Seawater multi-nutrient mixed culture device relating to shrimps, shells and gallbladders and use method of seawater multi-nutrient mixed culture device

Abstract

The invention relates to a seawater multi-nutrient mixed culture device for shrimps, shells and gallbladders and a using method thereof, the mixed culture device comprises a culture box and net cages, floating plates are fixedly connected to the net cages, and symmetrically arranged adsorption plates are slidably connected to the interior of the culture box. Sea urchins are cultured in the net cage of the mixed culture device, and prawns and mussels are cultured in the culture box. By adopting the mixed culture device for mixed culture of shrimps, shells and gallbladders, on one hand, deep cleaning of the inner wall of the culture box is facilitated, the time consumed for cleaning the inner wall of the culture box can be shortened, and the convenience of cleaning the culture box is improved; on the other hand, the total survival rate of species bred in a mixed mode is 100%, the total net yield value of unit water is larger than or equal to 6.4 g / L, the yield of unit area is increased, and the environmental risk possibly caused by single breeding is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture, in particular to a seawater multi-nutrient mixed culture device for shrimp, shellfish and gallbladder and a use method thereof. Background Art

[0002] Aquaculture is the production activity of cultivating, breeding and harvesting aquatic plants and animals under human control. It also includes the proliferation of aquatic resources. In general, it includes the whole process of growing aquatic products from seedlings under artificial breeding and management, such as the farming of shrimp, 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, the staff is required to regularly clean the inner wall of the breeding box. When the staff cleans the inner wall of the breeding box, they need to put their entire upper body into the breeding box for cleaning, which is very troublesome and less convenient.

[0004] On the other hand, as important species in the marine aquaculture industry, shrimp, shellfish and sea urchins each face a series of defects in the breeding process. For example, shrimp farming is susceptible to diseases and high environmental pressure; while shellfish farming has problems such as long growth cycle, strict water quality requirements, and difficulty in controlling predators. The challenges of sea urchin farming are mainly reflected in slow growth and high requirements for breeding technology. Although there are some mixed breeding models in the existing technology, how to ensure the stability of the entire mixed breeding 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 breeding device involving shrimp, shellfish and gallbladder.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a seawater multi-nutrient mixed breeding device involving shrimp, shellfish and gallbladder, comprising a breeding box and a net cage, the net cages are fixedly connected with floating plates, the breeding box is slidably connected with symmetrically arranged adsorption plates, the outer wall of the breeding box is fixedly connected with a support ring, the support ring is slidably connected with a moving rod, the top of the moving rod is fixedly connected with a bracket, the bracket is provided with symmetrically arranged sliding grooves, the bracket is slidably connected with a distribution box, the outer wall of the distribution box is fixedly connected with lifting blocks at positions corresponding to the sliding grooves, the top of the lifting blocks is fixedly connected with a first spring, the bottom end of the distribution box is provided with a plurality of discharge ports, the bottom end of the distribution box is fixedly connected with a pressure block, and the top of the breeding box is fixedly connected with a plurality of extrusion blocks; A directional rod is fixedly connected inside the breeding box, and a directional groove is provided on the directional rod. A mounting ring is rotatably connected to the bottom end of the breeding box, a rotating ring is fixedly connected at the center position of the top of the mounting ring, and the inner ring of the rotating ring is fixedly connected to a guide rod. A plurality of support blocks are fixedly connected to the top of the mounting ring, and the support blocks are commonly fixedly connected to a support rod. A second spring is fixedly connected inside the support rod, and a telescopic rod is slidably connected at a position inside the support rod corresponding to one end of the second spring, an erasing layer is fixedly connected to one end of the telescopic rod, and a lifting rod is rotatably connected to the top of the rotating ring.

[0007] Specifically, the bracket is fixedly connected with symmetrically arranged blocking blocks, and the top ends of the first springs are fixedly connected with corresponding blocking blocks.

[0008] Specifically, a first hand-held handle is fixedly connected to the top of the bracket, and a specific shape of the first hand-held handle is a C-shaped setting. The lifting blocks are slidably connected to the inside of the corresponding sliding groove.

