A seawater polyculture device involving shrimps, shellfish and sea cucumbers and its usage method

Abstract

The present invention relates to a multi-nutrient mixed aquaculture device for seawater involving shrimps, shellfish and sea urchins and a method for using the same. The mixed aquaculture device comprises an aquaculture tank and a net cage. Floating plates are fixedly connected to the net cages. Symmetrically arranged adsorption plates are slidably connected inside the aquaculture tank. Sea urchins are cultured inside the net cages of the mixed aquaculture device, and shrimps and mussels are cultured inside the aquaculture tank. By using the mixed aquaculture device to mix and culture shrimps, shellfish and sea urchins, on the one hand, it is convenient to deeply clean the inner wall of the aquaculture tank, which can reduce the time required for cleaning the inner wall of the aquaculture tank and improve the convenience of cleaning the aquaculture tank. On the other hand, the total survival rate of the mixed cultured species is 100%, and the total net yield per unit water body is greater than or equal to 6.4 g / L. This not only increases the output per unit area but also reduces the environmental risks that may be brought about by single aquaculture.

Description

Technical Field

[0001] The present invention relates to the technical field of aquaculture, and specifically relates to a seawater multi-nutrient mixed aquaculture device involving shrimps, shellfish, and sea urchins and its usage method. Background Art

[0002] Aquaculture is a production activity of cultivating, breeding, and harvesting aquatic animals and plants under artificial control, and also includes the enhancement of aquatic resources. Generally speaking, it includes the whole process of growing aquatic products from fry under artificial feeding and management, such as the cultivation of prawns, shellfish, and sea urchins.

[0003] However, in the prior art, on the one hand, during the use of the breeding box, its inner wall will become very dirty as the use time increases. At this time, it is necessary for the staff to regularly clean the inner wall of the breeding box. When the staff cleans the inner wall of the breeding box, they need to stretch most of their upper body into the breeding box for cleaning, which is very troublesome and has low convenience.

[0004] On the other hand, as important varieties in the seawater aquaculture industry, prawns, shellfish, and sea urchins each face a series of defects during the breeding process. For example: Prawn breeding is vulnerable to disease attacks and has great environmental pressure; while shellfish breeding has problems such as a long growth cycle, strict water quality requirements, and difficulty in preventing and controlling enemy organisms. The challenges of sea urchin breeding are mainly reflected in slow growth and high requirements for breeding technology. Although there are also some polyculture modes in the prior art, how to ensure the stability of the entire polyculture system and improve its productivity and economic benefits urgently needs to be studied. Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides a seawater multi-nutrient mixed aquaculture device involving shrimps, shellfish, and sea urchins.

[0006] The technical solution adopted by the present invention to solve its technical problems is: A seawater multi-nutrient mixed aquaculture device involving shrimps, shellfish, and sea urchins, including a breeding box and a net cage. Floating plates are fixedly connected to the net cages. Symmetrically arranged adsorption plates are slidably connected inside the breeding box. A support ring is fixedly connected to the outer wall of the breeding box. A moving rod is slidably connected to the support ring. The top of the moving rod is fixedly connected to a bracket. Symmetrically arranged sliding grooves are opened on the bracket. A feeding box is slidably connected inside the bracket. Lifting blocks are fixedly connected to the outer wall of the feeding box at positions corresponding to the sliding grooves. First springs are fixedly connected to the tops of the lifting blocks. A plurality of discharge ports are opened at the bottom of the feeding box. A pressure-bearing block is fixedly connected to the bottom of the feeding box. A plurality of extrusion blocks are fixedly connected to the top of the breeding box;

[0007] Inside the breeding box, there is a fixed connecting directional rod. A directional groove is provided on the directional rod. The bottom end inside the breeding box is rotatably connected with an installation ring. The center position at the top of the installation ring is fixedly connected with a rotating ring. The inner ring of the rotating ring is fixedly connected with a guiding rod. Multiple supporting blocks are fixedly connected to the top of the installation ring. The supporting blocks are all fixedly connected with supporting rods together. A second spring is fixedly connected inside each of the supporting rods. A telescopic rod is slidably connected to the position corresponding to one end of the second spring inside each of the supporting rods. One end of each telescopic rod is fixedly connected with an erasing layer. The top of the rotating ring is rotatably connected with a lifting rod.

