System and method for intercropping sepia pharaonis in babylonia areolata culture pond

Abstract

The invention discloses a system and method for intercropping sepia pharaonis in a babylonia areolata culture pond, a long storage frame is installed at one end of the top of a square cement culture pond, a folding protective net is embedded in the long storage frame, and a movable stretching long plate is installed at the position, located on one side of the long storage frame, of the top end of the square cement culture pond; the folding protective net is used for covering the top of the square cement culture pond, the interception and protection effects are achieved, pharaoh cuttlefish in water is prevented from jumping out, falling to the bottom face and stranding to cause casualties, and feeding can be directly conducted on the folding protective net; food can penetrate through the folding protective net to enter the square cement culture pond, the safety in the culture and feeding process is improved, the folding protective net can be stretched, unfolded and stored through mutual cooperation of the underwater propeller and the movable stretching long plate, and the control mode of the folding protective net is simple and convenient.

Description

Technical Field

[0001] This invention relates to the field of aquaculture technology, specifically to a system and method for polyculturing tiger squid in a pond containing the spotted roe snail. Background Technology

[0002] The spotted snail (Oriental spar snail) is a high-quality shellfish favored by consumers, especially in the southern market. It is relatively large, grows quickly, and has a farming cycle of six to eight months, giving it high economic value. It is mainly farmed in industrialized facilities in coastal areas of Guangdong, Guangxi, Hainan, and parts of Fujian. The traditional farming method involves tightly laying a 10cm high layer of perforated plastic sieve at the bottom of a square cement tank. Inside the tank, a 40-mesh sieve bag of the same size as the tank is hung, and a 10cm thick layer of fine sand is laid at the bottom of the bag. Filtered seawater is then added to the tank to maintain a water level of about 40cm. Spotted snail larvae are then introduced into the tank at a density of approximately 2000 larvae / m². 2 In traditional farming, fresh fish are the primary feed, fed twice daily in flowing water, with a daily water exchange volume approximately five times the water volume. However, traditional farming methods for the spotted whelk are mostly monoculture, and its lifestyle involves burrowing, with its shell completely buried in the sand, only emerging to feed. Therefore, whelk farming utilizes only the bottom layer of the pond, leaving the water space above the sand layer largely unused.

[0003] Tiger squid is also a marine organism with high economic value. Its natural distribution is mainly in the South China Sea. It is characterized by its large size, tender and delicious flesh, rich nutrition, high feed conversion rate, strong disease resistance, and rapid growth; it generally reaches marketable size in 3-4 months of farming. However, tiger squid is not suitable for high-density, intensive farming. Individuals are prone to fighting and competing for food, and are easily injured during these fights. Once injured, they do not heal, resulting in a very high mortality rate. Furthermore, low-density farming of tiger squid as a single species negatively impacts the industry's profitability, thus hindering its effective promotion and development.

[0004] This invention provides a method for polyculturing tiger squid in a pond containing the spotted worm snail, making full use of the water space above the sand layer in the pond to achieve a low density (2-3 snails / m²). 2 Co-culturing tiger squid. Tiger squid are characterized by their tendency to only move when searching for and hunting food. After feeding, they rest quietly at the bottom of the water. They are not demanding in terms of water depth and do not affect the bottom-dwelling snails. Therefore, co-culturing tiger squid at low density within traditional snail-rearing ponds can fully utilize the upper layer of space. Without increasing land, facilities, equipment, or labor input, an additional 2 kg / m² of tiger squid can be added during simultaneous harvesting with the snails.2 This can effectively increase the output value per unit area by about 20%. Summary of the Invention

[0005] This invention provides a system and method for polyculturing tiger squid in a pond containing the square-spotted roe snail, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a system and method for polyculturing tiger squid in a square cement culture pond, comprising a square cement culture pond, wherein a grid plate is installed at the bottom of the square cement culture pond, a drainage pipe is installed at the bottom end of the square cement culture pond below the grid plate, a water inlet pipe is installed inside the square cement culture pond, and a safety anti-jump mechanism is provided at the top of the square cement culture pond. The safety anti-jump mechanism includes a long frame for storage. A long storage frame is installed at one end of the top of the square cement aquaculture pond, and a folding protective net is embedded inside the long storage frame; A movable stretching plate is installed at the top of the square cement aquaculture pond, located on one side of the long storage frame. A sealed waterproof box is installed in the middle of the movable stretching plate. A drive motor is installed inside the sealed waterproof box. A rotating block is connected to the output end of the drive motor. A mounting frame is connected to the bottom end of the rotating block. An underwater thruster is installed at the bottom of the mounting frame. The bottom of both ends of the movable stretching plate is connected to a moving block. The top of the square cement aquaculture pool is equipped with a guide frame on both sides. The top of the guide frame is provided with a guide groove. The middle of the square cement aquaculture pool away from the storage frame is equipped with a pusher storage frame.