[0009] Specifically, the moving rod is in a T-shaped configuration, and a feed port is fixedly connected to one side of the top of the material distribution box.

[0010] Specifically, the bottom end of the pressure block is arc-shaped, the top end of the extrusion block is arc-shaped, and the net cage and the floating plate are both located inside the breeding box.

[0011] Specifically, one end of the guide rod is slidably docked inside the directional groove, and the connecting position between the guide rod and the directional groove is spherical.

[0012] Specifically, the second springs are fixedly connected to the telescopic rods at positions inside the corresponding support rods, the erasing layers are in contact with the inner wall of the breeding box, and the second springs are in a compressed state.

[0013] Specifically, the top end of the directional rod passes through the hollow position of the mounting ring, the top end of the lifting rod is fixedly connected with a second hand-held handle, and the directional rod is located inside the lifting rod.

[0014] The present invention also provides a method for using the seawater multi-nutrient mixed culture device involving shrimp, shellfish and gallbladder based on any one of the above-mentioned methods, and the method specifically includes: co-culturing sea urchins, prawns and mussels in the mixed culture device; culturing sea urchins inside the net cage, culturing prawns and mussels inside the culture box, the prawns are at the bottom of the culture box, the net cage and the internal sea urchins float at the top of the culture box, and the mussels are adsorbed on the two side walls of the adsorption plate or on the inner wall of the culture box; the total species survival rate of the method is 100%, and the total net output per unit water body is greater than or equal to 6.4 g / L.

[0015] Furthermore, in the method of use of the present invention, the ratio of the number of sea urchins: shrimps: mussels co-cultured in the co-culture device is (5-15): (6-10): (25-35). The ratio of sea urchins, shrimps and mussels co-cultured in the co-culture device must be appropriate. Sea urchins, as a feeding species, discharge the fed bait into the environment in the form of excrement after digestion. The unassimilated amount can not only serve as a food source for the next level of animals such as shrimps and mussels, but also as a source of ammonia nitrogen for the growth of algae in the water body. However, too much sea urchin number ratio will lead to a significant increase in organic matter in the water body, which is easy to cause eutrophication of the water body. Mussels and shrimps, as digging species in this system, mainly rely on the excrement of sea urchins and the input of some feed for survival. Too many digging species will result in a shortage of sea urchin excrement and a reduction in food in the water body. Each organism will be in a state of hunger, which is not conducive to the purpose of breeding. In addition, mussels also have the ability to purify water bodies. Too much mussels will also cause the death of organisms due to food problems. Too little will not produce high economic benefits.

[0016] Beneficial effects of the present invention: When the present invention cleans the inner wall of the breeding box, it only needs 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 directional groove on the directional rod, the directional groove will make the guide rod, the rotating ring and the mounting ring rotate during the rising process, at this time the mounting ring will drive the wiping layer to rotate during the rising process, so as to wipe and clean the inner wall of the breeding box, which is very convenient to use and can reduce the time required for cleaning the inner wall of the breeding box, and is highly convenient. When feeding shrimps, it only needs to push the bracket, and the bracket rotates along the support ring to make the various components move in conjunction, at this time the feed inside the distribution box will be evenly sprinkled inside the breeding box, which improves the convenience of shrimp feeding.

[0017] The mixed culture device of shrimp, shellfish and gallbladder described in the present invention utilizes the mutually complementary ecological characteristics of gallbladder, shrimp and shellfish to jointly construct an efficient and stable ecosystem, which not only improves the output per unit area, but also reduces the environmental risks that may be caused by single culture. The mixed culture device described in the present invention is used to mix shrimp, shellfish and gallbladder, and the total survival rate of the species is 100%, and the total net output per unit water body is greater than or equal to 6.4 g / L. Under the same breeding environment, compared with only mixed shrimp and gallbladder, the total net output per unit water body of shrimp, shellfish and gallbladder mixed culture increased by 150%, compared with single shrimp culture increased by 900%, compared with only mixed shrimp and shellfish increased by 23%.