[0008] Specifically, symmetrically arranged blocking blocks are fixedly connected to the bracket, and the top ends of the first springs are fixedly connected to the corresponding blocking blocks.

[0009] Specifically, a first handhold is fixedly connected to the top of the bracket. The specific shape of the first handhold is C-shaped. The lifting blocks are all slidably connected inside the corresponding sliding grooves.

[0010] Specifically, the specific shape of the moving rod is T-shaped. A feed inlet is fixedly connected to one side at the top of the material distribution box.

[0011] Specifically, the bottom end of the pressure-bearing block is arc-shaped, and the top ends of the extrusion blocks are all arc-shaped. The net cage and the floating board are both located inside the breeding box.

[0012] Specifically, one end of the guiding rod is slidably butted inside the directional groove, and the connection position between the guiding rod and the directional groove is spherical.

[0013] Specifically, the second springs are fixedly connected to the positions corresponding to the telescopic rods inside the supporting rods. The erasing layers are all in contact with the inner wall of the breeding box, and the second springs are all in a compressed state.

[0014] Specifically, the top end of the directional rod penetrates through the hollow position of the installation ring. The top end of the lifting rod is fixedly connected with a second handhold. The directional rod is located inside the lifting rod.

[0015] The present invention also provides a usage method of a seawater multi-nutrient mixed breeding device for shrimps, shellfishes, and sea urchins according to any one of the above. The usage method specifically includes: polyculture of sea urchins, penaeid shrimps, and mussels in the mixed breeding device; culturing sea urchins inside the net cage, culturing penaeid shrimps and mussels inside the breeding box. The penaeid shrimps are at the bottom end inside the breeding box. The net cage and the sea urchins inside float at the top end inside the breeding box. The mussels are adsorbed on both side walls of the adsorption plate or adsorbed on the inner wall of the breeding box; the total survival rate of the species in the usage method is 100%, and the total net production value per unit water body is greater than or equal to 6.4 g / L.

[0016] Further, in the method of use of the present invention, the quantity ratio of sea urchins: prawns: mussels polycultured in the polyculture device is (5 - 15):(6 - 10):(25 - 35). The ratio of sea urchins, prawns and mussels polycultured in the polyculture device needs to be appropriate. As the role of the feeding species, the sea urchins excrete the fed bait into the environment in the form of excrement after digestion. The unassimilated amount can not only be used as the food source for the next-level animals such as prawns and mussels, but also be used as the source of ammonia nitrogen to provide the growth of algae in the water body. However, an excessive proportion of sea urchins will lead to a significant increase in organic matter in the water body and easily cause eutrophication of the water body. Mussels and prawns are the digging species in this system and mainly rely on the excrement of sea urchins and the input of part of the feed for survival. An excessive number of digging species will result in a shortage of sea urchin excrement and a reduction in food in the water body, and each organism will be in a state of hunger, which is not conducive to the purpose of farming. In addition, mussels also have the ability to purify the water body. Excessive addition of mussels will also cause the death of organisms due to food problems. Too little will not produce high economic benefits.

[0017] Advantages of the present invention:

[0018] When cleaning the inner wall of the breeding tank in the present invention, only need to lift the lifting rod. The lifting rod will drive the rotating ring and the mounting ring to rise. The guide rod on the inner ring of the rotating ring will move along the guiding groove on the guiding rod. The guiding groove will cause the guide rod, the rotating ring and the mounting ring to rotate during the rising process. At this time, the mounting ring will drive the erasing layer to rotate during the rising process so as to erase and clean the inner wall of the breeding tank. It is very convenient to use, can reduce the time required for cleaning the inner wall of the breeding tank, and has high convenience. When feeding prawns, only need to push the support. The rotation of the support along the support ring will cause the components to interlock. At this time, the feed in the feeding box will be evenly sprinkled inside the breeding tank, improving the convenience of feeding prawns.