[0007] According to the above technical solution, the movable stretching plate is connected to one end of the folded protective net, the movable block is movably embedded in the interior of the guide groove, and the movable stretching plate and the guide frame are slidably connected through the movable block and the guide groove.

[0008] According to the above technical solution, the underwater thruster and the thruster storage frame are located on the same vertical plane, and the bottom horizontal plane of the underwater thruster is higher than the bottom horizontal plane of the inside of the thruster storage frame.

[0009] According to the above technical solution, one end of the mounting frame is connected to an extension frame, and the bottom of the extension frame is connected to a protective water-permeable frame. A positioning block is installed at one end of each of the two guide frames, and a positioning screw hole is opened in the middle of the positioning block. Both ends of the movable stretching plate are connected to extension blocks, and an installation sleeve is installed in the middle of the extension block. A positioning stud is installed in the middle of the installation sleeve.

[0010] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a scientific and reasonable structure and is safe and convenient to use. 1. Equipped with a safety anti-jump mechanism, the top of the square cement aquaculture pond is covered by a folding protective net, which acts as an interception and protection mechanism to prevent the tiger squid from jumping out of the water and falling to the bottom and getting stranded, resulting in injury or death. Feeding can be done directly on the folding protective net, and the food will pass through the folding protective net into the square cement aquaculture pond, improving the safety of the breeding and feeding process. The underwater propulsion device and the movable extension plate work together to extend, open and retract the folding protective net, making the control of the folding protective net simple. Simultaneously, the interaction between the drive motor and the rotating block adjusts the orientation of the underwater thruster, allowing the same underwater thruster to move in both forward and backward directions. The adjustment method is simple, and the thruster storage frame accommodates the underwater thruster, enabling the folding protective net to completely cover the top of the square cement aquaculture pond, reducing the occurrence of gaps in the cover.

[0011] 2. The combined use of the moving block and the guide frame guides and limits the movement of the extended plate, improving its stability. It also limits the forward propulsion of the underwater thruster, preventing it from tilting during its movement and causing the folding protective net to fail to unfold and retract properly. At the same time, the positioning studs and positioning blocks work together to lock the position of the movable stretching plate, which improves the idle stability of the movable stretching plate and prevents the underwater thruster from shaking and shifting due to water ripples after the folded protective net is unfolded, thus preventing gaps in the cover.

[0012] 3. By using the extension frame and the protective permeable frame in combination, the propeller blades of the underwater thruster are covered and protected, which improves the safety of the underwater thruster and prevents the tiger squid from colliding with and damaging the propeller blades when the underwater thruster is propelled forward, thus extending the service life of the equipment.

[0013] 4. An auxiliary feeding mechanism is provided. By cooperating with an electric telescopic rod and a rotary motor, the position of the vibrator can be adjusted by rotation and lifting. This allows the height and position of the vibrator to match the position of the folded protective net. The vibrator drives the folded protective net to vibrate together, which helps to shake off some of the food residue on the surface of the folded protective net during feeding. This allows the remaining food to fall into the square cement breeding pond for feeding, reducing food waste. At the same time, during the vibration process, the arc-shaped protective rubber block is tightly attached to the folded protective net, which plays a protective role for the folded protective net. The flexible material itself makes flexible contact, which greatly reduces the probability of damage to the folded protective net. The guide cylinder guides the lifting of the lifting plate, making the lifting process of the vibrator more stable. At the same time, the position of the vibrator is adjusted according to the feeding and unfolding / retraction state of the folded protective net, preventing the vibrator from obstructing the unfolding and retraction of the folded protective net.

