which greatly affects the golden apple snail's habitat and activity. When the golden apple snail crawls towards the brush 8, it will be prevented from rolling down again. There is a water-absorbing sponge on the other side of the containment tank. The water-absorbing sponge is rough and soft and is not suitable for the golden apple snail to climb. Therefore, most of the golden apple snails will be trapped in the containment tank.

[0082] The golden apple snails trapped in the containment tank will remain on the dry gravel. The gravel will absorb the moisture left by the snails. After the gravel contains a large amount of water, it will be absorbed by the water-absorbing sponge and evaporated through the feeding port 52. After entering the containment tank, some of the mucus on the snails has been removed by the brush 8. Therefore, after losing the protection of the mucus, they will gradually lose their activity on the dry gravel. Preferably, light will shine into the containment tank through a transparent window. The gravel will absorb heat, and the accumulated gravel will not easily lose heat. Golden apple snails are molluscs and amphibians, and cannot easily burrow into the gravel. On the dry and hot gravel, the golden apple snails will lose their activity even faster until they die, thus achieving the goal of trapping and killing them and reducing the harm caused by golden apple snails invading rice fields.

[0083] The trapping cover 5 and the feeding port 52 are replaceable. Preferably, the induction section 61, the transition section 62 and the isolation section 63 are detachable and connected to each other, which facilitates cleaning the golden apple snails inside.

[0084] Example 5:

[0085] A method for controlling golden apple snails in rice paddies, employing a golden apple snail control system for rice paddies provided in Examples 1 to 4 to trap golden apple snails, including:

[0086] S1. Laying of protective netting for irrigation canals before spring irrigation of paddy fields;

[0087] S2. Apply pesticides in concentrated areas before transplanting rice seedlings;

[0088] S3. During the rice paddy greening period, lay out the capture equipment and trap net cage 1 to trap golden apple snails;

[0089] S4. Regularly inspect the capture equipment and bait cages;

[0090] S5. Spray pesticides and manually kill golden apple snails or snail eggs during the tillering and jointing stages of rice paddies.

[0091] In S3, duckweed or bait boxes are placed in the waters where the capture device and the trap cage 1 are located to attract golden apple snails to fall into the capture device or the trap cage 1. The trap basket 2 can induce the golden apple snails that have fallen into the capture device to climb the climbing rod 4, or remain in the trap basket 2.

[0092] In S4, weekly inspections and cleaning of snail eggs and golden apple snails attached to the capture equipment and trap cage 1 are conducted.

[0093] Specifically, by combining prevention, centralized trapping, and chemical and artificial remediation during the critical growth period of rice paddies with rice cultivation and irrigation, a synergistic control approach is achieved. This reduces the overall snail density throughout the year while limiting the frequency and amount of chemical treatment to necessary critical periods, thus balancing prevention and control effectiveness with ecological risk control.

[0094] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A system for controlling golden apple snails in paddy fields, comprising an irrigation canal and branch pipes leading into the paddy field, wherein protective nets are installed at the inlet of the irrigation canal and at the inlet of the branch pipes leading into the paddy field, characterized in that: It also includes capture equipment and a bait cage (1) set in the paddy field. A channel is dug downwards along the edge of the paddy field, and the bait cage (1) is set inside the channel. The bait cage (1) includes a cage body, a bait chamber, and a bait box. The cage body has a mesh structure, the bait chamber is located inside the cage body, and a float is provided at the bottom of the bait box and located above the bait chamber. The capture equipment is laid around the edge of the paddy field or set near the protective netting. Both the capture equipment and the bait cage (1) are made of... To trap golden apple snails; the trapping device is a trapping basket (2), the bottom of which is connected to a collection hopper (21), the collection hopper (21) is conical, and the top surface of the collection hopper (21) is provided with a protrusion (23), on which a climbing rod (4) is detachably connected, the top surface of which is much higher than the water level of the paddy field; the top of the climbing rod (4) is provided with a trapping cover (5), and a trapping channel is formed inside the trapping cover (5), so that... The bottom of the trapping hood (5) is provided with several induction holes (51) communicating with the trapping channel. The trapping channel includes an induction section (61), a transition section (62), and an isolation section (63) connected in sequence. The induction section (61) is located near the climbing rod (4). The transition section (62) is located in the middle of the induction section (61) and the isolation section (63). The transition section (62) is inclined downward toward the isolation section (63). An elastic diaphragm is provided inside the induction section (61). The inner top surface of the transition section (62) is connected with several bristles, the brush heads of the bristles are inclined toward the isolation section (63), the isolation section (63) forms a receiving groove downwards, and a feeding port (52) is opened on the side of the isolation section (63) away from the induction section (61); the receiving groove is filled with gravel, the filling height of the gravel is lower than the depth of the receiving groove, and a light-transmitting hole is opened on the upper side of the trapping hood (5) near the receiving groove, and a transparent window is detachably connected to the light-transmitting hole.

2. The golden apple snail control system for paddy fields according to claim 1, characterized in that: The trapping basket (2) is surrounded by an annular staircase (24), which is spirally arranged along the climbing rod (4).

3. The golden apple snail control system for paddy fields according to claim 1, characterized in that: The capture basket (2) has through slots on both sides along the width direction. The bottom surfaces of the two through slots are hinged with light shields (3). The end of the light shield (3) away from the through slot has a groove, which is used to engage with the climbing rod (4).

4. The golden apple snail control system for paddy fields according to claim 3, characterized in that: The light-shielding plate (3) is connected to the climbing rod (4) on both sides along the length of the groove. A support ring (32) is connected inside the groove. The outer peripheral wall of the support ring (32) is coated with heat-absorbing paint. The end of the refractive plate (31) is bent toward the support ring (32). The top surfaces of the light-shielding plate (3) and the refractive plate (31) are mirror-polished. Several heat-absorbing materials are spaced apart on the bottom surface of the light-shielding plate (3) and the refractive plate (31) near the support ring (32).

5. A golden apple snail control system for paddy fields according to claim 2, characterized in that: The collection basket (2) is set close to the protective net along its length direction. At both ends of the collection basket (2) along its length direction, there are return plates (22). The return plates (22) are arc-shaped and their bottoms face the bottom surface of the collection basket (2).

6. The golden apple snail control system for paddy fields according to claim 5, characterized in that: The bottom surfaces of the annular step (24) and the return plate (22) are both corrugated plates (241). The arc-shaped top surface of the return plate (22) is a smooth surface. The return plate (22) has through holes for threading traction ropes.

7. A method for controlling golden apple snails in rice paddies, characterized in that, The method of trapping golden apple snails using the golden apple snail control system for paddy fields as described in claim 1 includes: S1. Laying of protective netting for irrigation canals before spring irrigation of paddy fields; S2. Apply pesticides in concentrated areas before transplanting rice seedlings; S3. During the rice paddy greening period, lay out capture equipment and trap nets (1) to trap golden apple snails; S4. Regularly inspect the capture equipment and bait cages (1); S5. Spray pesticides and manually kill golden apple snails or snail eggs during the tillering and jointing stages of rice fields; In S3, duckweed or bait boxes are placed in the waters where the capture device and the trap cage (1) are located to attract golden apple snails to fall into the capture device or the trap cage (1). The trap basket (2) can induce the golden apple snails that have fallen into the capture device to climb the climbing rod (4) or remain in the trap basket (2). In S4, the snail eggs and golden apple snails attached to the capture equipment and trap cage (1) are inspected and cleaned weekly.

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