[0019] By adopting the mixed breeding device for shrimps, shellfishes and sea urchins of the present invention, using the complementary ecological characteristics of sea urchins, shrimps and shellfishes, a highly efficient and stable ecological system is jointly constructed, which not only improves the output per unit area, but also reduces the environmental risks that may be brought about by single breeding. By adopting the mixed breeding device of the present invention to mix and breed shrimps, shellfishes and sea urchins, the total survival rate of the species is 100%, and the total net output value per unit water body is greater than or equal to 6.4 g / L. Under the same breeding environment, compared with only mixing and breeding shrimps and sea urchins, the total net output value per unit water body of the mixed breeding of shrimps, shellfishes and sea urchins is increased by 150%, 900% higher than that of single breeding of shrimps, and 23% higher than that of only mixing and breeding shrimps and shellfishes.

[0020] Among them, mussels, as filter-feeding organisms, can remove suspended particulate matter in water through their filtering action, thereby improving water quality. Mussels can filter up to 10 L of water per hour, which can significantly reduce the content of nutrients such as nitrogen and phosphorus in water, help prevent the occurrence of eutrophication, and provide a cleaner growth environment for sea urchins and prawns. In addition, during the feeding process of sea urchins and prawns, their excrement can serve as a nutrient source for mussels, forming a mutually beneficial symbiotic cycle system. Brief Description of the Drawings

[0021] The present invention will be further described below in conjunction with the drawings and embodiments.

[0022] Figure 1 It is a schematic structural diagram of the mixed aquaculture device described in the present invention;

[0023] Figure 2 It is a specific structural diagram of the material distribution box and the support described in the present invention;

[0024] Figure 3 It is a partial schematic diagram of the mixed aquaculture device described in the present invention;

[0025] Figure 4 It is a specific structural diagram of the inner bottom end of the aquaculture box provided by the present invention;

[0026] Figure 5 It is a separated structural diagram of the rotating ring and the lifting rod provided by the present invention;

[0027] Figure 6 It is a separated structural diagram of the mounting ring and the aquaculture box provided by the present invention.

[0028] In the figure: 1, aquaculture box; 2, net box; 3, floating board; 4, adsorption board; 5, support ring; 6, moving rod; 7, support; 8, sliding groove; 9, material distribution box; 10, lifting block; 11, first spring; 12, discharge port; 13, bearing block; 14, extrusion block; 15, guiding rod; 16, guiding groove; 17, mounting ring; 18, rotating ring; 19, guiding rod; 20, support block; 21, support rod; 22, second spring; 23, telescopic rod; 24, erasing layer; 25, lifting rod; 26, blocking block; 27, first handhold; 28, feed inlet; 29, second handhold. Detailed Embodiments

[0029] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments. Detailed Embodiment 1:

[0031] A seawater multi-nutrient mixed aquaculture device involving shrimps, shellfish, and sea cucumbers, comprising a culture box and a net cage. Floating plates are fixedly connected to the net cages. Inside the culture box, symmetrically arranged adsorption plates are slidably connected. A support ring is fixedly connected to the outer wall of the culture box. A moving rod is slidably connected to the support ring. The top of the moving rod is fixedly connected to a support. Symmetrically arranged sliding grooves are formed on the support. A material distribution box is slidably connected inside the support. Lifting blocks are fixedly connected to the outer wall of the material distribution box corresponding to the positions of the sliding grooves. First springs are fixedly connected to the tops of the lifting blocks. A plurality of discharge ports are formed at the bottom of the material distribution box. A pressure-bearing block is fixedly connected to the bottom of the material distribution box. A plurality of extrusion blocks are fixedly connected to the top of the culture box;