[0014] In summary, by combining a safety anti-jumping mechanism with an auxiliary feeding mechanism, and using a folding protective net to cover the surface of the square cement aquaculture pond, the tiger squid raised in the pond are protected, preventing them from jumping out of the water and reducing the probability of death caused by jumping out of the water, thus reducing losses during the aquaculture process. At the same time, the use of a vibrator to vibrate and swing the folding protective net allows any food residue caused by spilled food to fall smoothly into the water, reducing food waste. Both of these measures improve and compensate for the economic losses incurred during the aquaculture process, significantly enhancing the overall economic efficiency of the aquaculture. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the mounting structure of the rotary motor of the present invention; Figure 3 This is a schematic diagram of the installation structure of the folded protective net of the present invention; Figure 4 This is a schematic diagram of the structure of the safety anti-jump mechanism of the present invention; Figure 5 This is a schematic diagram of the installation structure of the protective permeable frame of the present invention; Figure 6 This is a schematic diagram of the auxiliary feeding mechanism of the present invention; Figure 7 This is a flowchart of the method of the present invention; The diagram is labeled as follows: 1. Square cement aquaculture pond; 2. Fence; 3. Drainage pipe; 4. Water inlet pipe; 5. Safety anti-jump mechanism; 501. Storage frame; 502. Folding protective net; 503. Movable and extendable long plate; 504. Sealed waterproof box; 505. Drive motor; 506. Rotating block; 507. Mounting bracket; 508. Underwater thruster; 509. Moving block; 510. Guide frame; 511. Guide groove; 512. Thruster storage frame; 513. Extension frame; 514. Protective permeable frame; 515. Positioning block; 516. Positioning screw hole; 517. Extension block; 518. Mounting sleeve; 519. Positioning stud; 6. Auxiliary feeding mechanism; 601. Mounting plate; 602. Fixing box; 603. Rotary motor; 604. Rotating connecting plate; 605. L-shaped fixing frame; 606. Electric telescopic rod; 607. Lifting plate; 608. Vibrator; 609. Connecting block; 610. Arc-shaped protective rubber block; 611. Guide cylinder; 612. Limiting block; 613. Counterweight block. Detailed Implementation