[0018] Among them, mussels, as filter-feeding organisms, can remove suspended particles in the 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 the water, help prevent eutrophication, and provide a cleaner growth environment for sea urchins and shrimps. In addition, during the feeding process, the excrement of sea urchins and shrimps can serve as a source of nutrition for mussels, forming a mutually beneficial symbiotic circulation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of the mixed farming device of the present invention; Figure 2 This is a specific structural diagram of the material distribution box and the bracket of the present invention; Figure 3 It is a partial schematic diagram of the mixed farming device of the present invention; Figure 4 A specific structural diagram of the bottom of the inner part of the breeding box provided by the present invention; Figure 5 A structural diagram of the separation of the rotating ring and the lifting rod provided by the present invention; Figure 6 This is a structural diagram of the separation of the mounting ring and the breeding box provided by the present invention.

[0021] In the figure: 1. breeding box; 2. net cage; 3. floating plate; 4. adsorption plate; 5. support ring; 6. moving rod; 7. bracket; 8. sliding groove; 9. material distribution box; 10. lifting block; 11. first spring; 12. discharge port; 13. pressure block; 14. extrusion block; 15. directional rod; 16. directional groove; 17. mounting ring; 18. rotating ring; 19. guide rod; 20. support block; 21. support rod; 22. second spring; 23. telescopic rod; 24. erasing layer; 25. lifting rod; 26. blocking block; 27. first hand handle; 28. feed port; 29. ​​second hand handle. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Specific implementation method one:

[0024] A multi-nutrient mixed breeding device for shrimp, shellfish and gallbladder in seawater, comprising a breeding box and a net box, the net boxes are fixedly connected with floating plates, the breeding box is slidably connected with symmetrically arranged adsorption plates, the outer wall of the breeding box is fixedly connected with a support ring, the support ring is slidably connected with a moving rod, the top of the moving rod is fixedly connected with a bracket, the bracket is provided with symmetrically arranged sliding grooves, the bracket is slidably connected with a distribution box, the outer wall of the distribution box is fixedly connected with lifting blocks at positions corresponding to the sliding grooves, the top of the lifting blocks is fixedly connected with a first spring, the bottom end of the distribution box is provided with a plurality of discharge ports, the bottom end of the distribution box is fixedly connected with a pressure bearing block, and the top of the breeding box is fixedly connected with a plurality of extrusion blocks; A directional rod is fixedly connected inside the breeding box, and a directional groove is provided on the directional rod. A mounting ring is rotatably connected to the bottom end of the breeding box, a rotating ring is fixedly connected at the center position of the top of the mounting ring, and the inner ring of the rotating ring is fixedly connected to a guide rod. A plurality of support blocks are fixedly connected to the top of the mounting ring, and the support blocks are commonly fixedly connected to a support rod. A second spring is fixedly connected inside the support rod, and a telescopic rod is slidably connected at a position inside the support rod corresponding to one end of the second spring, an erasing layer is fixedly connected to one end of the telescopic rod, and a lifting rod is rotatably connected to the top of the rotating ring.

[0025] In other embodiments, symmetrically arranged blocking blocks are fixedly connected to the bracket, and top ends of the first springs are fixedly connected to corresponding blocking blocks.

[0026] In other embodiments, a first hand-held handle is fixedly connected to the top of the bracket, and a specific shape of the first hand-held handle is a C-shaped setting. The lifting blocks are slidably connected to the inside of the corresponding sliding groove.

[0027] In other embodiments, the specific shape of the moving rod is a T-shaped arrangement, and a feed port is fixedly connected to one side of the top end of the distribution box.

[0028] In other embodiments, the bottom end of the pressure block is arc-shaped, the top end of the extrusion block is arc-shaped, and the net cage and the floating plate are both located inside the breeding box.

[0029] In other embodiments, one end of the guide rod is slidably docked inside the orientation groove, and the connection position between the guide rod and the orientation groove is spherical.

[0030] In other embodiments, the second springs are fixedly connected to the telescopic rods at positions inside the supporting rods corresponding to the telescopic rods, the erasing layers are in contact with the inner walls of the breeding box, and the second springs are in a compressed state.