[0032] Inside the culture box, a guiding rod is fixedly connected. A guiding groove is formed on the guiding rod. An installation ring is rotatably connected to the bottom end inside the culture box. The center position at the top of the installation ring is fixedly connected to a rotating ring. A guiding rod is fixedly connected to the inner ring of the rotating ring. A plurality of support blocks are fixedly connected to the top of the installation ring. The support blocks are all commonly fixedly connected to a support rod. Second springs are fixedly connected inside the support rods. Telescopic rods are slidably connected to the positions corresponding to one ends of the second springs inside the support rods. One ends of the telescopic rods are fixedly connected to a wiping layer. A lifting rod is rotatably connected to the top of the rotating ring.

[0033] In other embodiments, blocking blocks are symmetrically fixedly connected to the support. The tops of the first springs are fixedly connected to the corresponding blocking blocks.

[0034] In other embodiments, a first handhold is fixedly connected to the top of the support. The specific shape of the first handhold is C-shaped. The lifting blocks are all slidably connected inside the corresponding sliding grooves.

[0035] In other embodiments, the specific shape of the moving rod is T-shaped. A feed inlet is fixedly connected to one side of the top of the material distribution box.

[0036] In other embodiments, the bottom end of the pressure-bearing block is arc-shaped. The tops of the extrusion blocks are all arc-shaped. The net cage and the floating plate are both located inside the culture box.

[0037] In other embodiments, one end of the guiding rod slidably docks inside the guiding groove. The connection position between the guiding rod and the guiding groove is spherical.

[0038] In other embodiments, the second springs are fixedly connected to the positions corresponding to the telescopic rods inside the support rods. The wiping layers are all in contact with the inner wall of the culture box. The second springs are all in a compressed state.

[0039] In other embodiments, the top end of the orientation rod penetrates through the hollow position of the mounting ring, the top end of the lifting rod is fixedly connected with a second handle, and the orientation rod is located inside the lifting rod. Specific Embodiment 2:

[0041] A method for using a seawater polyculture device involving shrimp, shellfish, and sea urchins according to any one of the above embodiments, the method specifically includes: polyculturing sea urchins, penaeid shrimp, and mussels in the polyculture device; culturing sea urchins inside the net cage, culturing penaeid shrimp and mussels inside the culture tank, the penaeid shrimp are at the inner bottom end of the culture tank, the net cage and the inner sea urchins float at the top end inside the culture tank, and the mussels are adsorbed on both side walls of the adsorption plate or adsorbed on the inner wall of the culture tank; the total survival rate of the species in the method is 100%, and the total net production value per unit water body is greater than or equal to 6.4 g / L.

[0042] In other embodiments, the quantity ratio of sea urchins: penaeid shrimp: mussels polycultured in the polyculture device is (5 - 15):(6 - 10):(25 - 35).

[0043] Example 1:

[0044] As Figures 1-6 shown, a polyculture device involving shrimp, shellfish, and sea urchins includes a culture tank 1 and a net cage 2. Floating plates 3 are fixedly connected to the net cages 2. Symmetrically arranged adsorption plates 4 are slidably connected inside the culture tank 1. A support ring 5 is fixedly connected to the outer wall of the culture tank 1. A moving rod 6 is slidably connected to the support ring 5. The top end of the moving rod 6 is fixedly connected to a support 7. Symmetrically arranged sliding grooves 8 are formed on the support 7. A feeding box 9 is slidably connected inside the support 7. Lifting blocks 10 are fixedly connected to the outer wall of the feeding box 9 corresponding to the positions of the sliding grooves 8. First springs 11 are fixedly connected to the top ends of the lifting blocks 10. A plurality of discharge ports 12 are formed at the bottom end of the feeding box 9. A pressure-bearing block 13 is fixedly connected to the bottom end of the feeding box 9. A plurality of extrusion blocks 14 are fixedly connected to the top end of the culture tank 1;

