CN107751072A - The aquafarm that a kind of artificial marine habitat by protecting and promoting juvenile growth is built - Google Patents

Abstract

A marine ranch constructed by artificial fish reefs that protect and promote the growth of juvenile fish, including a plurality of concrete artificial fish reefs composed of top panels, bottom panels and 4 side panels, characterized in that the reefs are ladders Platform structure, the above-mentioned top panel and side panels are all provided with openings; the openings are equipped with a sorting device suitable for the size of the fish body and screening juvenile fish, the frame fixed on each opening and the magnetic frame fixed on the frame Composed of bars of material and imitation seaweed wrapped around the bars, only smaller sized juveniles pass through to enter the reef for shelter. A number of nutrient dishes are hung on the top panel of the reef body, and crab shell powder is filled inside, which can improve the immunity of juvenile fish, promote the growth of juvenile fish, and reduce the mortality of juvenile fish. In the above-mentioned marine ranch, the reefs around the center of each artificial reef are arranged in the form of concentric circles, and the distance between two adjacent circles of reefs is 5m. The invention has a simple structure and improves the survival rate of juvenile fish so as to realize the purpose of multiplication of fishery resources.

Description

A marine ranch built with artificial reefs that protect and promote the growth of juvenile fish

technical field

The invention belongs to marine fishery engineering facilities, in particular to a marine ranch constructed by artificial fish reefs that protect and promote the growth of juvenile fish.

Background technique

As the global population continues to increase, people's demand for protein is also increasing, and aquatic products have become one of the main sources of high-quality protein. As one of the main ways to improve marine aquatic products in our country, marine ranching has received more and more attention. Marine pastures can create an ecological environment suitable for the survival of biological seedlings released into seawater, scientifically manage and detect the ecological environment and biological resources in reef areas, and finally achieve the purpose of increasing marine fishery resources and improving the structure of marine fisheries. The "blue granary" of high-quality protein. At present, marine pastures mainly increase the output of offshore fishery resources by building artificial reefs to repair algae farms, multiply and release fish, shrimp and shellfish. However, through research, it has been found that the annual proliferation and release of fish, shrimp and shellfish can have a certain restoration effect on the restoration of offshore fishery resources and has been adopted by coastal provinces and cities. However, compared with the high fishing situation of China's offshore fishery resources, this resource restoration effect It is still limited, and a large amount of funds will be invested in breeding and releasing every year. And studies have found that after breeding and release, juveniles are often threatened by predators and harsh environments in natural seas, so they have a very high mortality rate. Therefore, it is an urgent problem to be solved to develop a marine pasture that can multiply juveniles to improve the survival rate of juveniles, optimize the protection of juveniles, ensure the effect of proliferation and release to a greater extent, and protect the original juveniles in nature. .

Contents of the invention

The purpose of the present invention is to build a marine ranch constructed by artificial fish reefs that protect and promote the growth of juvenile fish, which can not only ensure the effect of breeding and releasing to a greater extent, but also protect the original juvenile fish in nature.

In consideration of protecting juvenile fish from predators, a sorting device is provided at the openings of the side panel and the top panel of the reef body. The sorting device is composed of a frame fixed on each opening, a fence fixed on the frame and imitation seaweed wound and wrapped on the fence. The imitation seaweed is flexible and can attract fish to avoid enemies.

In consideration of improving the survival rate of juvenile fish, a nutrient dish is arranged inside the reef body, and the nutrient dish is filled with crab shell powder separated out through the screen window. The main component of crab shell powder is chitin, which can improve the immunity of juvenile fish, reduce the mortality rate of juvenile fish, and promote the growth and development of juvenile fish.

In consideration of providing a suitable growth environment for algae, the fence on the sorting device is made of magnetic material NdFeB. According to the biological magnetic field effect, using magnetic materials to make fences can better promote the growth of algae and provide sufficient food for young fish.

Considering that juveniles are accustomed to living near reefs, the marine pasture of the present invention is constructed by specially designed and placed artificial reefs that can protect and promote the growth of juveniles, and provide a suitable habitat environment for juveniles. In the marine ranch, the artificial reefs are arranged in concentric circles around the central reef, and the distance between two adjacent circles of reefs is set to 5m.

Therefore, technical scheme of the present invention is:

A marine pasture constructed by artificial fish reefs that protect and promote the growth of juvenile fish, including a plurality of concrete artificial fish reefs composed of a top panel, a bottom panel and 4 side panels, is characterized in that the reef is a ladder In the platform structure, the above-mentioned top panel and side panels are all provided with openings; the openings are provided with a sorting device suitable for the size of the fish body and screening juvenile fish.

The sorting devices provided on the above-mentioned openings are composed of frames fixed on each opening, fences fixed on the frames, and imitation seaweed wrapped around the fences. The size is 25-45mm, and only smaller juveniles are allowed to pass through to enter the reef to avoid. The fence is made of magnetic material NdFeB. The imitation seaweed is a commercially available corrosion-resistant fiberglass product.