[0031] In other embodiments, the top end of the directional rod passes through the hollow position of the mounting ring, the top end of the lifting rod is fixedly connected to a second hand-held handle, and the directional rod is located inside the lifting rod. Specific implementation method 2:

[0033] A method for using a seawater multi-nutrient mixed culture device involving shrimp, shellfish and gallbladders based on any of the above-mentioned embodiments, the method specifically comprising: co-culturing sea urchins, prawns and mussels in the mixed culture device; culturing sea urchins inside a net cage, culturing prawns and mussels inside a culture box, the prawns are at the bottom of the culture box, the net cage and the internal sea urchins float at the top of the culture box, and the mussels are adsorbed on the two side walls of the adsorption plate or on the inner wall of the culture box; the total species survival rate of the method is 100%, and the total net output per unit water body is greater than or equal to 6.4 g / L.

[0034] In other embodiments, the ratio of sea urchins: shrimps: mussels co-cultured in the mixed culture device is (5-15): (6-10): (25-35).

[0035] Embodiment 1:

[0036] like Figure 1-Figure 6 As shown, a mixed breeding device involving shrimp, shellfish and gallbladder comprises a breeding box 1 and a net box 2, 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 block 13, and the top of the breeding box 1 is fixedly connected with a plurality of extrusion blocks 14; A directional rod 15 is fixedly connected inside the breeding box 1, and a directional groove 16 is opened on the directional rod 15. A mounting ring 17 is rotatably connected to the bottom end of the breeding box 1. A rotating ring 18 is fixedly connected at 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. A second spring 22 is fixedly connected inside the support rod 21. A telescopic rod 23 is slidably connected to the support rod 21 at a position corresponding to one end of the second spring 22. An erasing layer 24 is fixedly connected to one end of the telescopic rod 23. A lifting rod 25 is rotatably connected to the top of the rotating ring 18.

[0037] 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 are convenient for driving the lifting blocks 10 to reset and move, the top ends of the bracket 7 are fixedly connected with the first hand-held handle 27, the specific shape of the first hand-held handle 27 is a C-shaped setting, the lifting blocks 10 are slidably connected to the inside of the corresponding sliding groove 8, the first hand-held handle 27 is convenient for the staff to directly push the moving rod 6, the specific shape of the moving rod 6 is a T-shaped setting, a feed port 28 is fixedly connected to one side of the top end of the feed box 9, the feed port 28 is convenient for the staff to regularly add feed to the inside of the feed box 9, the bottom end of the pressure block 13 is an arc setting, the top ends of the extrusion blocks 14 are all arc settings, the net box 2 and the floating plate 3 are both located inside the breeding box 1, and the pressure block 13 is connected to the feeding port 28. As the material distribution box 9 rotates, it is convenient to extrude the arc-shaped part on the top of the extrusion block 14. One end of the guide rod 19 slides and docks inside the directional groove 16. The connection position between the guide rod 19 and the directional groove 16 is spherical. The directional groove 16 is convenient for guiding the upward trajectory of the guide rod 19. The second spring 22 is fixedly connected to the telescopic rod 23 at the internal position of the support rod 21 corresponding to the telescopic rod 23. The erasing layer 24 is in contact with the inner wall of the breeding box 1. The second spring 22 is in a compressed state. The second spring 22 in a compressed state is convenient for driving the telescopic rod 23 to continue to extend. 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 with a second hand-held handle 29. The directional rod 15 is located inside the lifting rod 25, and the second hand-held handle 29 is convenient for lifting the lifting rod 25.