[0045] An orientation rod 15 is fixedly connected inside the culture tank 1. An orientation groove 16 is formed on the orientation rod 15. A mounting ring 17 is rotatably connected to the inner bottom end of the culture tank 1. A rotating ring 18 is fixedly connected to the center position of the top end of the mounting ring 17. A guiding rod 19 is fixedly connected to the inner ring of the rotating ring 18. A plurality of support blocks 20 are fixedly connected to the top end of the mounting ring 17. The support blocks 20 are all commonly fixedly connected to a support rod 21. Second springs 22 are fixedly connected inside the support rods 21. Telescopic rods 23 are slidably connected inside the support rods 21 corresponding to one end of the second springs 22. Erasing layers 24 are fixedly connected to one ends of the telescopic rods 23. The top end of the rotating ring 18 is rotatably connected to a lifting rod 25.

[0046] The bracket 7 is fixedly connected with symmetrically arranged blocking blocks 26. The top ends of the first springs 11 are fixedly connected with the corresponding blocking blocks 26. The first springs 11 facilitate driving the lifting blocks 10 to move back to their original positions. The top end of the bracket 7 is fixedly connected with a first handgrip 27. The specific shape of the first handgrip 27 is set in a C shape. The lifting blocks 10 are all slidably connected inside the corresponding sliding grooves 8. The first handgrip 27 facilitates the staff to directly push the moving rod 6. The specific shape of the moving rod 6 is set in a T shape. One side of the top end of the material distribution box 9 is fixedly connected with a feed inlet 28. The feed inlet 28 facilitates the staff to regularly add feed into the material distribution box 9. The bottom end of the pressure-bearing block 13 is set in an arc shape. The top ends of the extrusion blocks 14 are all set in an arc shape. The net cage 2 and the floating plate 3 are both located inside the breeding box 1. When the pressure-bearing block 13 rotates following the material distribution box 9, it facilitates squeezing the arc-shaped part at the top of the extrusion block 14. One end of the guide rod 19 is slidably butted inside the orientation groove 16. The connection position between the guide rod 19 and the orientation groove 16 is set in a spherical shape. The orientation groove 16 facilitates guiding the upward movement trajectory of the guide rod 19. The second springs 22 are fixedly connected at the corresponding positions inside the support rods 21 of the telescopic rods 23. The erasing layers 24 are all attached to the inner wall of the breeding box 1. The second springs 22 are all in a compressed state. The second springs 22 in the compressed state facilitate driving the telescopic rods 23 to continuously protrude. The top end of the orientation rod 15 penetrates through the hollow position of the mounting ring 17. The top end of the lifting rod 25 is fixedly connected with a second handgrip 29. The orientation rod 15 is located inside the lifting rod 25. The second handgrip 29 facilitates lifting the lifting rod 25.

[0047] During use, sea urchins can be cultured inside the net cage 2, while prawns and mussels can be cultured inside the breeding box 1. Prawns are normally active at the bottom end inside the breeding box 1. The buoyancy of the floating plate 3 will make the net cage 2 and the sea urchins inside float at the top end inside the breeding box 1. Normally living mussels will adsorb on both side walls of the adsorption plate 4, or can also adsorb on the inner wall of the breeding box 1. This polyculture mode simulates the natural ecosystem, allowing different species to share the same culture space, thus simulating the species diversity in nature to a certain extent. For example, as filter-feeding organisms, mussels can remove suspended particles in the water body, improve water quality, and provide a cleaner growth environment for sea urchins and prawns. Research shows that the presence of mussels in the polyculture system can reduce the concentrations of nitrogen and phosphorus in the water body, thereby reducing the risk of eutrophication and providing more suitable living conditions for other aquatic organisms. During the feeding process of sea urchins and prawns, their excreta can serve as a nutrient source for mussels. The excreta of sea urchins and prawns provide rich nutrient sources for mussels, forming a symbiotic relationship of mutual benefit;