[0017] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0018] Example: Figure 1-6 As shown, the present invention provides a technical solution, a system for polyculturing tiger squid in a square cement culture pond, including a square cement culture pond 1, a grid plate 2 installed at the bottom of the square cement culture pond 1, a drain pipe 3 installed at the bottom end of the square cement culture pond 1 below the grid plate 2, a water inlet pipe 4 installed inside the square cement culture pond 1, and a safety anti-jump mechanism 5 set at the top of the square cement culture pond 1. The safety anti-jump mechanism 5 includes a storage frame 501, a folding protective net 502, a movable and stretchable long plate 503, a sealed waterproof box 504, a drive motor 505, a rotating block 506, a mounting bracket 507, an underwater thruster 508, a moving block 509, a guide frame 510, a guide groove 511, a thruster storage frame 512, an extension frame 513, a protective permeable frame 514, a positioning block 515, a positioning screw hole 516, an extension block 517, a mounting sleeve 518, and a positioning stud 519. A long storage frame 501 is installed at one end of the top of the square cement aquaculture pond 1, and a folding protective net 502 is embedded inside the long storage frame 501; A movable stretching plate 503 is installed at the top of the square cement aquaculture pond 1, located on one side of the storage frame 501. The movable stretching plate 503 is connected to one end of the folding protective net 502. A sealed waterproof box 504 is installed in the middle of the movable stretching plate 503. A drive motor 505 is installed inside the sealed waterproof box 504. A rotating block 506 is connected to the output end of the drive motor 505. A mounting frame 507 is connected to the bottom end of the rotating block 506. An underwater thruster 508 is installed at the bottom of the mounting frame 507. Movable blocks 509 are connected to the bottom of both ends of the movable stretching plate 503. Guide frames 510 are installed on both sides of the top of the square cement aquaculture pond 1. A guide groove 511 is opened in the middle of the top of the guide frame 510. The movable blocks 509 are movably embedded in the interior of the guide groove 511. The movable stretching plate 503 and the guide frame 510 are slidably connected by the movable blocks 509 and the guide groove 511. A thruster storage frame 512 is installed at the middle end of the square cement aquaculture pond 1 away from the storage frame 501. The underwater thruster 508 and the thruster storage frame 512 are located on the same vertical plane. The bottom of the underwater thruster 508 is at a horizontal height of... The height is higher than the horizontal plane at the bottom of the inside of the thruster storage frame 512. The top of the square cement aquaculture pond 1 is covered by the folding protective net 502, which plays a role in interception and protection, preventing the tiger squid in the water from jumping out and falling to the bottom and getting stranded, resulting in injury or death. Feeding can be done directly on the folding protective net 502. The food will pass through the folding protective net 502 and enter the inside of the square cement aquaculture pond 1, which improves the safety of the breeding and feeding process. The underwater thruster 508 and the movable extension plate 503 work together to stretch, open and close the folding protective net 502. The control method of the folding protective net 502 is simple. At the same time, the interaction between the drive motor 505 and the rotating block 506 adjusts the orientation of the underwater thruster 508, so that the same underwater thruster 508 can be used to move in both the front and rear directions. The adjustment method is simple. The thruster storage frame 512 accommodates the underwater thruster 508, so that the folding protective net 502 can completely cover the top of the square cement aquaculture pond 1, reducing the occurrence of gaps in the cover. One end of the mounting bracket 507 is connected to an extension bracket 513, and the bottom of the extension bracket 513 is connected to a protective permeable frame 514. The protective permeable frame 514 is located on one side of the underwater thruster 508 and covers the surface of the propeller blade at one end of the underwater thruster 508. A positioning block 515 is installed at one end of each of the two guide frames 510. A positioning screw hole 516 is opened in the middle of the positioning block 515. Both ends of the movable stretching plate 503 are connected to extension blocks 517. An installation sleeve 518 is installed in the middle of the extension block 517. A positioning stud 519 is installed in the middle of the installation sleeve 518. The positions of the positioning block 515 and the positioning stud 519 correspond to each other. The installation sleeve 518 and the positioning stud 519 are connected by threads. By using the cooperation of the movable block 509 and the guide frame 510, the movable stretching plate 503 is guided and limited, which improves the movement stability of the movable stretching plate 503. At the same time, it also limits the forward propulsion of the underwater thruster 508, preventing it from tilting during forward movement and causing the folding protective net 502 to be unable to unfold and be stored normally. At the same time, the positioning studs 519 and positioning blocks 515 work together to position and lock the position of the movable stretching plate 503, which improves the idle stability of the movable stretching plate 503 and prevents the underwater thruster 508 from shaking and shifting due to water ripples after the folded protective net 502 is unfolded, thus preventing gaps in the cover. The extension frame 513 and the protective permeable frame 514 work together to cover and protect the propeller blades of the underwater thruster 508, which improves the safety of the underwater thruster 508 and prevents the tiger squid from hitting and damaging the propeller blades when the underwater thruster 508 is propelled forward, thus increasing the service life of the equipment. An auxiliary feeding mechanism 6 is installed at one end of the middle section of the guide frame 510; The auxiliary feeding mechanism 6 includes a mounting plate 601, a fixed box 602, a rotary motor 603, a rotating connecting plate 604, an L-shaped fixing frame 605, an electric telescopic rod 606, a lifting plate 607, a vibrator 608, a connecting block 609, an arc-shaped protective rubber block 610, a guide cylinder 611, a limiting block 612, and a counterweight block 613. Two guide frames 510 are each connected to a mounting plate 601 at one end of the middle section. A fixing box 602 is installed at one end of the mounting plate 601. A rotary motor 603 is installed inside the fixing box 602. The output shaft of the rotary motor 603 is connected to a rotating connecting plate 604. One end of the rotating connecting plate 604 is connected to an L-shaped fixing frame 605. The bottom end of the rotating connecting plate 604 is close to the top of the fixing box 602. The distance between the rotating motor 603 and the L-shaped fixing frame 605 is greater than the distance between the rotating motor 603 and the square cement aquaculture pond 1. An electric telescopic rod 606 is fixedly installed in the middle of the L-shaped fixing frame 605. A lifting plate 607 is connected to the bottom end of the electric telescopic rod 606. A vibrator 608 is installed at the bottom end of the lifting plate 607. A connecting block 609 is connected to the bottom end of the vibrator 608. An arc-shaped protective rubber block 610 is installed at the bottom end of the connecting block 609. Guide cylinders 611 are symmetrically installed at both ends of the top of the lifting plate 607. The top of the guide cylinders 611 is connected to the limit block 612. The guide cylinders 611 are symmetrically distributed on both sides of the electric telescopic rod 606. The guide cylinders 611 are movably inserted through the L-shaped fixed frame 605. A counterweight block 613 is installed at the end of the top of the rotating connecting plate 604 away from the L-shaped fixed frame 605. By cooperating with the electric telescopic rod 606 and the rotary motor 603, the position of the vibrator 608 can be adjusted by rotation and lifting, so that the height and position of the vibrator 608 match the position of the folded protective net 502. The vibrator 608 drives the folded protective net 502 to vibrate together, which plays a role in shaking off some of the food left on the surface of the folded protective net 502 during feeding. The remaining food can fall into the square cement breeding pond 1 for feeding under the swing, reducing food waste. At the same time, during the vibration process, the arc-shaped protective rubber block 610 is tightly attached to the folded protective net 502, which plays a protective role for the folded protective net 502. The flexible material itself makes flexible contact, which greatly reduces the probability of damage to the folded protective net 502. The guide cylinder 611 guides the lifting of the lifting plate 607, making the lifting process of the vibrator 608 more stable. At the same time, the position of the vibrator 608 is adjusted according to the feeding and unfolding / retracting state of the folded protective net 502 to prevent the vibrator 608 from obstructing the unfolding and retracting of the folded protective net 502. like Figure 7 As shown, a method for polyculturing tiger squid in a pond containing the square-spotted roe snail includes the following steps: S1. Stocking: The juveniles of the square-spotted whelk and the tiger squid are put into the inside of the square cement culture pond 1, so that the square-spotted whelk and the tiger squid can move and produce in the lower and upper areas of the water body of the square cement culture pond 1, respectively. S2, Control: The underwater thruster 508 generates thrust underwater, causing the moving stretching plate 503 to move forward along the guide frame 510, and gradually unfolding the folded protective net 502 stored inside the storage frame 501. S3. Covering: The underwater thruster 508 is embedded inside the thruster storage frame 512, and the folded protective net 502 completely covers the top of the square cement breeding pond 1, so that the tiger squid will not jump directly out of the water. S4. Feeding: Staff directly throw food onto the folding protective net 502. Most of the food passes directly through the folding protective net 502 and falls into the interior of the square cement breeding pond 1 to feed the square-spotted whelk and tiger squid. S5. Positioning: The rotary motor 603 drives the rotating connecting plate 604 to rotate, moving the L-shaped fixing frame 605 to the top of the folding protective net 502. The electric telescopic rod 606 extends forward, pushing the vibrator 608 down. S6. Swinging: The arc-shaped protective rubber block 610 is pressed tightly against the surface of the folded protective net 502. The vibrator 608 drives the arc-shaped protective rubber block 610 to vibrate, which swings the folded protective net 502, causing the food remaining on its surface to fall into the water.