[0038] When in use, sea urchins can be cultured inside the cage 2, while shrimps and mussels can be cultured inside the culture box 1. The shrimps are normally active at the bottom of the culture box 1, and the buoyancy of the floating plate 3 will make the cage 2 and the internal sea urchins float at the top of the culture box 1. The mussels that live normally will be adsorbed on the two side walls of the adsorption plate 4, and can also be adsorbed on the inner wall of the culture box 1. This mixed culture mode simulates the natural ecosystem and allows different species to share the same culture space, thereby simulating the species diversity in nature to a certain extent. For example, mussels, as filter-feeding organisms, can remove suspended particles in the water, improve water quality, and provide a cleaner growth environment for sea urchins and shrimps. Studies have shown that the presence of mussels in the mixed culture system can reduce the concentration of nitrogen and phosphorus in the water, thereby reducing the risk of eutrophication and providing more suitable living conditions for other aquatic organisms. During the feeding process, the excrement of sea urchins and shrimps can be used as a source of nutrition for mussels, and the excrement of sea urchins and shrimps provides a rich source of nutrition for mussels, forming a mutually beneficial symbiotic relationship. When feeding is needed, the entire bracket 7 can be pushed to move by the first hand-held handle 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 supporting ring 5, and the moving rod 6 will move the bracket 7 as well. The movement of the bracket 7 will drive the distributing box 9 to move together, and the movement of the distributing box 9 will drive the pressure block 13 to move. During the movement, the arc-shaped part of the pressure block 13 will squeeze the arc-shaped part of the extrusion block 14. At this time, as the pressure block 13 moves, the extrusion block 14 will passively squeeze the pressure block 13, so that the pressure block 13 moves upward during the movement. The upward movement of the pressure block 13 will drive the distributing box 9 to move together, and the upward movement of the distributing box 9 will drive the lifting block 10 to move the first When the first spring 11 is squeezed and contracted, the vibration generated by the distribution box 9 during the lifting and lowering will cause the internal feed to be discharged from the discharge port 12, and when the distribution box 9 drives the pressure block 13 to move to a position where it is no longer squeezed by the extrusion block 14, the first spring 11 will drive the lifting block 10 and the distribution box 9 to return downward. At this time, the vibration force of the distribution box 9 returning downward will also cause the internal feed to be discharged into the breeding box 1 through the discharge port 12, and the breeding box 1 is provided with a plurality of pressure blocks 13 at the top. Therefore, the distribution box 9 will continuously repeat the process of up and down vibration during the movement along the support ring 5, so that the feed is evenly sprinkled inside the breeding box 1. The feed inside the distribution box 9 can be used for a period of time, and the staff can also regularly fill the distribution box 9 with feed through the feed inlet 28; When the breeding box 1 needs to be cleaned, the net box 2 and the adsorption plate 4 are taken out from the breeding box 1, and then the lifting rod 25 is pulled upward by the second hand-held handle 29. The upward movement of the lifting rod 25 will drive the rotating ring 18, the installation ring 17 and the guide rod 19 to move upward together. The lifting rod 25 is controlled by the staff's hand and cannot rotate during the rising process. The guide rod 19 moves along the path of the directional groove 16 during the upward movement. The directional groove 16 guides 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 installation 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 wiping layer 24 to rotate together. The rotating and upwardly moving wiping layer 24 will wipe the inner wall of the breeding box 1. As the mounting ring 17 and the wiping layer 24 move upward, the second spring 22 in a compressed state will slowly drive the telescopic rod 23 to extend outward from the support rod 21. Because the outer wall of the breeding box 1 increases in diameter as it moves upward, the staff can then repeatedly move the lifting rod 25 up and down to drive the wiping layer 24 to continuously clean the inner wall of the breeding box 1. It is easy to use and provides greater convenience for cleaning the breeding box 1.

[0039] In this embodiment 1, shrimps weighing 42±2 g, sea urchins weighing 57±5 g, and mussels weighing 80±2 g were selected and placed in the mixed culture device. Eight shrimps were cultured at the bottom of the culture box 1, five sea urchins were cultured in the net cage 2, and 30 mussels were adsorbed and cultured on the adsorption plate 4. The culture was placed in a culture box with a water volume of 500 L for 60 days. The specific culture environment was: natural seawater, dissolved oxygen of 5.45-5.6 g / L; temperature of 22-25 ° C; salinity of 28-33 ppt, pH of 8.3-8.4. During the culture process, the sea urchins were fed 2 g / kelp per day, and the shrimps were fed 1 g / feed per day. The mussels survived on excrement, and the shrimps also ate the excrement of the sea urchins. After 60 days of culture, the total survival rate of the detected species reached 100%, and the total net yield per unit water body was 6.47 g / L.