[0048] When feeding is required, the entire bracket 7 can be pushed to move by the first handgrip 27. At this time, the driving force will act on the moving rod 6 through the bracket 7. At this time, the moving rod 6 will move along the support ring 5. When the moving rod 6 moves, the bracket 7 will also move. The movement of the bracket 7 will drive the material distribution box 9 to move together. The movement of the material distribution box 9 will drive the pressure-bearing block 13 to move. During the movement of the pressure-bearing block 13, the arc part thereof will squeeze the arc part of the extrusion block 14. At this time, as the pressure-bearing block 13 moves, the extrusion block 14 will passively squeeze the pressure-bearing block 13, causing the pressure-bearing block 13 to move upward during the movement. The upward movement of the pressure-bearing block 13 will drive the material distribution box 9 to move together. The upward movement of the material distribution box 9 will drive the lifting block 10 to squeeze and contract the first spring 11. The vibration generated when the material distribution box 9 moves up and down will cause the internal feed to be discharged from the discharge port 12. When the material distribution box 9 drives the pressure-bearing block 13 to move to a position where it no longer squeezes the extrusion block 14, the first spring 11 will drive the lifting block 10 and the material distribution box 9 to reset downward. At this time, the vibration force of the downward reset of the material distribution box 9 will also cause the internal feed to be discharged to the breeding box 1 through the discharge port 12. Since there are multiple pressure-bearing blocks 13 at the top of the breeding box 1, during the movement of the material distribution box 9 along the support ring 5, the process of moving up and down will be continuously repeated, so that the feed is evenly sprinkled inside the breeding box 1. The feed inside the material distribution box 9 can be used for a period of time, and the staff can also fill the material distribution box 9 with feed regularly through the feed inlet 28;

[0049] When the breeding box 1 needs to be cleaned, the net box 2 and the adsorption plate 4 are taken out from the inside of the breeding box 1, and then the lifting rod 25 is pulled upward by the second handgrip 29. The upward movement of the lifting rod 25 will drive the rotating ring 18, the mounting ring 17 and the guide rod 19 to move upward together. Since the lifting rod 25 is controlled by the staff's hand, it cannot rotate during the upward movement. During the upward movement of the guide rod 19, it will move along the path of the orientation groove 16. The orientation groove 16 will guide the guide rod 19 and the rotating ring 18 to rotate during the upward movement. At this time, the rotation of the rotating ring 18 will drive the mounting ring 17 to rotate. The rotation of the mounting ring 17 will drive the support block 20, the support rod 21, the telescopic rod 23 and the erasing layer 24 to rotate together. The rotating and upward moving erasing layer 24 will perform the erasing work on the inner wall of the breeding box 1. As the mounting ring 17 and the erasing layer 24 move upward, the second spring 22 in the compressed state will slowly drive the telescopic rod 23 to extend outwards from the support rod 21. Because the diameter of the outer wall of the breeding box 1 is larger and larger upwards, and then the staff moves the lifting rod 25 up and down repeatedly, which can drive the erasing layer 24 to continuously clean the inner wall of the breeding box 1, which is convenient to use and provides strong convenience for the cleaning of the breeding box 1.

[0050] In Example 1, prawns weighing 42±2 g, sea urchins weighing 57±5 g, and mussels weighing 80±2 g were selected and placed in the mixed aquaculture device. 8 prawns were cultured at the bottom layer of the culture tank 1, 5 sea urchins were cultured in the net cage 2, and 30 mussels were adsorbed and cultured on the adsorption plate 4. They were cultured in a culture tank with a water volume of 500 L for 60 days. The specific culture environment was: natural seawater, dissolved oxygen was 5.45 - 5.6 g / L; temperature was 22 - 25 °C; salinity was 28 - 33 ppt, and pH was 8.3 - 8.4. During the culture process, each sea urchin was fed 2 g of kelp per day, each prawn was fed 1 g of feed per day, mussels survived on excrement, and prawns also ate the excrement of sea urchins. After 60 days of culture, the total survival rate of the species reached 100%, and the total net yield per unit water volume was 6.47 g / L.