[0019] The working principle and usage process of this invention are as follows: First, when the staff are raising square-spotted worm snails, the worm snails move in the bottom area of ​​the square cement culture pond 1, which results in the waste of the upper half of the water body of the square cement culture pond 1. Then, the staff raise tiger squid in the pond. The tiger squid live in the water body area above the square-spotted worm snails, without interfering with each other, which fully improves the space utilization rate of the aquaculture and improves the overall economic benefits. Tiger squid and square-spotted whelk were all put into the square cement aquaculture pond 1. The drain pipe 3 and the water inlet pipe 4 continuously drained and replenished water. The staff controlled and started the underwater propulsion device 508, which propelled it forward in the water and pushed the movable stretching plate 503 to slide on the top of the square cement aquaculture pond 1. The moving block 509 was always embedded in the guide groove 511, which played a guiding and stabilizing role for the movable stretching plate 503. When the movable stretching plate 503 moved forward, it would stretch and unfold the folded protective net 502 inside the long frame 501, so that the folded protective net 502 gradually covered the top of the square cement aquaculture pond 1. Until the underwater thruster 508 moves and embeds into the thruster storage frame 512, the protective net 502 is folded to completely cover the top of the square cement aquaculture pond 1. At this time, the extension block 517 moves to the top of the positioning block 515 along with the moving stretching plate 503, so that the installation sleeve 518 and the positioning screw hole 516 correspond to each other. The staff rotates the positioning stud 519 so that its bottom is embedded in the positioning screw hole 516, which locks and fixes the moving stretching plate 503. The folding protective net 502 is located at the top of the square cement aquaculture pond 1. It serves to intercept and protect the tiger squid, preventing them from jumping out of the water. At the same time, staff can directly throw food onto the folding protective net 502. Most of the food will pass through the folding protective net 502 and fall into the water of the square cement aquaculture pond 1 to feed the tiger squid and the square-spotted snails. A small amount of food will remain inside the folding protective net 502. Next, the staff controlled and started the rotary motor 603, which drove the rotating connecting plate 604 to rotate, moving the L-shaped fixing frame 605 to the top of the square cement aquaculture pond 1. Then, the electric telescopic rod 606 was extended downward to push the lifting plate 607 and vibrator 608 down until the arc-shaped protective rubber block 610 contacted the folded protective net 502. The vibrator 608 drove the connecting block 609 and the arc-shaped protective rubber block 610 to vibrate, and transmitted the vibration to the folded protective net 502, causing it to shake at the top of the square cement aquaculture pond 1, shaking the remaining food into the water. If it is necessary to harvest the square-spotted whelk and tiger squid cultured inside the square cement aquaculture pond 1, the folding protective net 502 must first be stored. The drive motor 505 drives the rotating block 506 and the mounting frame 507 to rotate 180 degrees, so that the underwater thruster 508 changes direction and the position of the propeller blades changes. The underwater thruster 508 can then push the movable stretching plate 503 toward the storage frame 501, pushing the folding protective net 502 into the inside of the storage frame 501.