[0040] Embodiment 2:

[0041] The difference between Example 2 and Example 1 is that 8 shrimps are cultured at the bottom of the culture box 1, 15 sea urchins are cultured in the net cage 2, and 30 mussels are cultured by adsorption on the adsorption plate 4. The total survival rate of the species also reached 100%, and the total net yield per unit water body was 7.06 g / L.

[0042] Comparative Example 1: The difference between this comparative example 1 and the example 1 is that only 8 prawns are cultured in the bottom layer of the culture box 1. As a result, the total survival rate of the species was only 62.5%, and the total net yield per unit water body was 0.66 g / L.

[0043] Comparative Example 2: The difference between this comparative example 2 and example 1 is that 8 shrimps are cultured in the bottom of the culture box 1, and 5 sea urchins are cultured in the net cage 2. Results The total survival rate of the species was 84.6%, and the total net yield per unit water body was 2.6 g / L.

[0044] Comparative Example 3: The difference between this comparative example 3 and example 1 is that 8 shrimps are cultured in the bottom of the culture box 1, and 15 sea urchins are cultured in the net cage 2. Results The total survival rate of the species is 100%, and the total net yield per unit water body is 2.76 g / L.

[0045] Comparative Example 4: The difference between this comparative example 4 and example 1 is that 8 prawns are cultured in the bottom layer of the culture box 1, and 30 mussels are adsorbed and cultured on the adsorption plate 4. As a result, the total survival rate of the species is 92.5%, and the total net yield per unit water body is 5.49 g / L.

[0046] Comparative Example 5: The only difference between this comparative example 5 and example 1 is that 5 prawns were cultured at the bottom of the culture box 1. Results The total survival rate of the species was 77.5%, and the total net yield per unit water body was 3.87 g / L.

[0047] Comparative Example 6: The only difference between this comparative example 6 and example 1 is that 12 prawns were cultured in the bottom layer of the culture box 1. Results The total survival rate of the species was 70.21%, and the total net yield per unit water body was 3.96 g / L.

[0048] Comparative Example 7: The only difference between this comparative example 7 and example 1 is that 20 cultured mussels were adsorbed on the adsorption plate 4. Results The total survival rate of the species was 72.73%, and the total net yield per unit water body was 3.11 g / L.

[0049] Comparative Example 8: The only difference between this comparative example 8 and example 1 is that 40 cultured mussels were adsorbed on the adsorption plate 4. Results The total survival rate of the species was 77.36%, and the total net yield per unit water body was 3.59 g / L.

[0050] Comparative Example 9: The only difference between this comparative example 9 and example 1 is that 3 sea urchins were cultured in the cage 2. Results The total survival rate of the species was 56.10%, and the total net yield per unit water body was 2.10 g / L.

[0051] Comparative Example 10: The only difference between this comparative example 10 and example 1 is that 18 sea urchins were cultured in the cage 2. Results The total survival rate of the species was 66.07%, and the total net yield per unit water body was 3.05 g / L.

[0052] The above shows and describes 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 to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached 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 provided 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 at 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). A second spring (22) is fixedly connected inside the support rod (21). A telescopic rod (23) is slidably connected to a position inside the support rod (21) corresponding to one end of the second spring (22). An erasing layer (24) is fixedly connected to one end of the telescopic rod (23). A lifting rod (25) is rotatably connected to the top of the rotating ring (18).

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 bottom end of the pressure-bearing block (13) is arranged in an arc shape, the top end of the extrusion block (14) is arranged in an arc shape, and the net box (2) and the floating plate (3) are both located inside the breeding box (1).

6. The device for multi-nutrient mixed cultivation of shrimp, shellfish and gallbladder in seawater according to claim 1, characterized in that: One end of the guide rod (19) is slidably docked inside the orientation groove (16), and the connection position between the guide rod (19) and the orientation groove (16) is spherical.

7. The device for multi-nutrient mixed cultivation of shrimp, shellfish and gallbladder in seawater according to claim 1, characterized in that: 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.

8. 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).

9. A method for using the seawater multi-nutrient mixed culture device for shrimp, shellfish and gallbladder according to any one of claims 1 to 8, 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.

10. The method for using the seawater multi-nutrient mixed culture device for shrimp, shellfish and gallbladder according to claim 9, 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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