[0051] Example 2:

[0052] The difference between this Example 2 and Example 1 is only that: 8 prawns were cultured at the bottom layer of the culture tank 1, 15 sea urchins were cultured in the net cage 2, and 30 mussels were adsorbed and cultured on the adsorption plate 4. As a result, the total survival rate of the species also reached 100%, and the total net yield per unit water volume was 7.06 g / L.

[0053] Comparative Example 1:

[0054] The difference between this Comparative Example 1 and Example 1 is only that: only 8 prawns were cultured at the bottom layer of the culture tank 1. As a result, the total survival rate of the species was only 62.5%, and the total net yield per unit water volume was 0.66 g / L.

[0055] Comparative Example 2:

[0056] The difference between this Comparative Example 2 and Example 1 is only that: 8 prawns were cultured at the bottom layer of the culture tank 1, and 5 sea urchins were cultured in the net cage 2. As a result, the total survival rate of the species was 84.6%, and the total net yield per unit water volume was 2.6 g / L.

[0057] Comparative Example 3:

[0058] The difference between this Comparative Example 3 and Example 1 is only that: 8 prawns were cultured at the bottom layer of the culture tank 1, and 15 sea urchins were cultured in the net cage 2. As a result, the total survival rate of the species was 100%, and the total net yield per unit water volume was 2.76 g / L.

[0059] Comparative Example 4:

[0060] The difference between this Comparative Example 4 and Example 1 is only that: 8 prawns were cultured at the bottom layer of the culture tank 1, and 30 mussels were adsorbed and cultured on the adsorption plate 4. As a result, the total survival rate of the species was 92.5%, and the total net yield per unit water volume was 5.49 g / L.

[0061] Comparative Example 5:

[0062] The difference between this Comparative Example 5 and Example 1 is only that: 5 prawns are cultured at the bottom layer of the culture tank 1. The result shows that the total survival rate of the species is 77.5%, and the total net yield per unit water body is 3.87 g / L.

[0063] Comparative Example 6:

[0064] The difference between this Comparative Example 6 and Example 1 is only that: 12 prawns are cultured at the bottom layer of the culture tank 1. The result shows that the total survival rate of the species is 70.21%, and the total net yield per unit water body is 3.96 g / L.

[0065] Comparative Example 7:

[0066] The difference between this Comparative Example 7 and Example 1 is only that: 20 mussels are adsorbed and cultured on the adsorption plate 4. The result shows that the total survival rate of the species is 72.73%, and the total net yield per unit water body is 3.11 g / L.

[0067] Comparative Example 8:

[0068] The difference between this Comparative Example 8 and Example 1 is only that: 40 mussels are adsorbed and cultured on the adsorption plate 4. The result shows that the total survival rate of the species is 77.36%, and the total net yield per unit water body is 3.59 g / L.

[0069] Comparative Example 9:

[0070] The difference between this Comparative Example 9 and Example 1 is only that: 3 sea urchins are cultured in the net cage 2. The result shows that the total survival rate of the species is 56.10%, and the total net yield per unit water body is 2.10 g / L.

[0071] Comparative Example 10:

[0072] The difference between this Comparative Example 10 and Example 1 is only that: 18 sea urchins are cultured in the net cage 2. The result shows that the total survival rate of the species is 66.07%, and the total net yield per unit water body is 3.05 g / L.