The above-mentioned top panel suspends a plurality of nutrition dishes. The nutrition dish is provided with a screen window, and the nutrition dish is filled with crab shell powder with a grain thickness of 50-80 mesh.

Oyster shells and gravel are placed in the above-mentioned reef to promote the attachment of algae and provide food for juvenile fish entering the reef.

The inclination angle of the side panel of the above-mentioned reef body is 45 °, so that juvenile fish can enter and exit the sorting device smoothly.

In the above-mentioned marine ranch, the artificial reefs are arranged in concentric circles around the central reef, and the distance between two adjacent circles of reefs is set to 5m.

The present invention has the following beneficial effects: the reef of the present invention is provided with a sorting device, so that juvenile fish can smoothly enter the interior of the reef to protect young fish from predators; It can improve the immunity of juvenile fish, promote the growth and development of juvenile fish, improve the survival rate of juvenile fish to make them grow healthily, and realize the real multiplication of fishery resources; oyster shells and gravel are placed in the reef of the present invention to promote algae growth. effective attachment to provide bait for juvenile fish; the reefs of the present invention are arranged in the form of concentric circles around the central reef to expand the effective range of protection of juvenile fish, and the arrangement is economical and reasonable.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the artificial reef body of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the artificial reef body of the present invention.

Fig. 3 is a three-dimensional schematic view of the nutrition dish of the present invention.

Fig. 4 is a schematic diagram 1 of the overall structure of the present invention.

Fig. 5 is a schematic diagram 2 of the overall structure of the present invention.

Among them: 1. Reef body, 2. Top panel, 3. Side panel, 4. Bottom panel, 5. Opening, 6. Sorting device, 7. Frame, 8. Fence, 9. Imitation seaweed 10. Nutrient dish, 11 .Fixed ring, 12. Screen window, 13. Crab shell powder, 14. Oyster shell, 15. Gravel.

Detailed ways

As shown in Fig. 1, a kind of marine ranch constructed by the artificial fish reef that protects and promotes the growth of juvenile fish includes a plurality of artificial fish reef bodies 1 made of concrete made of top panel 2, side panel 3 and bottom panel 4, its characteristics The reef body 1 is a terrace structure, and the above-mentioned top panel 2 and side panel 3 are all provided with openings 5; the openings 5 are all provided with a sorting device 6 suitable for the size of fish body and screening juvenile fish.

The sorting device 6 that is all provided with on above-mentioned opening is made up of the frame 7 that is fixed on each opening 5 and the fence 8 that is fixed on the frame 7 and the imitation seaweed 9 that is wrapped on the fence, and the fence 8 is permanent magnet magnetic bar etc. The spacing is arranged, and the spacing is set at 25-45mm. The fence 8 is made of NdFeB magnetic material. The imitation seaweed 9 is a commercially available corrosion-resistant fiberglass product.

In consideration of improving the survival rate of juvenile fish, a plurality of nutrition dishes 10 are suspended on the top panel 2 in the above-mentioned reef body 1 via a fixing ring 11 . The nutrition dish 10 is provided with a screen window 12, and the nutrition dish 10 contains crab shell powder 13 with particle thickness of 50-80 mesh, and the crab shell powder 13 is separated out through the screen window 12. The main component of the crab shell powder 13 is chitin, which can improve the immunity of juvenile fish, reduce the mortality rate of juvenile fish, and promote the growth and development of juvenile fish.

Oyster shells 14 and gravel 15 are placed in the above-mentioned reef body 1 to promote the attachment of algae and provide food for the juvenile fish entering the reef body 1 .

The inclination angle of the side panel 3 of the above-mentioned reef body 1 is 45°, so that juvenile fish can enter and exit the sorting device 6 smoothly.

In the above-mentioned marine ranch, each reef body 1 is arranged in the form of concentric circles around the reef body 1 located in the center, and the distance between two adjacent circles of reef bodies 1 is set to 5m.

Example 1

As shown in Fig. 1, a kind of marine ranch constructed by the artificial fish reef that protects and promotes the growth of juvenile fish includes a plurality of artificial fish reef bodies 1 made of concrete made of top panel 2, side panel 3 and bottom panel 4, its characteristics The reef body 1 is a terrace structure, and the above-mentioned top panel 2 and side panel 3 are all provided with openings 5; the openings 5 are all provided with a sorting device 6 suitable for the size of fish body and screening juvenile fish. The top panel 2 of the reef body 1 is square with a side length of 1m; the bottom panel 4 is square with a side length of 3m; the reef height of the reef body 1 is 1m and the wall thickness is 10cm. The angle of inclination of side panel 3 is 45 °, so that juvenile fish can pass through sorting device 6 smoothly. The opening 5 of the side panel 3 is located at the center, and the size of the opening 5 is 60cm×85cm. The size of the opening 5 of the top panel 2 is 50cm×50cm, which can ensure the light inside the reef 1, facilitate the growth of algae, and provide bait for juvenile fish entering the reef 1.