[0020] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A system for polyculturing tiger squid in a square cement culture pond, comprising a square cement culture pond (1), characterized in that: The bottom of the square cement aquaculture pond (1) is equipped with a grid plate (2), and the top of the square cement aquaculture pond (1) is equipped with a safety anti-jump mechanism (5). The safety anti-jump mechanism (5) includes a long frame (501); A storage frame (501) is installed at one end of the top of the square cement aquaculture pond (1), and a folding protective net (502) is embedded inside the storage frame (501). A movable stretching plate (503) is installed at the top of the square cement aquaculture pond (1) on one side of the storage frame (501). A sealed waterproof box (504) is installed in the middle of the movable stretching plate (503). A drive motor (505) is installed inside the sealed waterproof box (504). A rotating block (506) is connected to the output end of the drive motor (505). A mounting frame (507) is connected to the bottom end of the rotating block (506). An underwater thruster (508) is installed at the bottom of the mounting frame (507). The bottom of both ends of the movable stretching plate (503) is connected to a moving block (509). The top of the square cement aquaculture pond (1) is equipped with a guide frame (510) on both sides. The top of the guide frame (510) is provided with a guide groove (511) in the middle. The middle of the square cement aquaculture pond (1) away from the storage frame (501) is equipped with a pusher storage frame (512).

2. The system for polyculturing tiger squid in a pond containing the square-spotted roe snail according to claim 1, characterized in that, The movable stretching plate (503) is connected to one end of the folded protective net (502), and the movable block (509) is movably embedded in the interior of the guide groove (511). The movable stretching plate (503) and the guide frame (510) are slidably connected through the movable block (509) and the guide groove (511).

3. The system for polyculturing tiger squid in a pond containing the square-spotted conch according to claim 1, characterized in that, The underwater thruster (508) and the thruster housing (512) are located on the same vertical plane, and the bottom horizontal plane of the underwater thruster (508) is higher than the bottom horizontal plane of the thruster housing (512).

4. The system for polyculturing tiger squid in a pond containing the square-spotted roe snail according to claim 1, characterized in that, The bottom end of the square cement aquaculture pond (1) is located below the grid plate (2) and a drainage pipe (3) is installed. The inside of the square cement aquaculture pond (1) is equipped with a water inlet pipe (4). One end of the mounting frame (507) is connected to an extension frame (513). The bottom of the extension frame (513) is connected to a protective permeable frame (514). A positioning block (515) is installed at one end of each of the two guide frames (510). A positioning screw hole (516) is opened in the middle of the positioning block (515). An extension block (517) is connected to both ends of the movable stretching plate (503). An installation sleeve (518) is installed in the middle of the extension block (517). A positioning stud (519) is installed in the middle of the installation sleeve (518).