[0073] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A multi-nutrient mixed breeding device for shrimp, shellfish and gallbladder in seawater, characterized in that: The invention comprises a breeding box (1) and a net box (2), wherein the net box (2) is fixedly connected with a floating plate (3), the breeding box (1) is slidably connected with a symmetrically arranged adsorption plate (4), the outer wall of the breeding box (1) is fixedly connected with a support ring (5), the support ring (5) is slidably connected with a moving rod (6), the top of the moving rod (6) is fixedly connected with a bracket (7), the bracket (7) is provided with a symmetrically arranged sliding groove (8), the bracket (7) is slidably connected with a distribution box (9), the outer wall of the distribution box (9) is fixedly connected with a lifting block (10) at a position corresponding to the sliding groove (8), the top of the lifting block (10) is fixedly connected with a first spring (11), the bottom end of the distribution box (9) is provided with a plurality of discharge ports (12), the bottom end of the distribution box (9) is fixedly connected with a pressure bearing block (13), and the top of the breeding box (1) is fixedly connected with a plurality of extrusion blocks (14); The breeding box (1) is fixedly connected to a directional rod (15) inside, and a directional groove (16) is formed on the directional rod (15). The bottom end of the breeding box (1) is rotatably connected to a mounting ring (17). A rotating ring (18) is fixedly connected to the center position of the top of the mounting ring (17). The inner ring of the rotating ring (18) is fixedly connected to a guide rod (19). A plurality of support blocks (20) are fixedly connected to the top of the mounting ring (17). The support blocks (20) are all fixedly connected to a support rod (21). The support rod (21) is fixedly connected to a second spring (22), and a telescopic rod (23) is slidably connected to a position corresponding to one end of the second spring (22) in the support rod (21), and an erasing layer (24) is fixedly connected to one end of the telescopic rod (23), and a lifting rod (25) is rotatably connected to the top of the rotating ring (18); the bottom end of the pressure block (13) is arc-shaped, and the top end of the extrusion block (14) is also arc-shaped, and the net box (2) and the floating plate (3) are both located inside the breeding box (1); The second springs (22) are fixedly connected to the telescopic rods (23) at positions inside the corresponding support rods (21), the erasing layers (24) are in contact with the inner wall of the breeding box (1), and the second springs (22) are in a compressed state.

2. A device for multi-nutrient mixed cultivation of shrimp, shellfish and gallbladder in seawater according to claim 1, characterized in that: The bracket (7) is fixedly connected to symmetrically arranged blocking blocks (26), and the top ends of the first springs (11) are fixedly connected to corresponding blocking blocks (26).

3. The device for multi-nutrient mixed cultivation of shrimp, shellfish and gallbladder in seawater according to claim 1, characterized in that: A first hand-held handle (27) is fixedly connected to the top end of the bracket (7), and the specific shape of the first hand-held handle (27) is a C-shaped arrangement. The lifting blocks (10) are slidably connected to the inside of the corresponding sliding grooves (8).

4. The device for multi-nutrient mixed cultivation of shrimp, shellfish and gallbladder in seawater according to claim 1, characterized in that: The specific shape of the moving rod (6) is a T-shaped arrangement, and a feed port (28) is fixedly connected to one side of the top end of the material distribution box (9).

5. The device for multi-nutrient mixed cultivation of shrimp, shellfish and gallbladder in seawater according to claim 1, characterized in that: The top end of the directional rod (15) passes through the hollow position of the mounting ring (17), the top end of the lifting rod (25) is fixedly connected to a second hand-held handle (29), and the directional rod (15) is located inside the lifting rod (25).

6. A method for using the seawater multi-nutrient mixed culture device for shrimp, shellfish and gallbladder according to any one of claims 1 to 5, characterized in that: The method of use specifically comprises: co-culturing sea urchins, prawns and mussels in the mixed culture device; culturing sea urchins in the net cage (2), culturing prawns and mussels in the culture box (1), the prawns being at the bottom of the culture box (1), the net cage (2) and the sea urchins inside floating at the top of the culture box (1), and the mussels being adsorbed on the two side walls of the adsorption plate (4) and on the inner wall of the culture box (1); the total species survival rate of the method of use is 100%, and the total net output per unit water body is greater than or equal to 6.4 g / L.

7. The method for using the seawater multi-nutrient mixed culture device for shrimp, shellfish and gallbladder according to claim 6, characterized in that: The ratio of the number of sea urchins: shrimps: mussels co-cultured in the mixed culture device is (5-15): (6-10): (25-35).

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