The sorting device 6 that is all provided with on above-mentioned opening is made up of the frame 7 that is fixed on each opening 5 and the fence 8 that is fixed on the frame 7 and the imitation seaweed 9 that is wrapped on the fence, and the fence 8 is permanent magnet magnetic bar etc. The spacing is arranged, and the spacing is set to 25-45mm, so that only smaller juvenile fish enter the reef body 1 to avoid. The fence 8 is made of NdFeB magnetic material. The imitation seaweed 9 is a commercially available corrosion-resistant fiberglass product.

In consideration of improving the survival rate of juvenile fish, a plurality of nutrition dishes 10 are suspended on the top panel 2 in the above-mentioned reef body 1 via a fixing ring 11 . The nutrition dish 10 is provided with a screen window 12, and the nutrition dish 10 contains crab shell powder 13 with particle thickness of 50-80 mesh, and the crab shell powder 13 is separated out through the screen window 12. The main component of the crab shell powder 13 is chitin, which can improve the immunity of juvenile fish, reduce the mortality rate of juvenile fish, and promote the growth and development of juvenile fish. The nutrition dish 10 is a square or a column with a side length of 20 cm. Among the figures, two opposite sides are provided with a screen window 12, and the screen window 12 is a square opening with a side length of 10 cm.

Oyster shells 14 and gravel 15 are placed in the above-mentioned reef body 1 to promote the attachment of algae and provide food for the juvenile fish entering the reef body 1 .

The inclination angle of the side panel 3 of the above-mentioned reef body 1 is 45°, so that juvenile fish can enter and exit the sorting device 6 smoothly.

In the above-mentioned marine ranch, each reef body 1 is arranged in the form of concentric circles around the reef body 1 located in the center, and the distance between two adjacent circles of reef bodies 1 is set to 5m.

Claims (10)

1. A marine pasture constructed by artificial reefs that protect and promote the growth of juvenile fish, including a plurality of concrete artificial reefs composed of top panels (2), side panels (3) and bottom panels (4) (1), it is characterized in that the reef (1) is a terrace structure, and the above-mentioned top panel (2) and side panels (3) are all provided with openings (5); A sorting device (6) for screening juvenile fish based on fish body size. 2. A kind of marine pasture constructed by protecting and promoting the growth of juvenile fish artificial reefs as claimed in claim 1 is characterized in that the sorting device (6) on the above-mentioned reef body (1) is made by being fixed on each The frame (7) on the opening (5), the fence (8) fixed on the frame (7), and the imitation seaweed (9) wrapped on the fence (8) are composed. 3. A kind of marine pasture constructed by protecting and promoting the growth of juvenile fish artificial reefs as claimed in claim 2 is characterized in that the fence (8) on the sorting device (6) on the above-mentioned reef body (1) ) is 25-45mm, and the fence (8) is made of magnetic material NdFeB. 4. A kind of marine pasture constructed by protecting and promoting the growth of juvenile fish artificial reefs as claimed in claim 2 is characterized in that the imitation seaweed ( 9) is a corrosion-resistant fiberglass product wrapped around the fence (8). 5. A kind of marine pasture constructed by protecting and promoting the growth of juvenile fish artificial reefs as claimed in claim 1, characterized in that the above-mentioned reef body (1) inner top panel (2) passes through the fixed ring (11) Hang multiple nutrient dishes (10). 6. A kind of marine pasture constructed by protecting and promoting the artificial reefs of juvenile growth as claimed in claim 5 is characterized in that above-mentioned nutrition dish (10) peripheral sides are respectively provided with screen windows (12), and the nutrition dish (10) containing the crab shell powder (13) with particle thickness of 50-80 mesh, the crab shell powder (13) can be separated out through the screen window (12). 7. A kind of marine pasture constructed by protecting and promoting the growth of juvenile fish reefs as claimed in claim 6 is characterized in that the above-mentioned crab shell powder (13) can improve the immunity of juvenile fish and reduce the mortality of juvenile fish Chitin is the main component. 8. A kind of marine pasture constructed by protecting and promoting the growth of juvenile fish artificial reefs as claimed in claim 1 is characterized in that the oyster shells (14) that promote the attachment of algae are placed in the above-mentioned reef body (1) and gravel (15). 9. A sea pasture constructed by artificial fish reefs that protect and promote the growth of young fish as claimed in claim 1, characterized in that the inclination angle of the side panels (3) of the above-mentioned reef body (1) is 45°. 10. Utilize a kind of marine pasture constructed by protecting and promoting the growth of juvenile fish artificial fish reef according to claim 1, characterized in that each reef body (1) is a concentric circle around the reef body (1) located in the center Arranged in a form, the distance between two adjacent circles of reefs (1) is set to 5m.