5. The system for polyculturing tiger squid in a pond containing the square-spotted conch according to claim 4, characterized in that, The protective permeable frame (514) is located on one side of the underwater thruster (508), and the protective permeable frame (514) covers the surface of the propeller blade at one end of the underwater thruster (508).

6. The system for polyculturing tiger squid in a pond containing the square-spotted conch according to claim 4, characterized in that, The positions of the positioning block (515) and the positioning stud (519) correspond to each other, and the mounting sleeve (518) and the positioning stud (519) are connected by threads.

7. The system for polyculturing tiger squid in a pond containing the square-spotted roe snail according to claim 1, characterized in that, An auxiliary feeding mechanism (6) is installed at one end of the middle of the guide frame (510). The auxiliary feeding mechanism (6) includes a mounting plate (601); Each of the two guide frames (510) has a mounting plate (601) connected to one end of its middle section. A fixing box (602) is installed at one end of the mounting plate (601). A rotary motor (603) is installed inside the fixing box (602). The output shaft of the rotary motor (603) is connected to a rotating connecting plate (604). One end of the rotating connecting plate (604) is connected to an L-shaped fixing frame (605). An electric telescopic rod (606) is fixedly installed in the middle of the L-shaped fixing frame (605). A lifting plate (607) is connected to the bottom end of the electric telescopic rod (606). A vibrator (608) is installed at the bottom end of the lifting plate (607). A connecting block (609) is connected to the bottom end of the vibrator (608). An arc-shaped protective rubber block (610) is installed at the bottom end of the connecting block (609). The top of the lifting plate (607) is symmetrically equipped with guide cylinders (611) at both ends, and the top of the guide cylinders (611) is connected to a limit block (612). The top of the rotating connecting plate (604) is equipped with a counterweight block (613) at the end away from the L-shaped fixing frame (605).

8. The system and method for polyculturing tiger squid in a pond of *Bambusa squarrosa* according to claim 7, characterized in that, The bottom end of the rotating connecting plate (604) is close to the top of the fixed box (602), and the distance between the rotating motor (603) and the L-shaped fixed frame (605) is greater than the distance between the rotating motor (603) and the square cement aquaculture pond (1).

9. The system and method for polyculturing tiger squid in a pond containing the square-spotted roe snail according to claim 7, characterized in that, The guide cylinders (611) are symmetrically distributed on both sides of the electric telescopic rod (606), and the guide cylinders (611) are movably inserted through the L-shaped fixing frame (605).

10. A method for polyculturing tiger squid in a pond containing the square-spotted conch according to claim 7, characterized in that, Includes the following steps: S1. Stocking: The juveniles of the square-spotted snail and the tiger squid are put into the interior of the square cement culture pond (1), so that the square-spotted snail and the tiger squid can move and produce in the lower and upper areas of the water body of the square cement culture pond (1), respectively. S2, Control: The underwater thruster (508) generates a thrust underwater, causing the moving stretching plate (503) to move forward along the guide frame (510), and gradually unfolding the folded protective net (502) folded inside the storage frame (501); S3, Covering: The underwater thruster (508) is embedded inside the thruster storage frame (512), and the folded protective net (502) completely covers the top of the square cement breeding pond (1), so that the tiger squid will not jump directly out of the water. S4. Feeding: The staff directly throws food onto the folding protective net (502). Most of the food passes directly through the folding protective net (502) and falls into the interior of the square cement breeding pond (1) to feed the square-spotted snails and tiger squid. S5, Positioning: The rotary motor (603) drives the rotating connecting plate (604) to rotate, moving the L-shaped fixing frame (605) to the top of the folding protective net (502), and the electric telescopic rod (606) extends forward, pushing the vibrator (608) to descend; S6. Swinging: The arc-shaped protective rubber block (610) is pressed tightly against the surface of the folded protective net (502). The vibrator (608) drives the arc-shaped protective rubber block (610) to vibrate, which swings the folded protective net (502), causing the food remaining on its surface to fall into the water.

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