CN204837559U - Cultchless oyster off -lying sea deep water culture device - Google Patents

Abstract

The utility model discloses a single oyster off-sea deep-water culture device. The breeding device is a net cage, the net cage is a cuboid frame made of steel bars, the top of the frame is provided with a suspension rope, which is used to be tied to the raft frame for cultivation, and the bottom four corners of the frame are provided with legs. There are multiple layers of drawers inside the frame; six layers of drawers made of polypropylene plastic mesh are arranged inside the frame; multiple partitions are arranged at the bottom of the drawers. The utility model can directly put single oyster seedlings in the drawer net box by using the oyster breeding device, and hang them on the deep water raft frame in the open sea. Low, at the same time, the cages are not easily damaged by oysters and can be used repeatedly.

Description

A deep-water aquaculture device for single oysters

technical field

The utility model relates to a single oyster cultivation device, in particular to a single oyster cultivation device in the deep water area of the open sea.

Background technique

Individual oysters are oysters that are free and without anchorage. Oysters have the living habit of flocking. Many oysters are often fixed together. Due to the limitation of growth space, the shell shape is extremely irregular, which greatly affects the appearance. The flocking also causes oysters to compete for food, affecting their growth rate. Clustering also increases the workload for harvest stripping and processing. Individual oysters are not limited by the growth space due to their freeness, so the shell shape is regular and beautiful, and the size is uniform, which can improve the quality and grade of oysters. Therefore, it is expensive, has significant benefits, and is easy to stock and harvest.

At present, the oyster farming method in my country is mainly raft-type hanging rope farming. Because the oysters cultured on the rope are easy to fall off as the oysters grow up, they are not suitable for open seas and sea areas with strong waves, but only for calm inner bays, and the breeding range is limited; A small amount of scallops are used to cultivate individual oysters in net cages. However, during the cultivation process, the edges of the oyster shells are extremely sharp and easy to cut the net cages. On the one hand, the growing cages are damaged and cannot be used, which increases the cost of breeding, and is also not suitable for open seas and sea areas with strong wind and waves. However, the available coastal harbors and coastal waters have basically been developed and utilized, and many farms have aged due to years of breeding, excessive density, and silt accumulation, resulting in slow growth of shellfish, small individuals, long breeding cycles, many diseases, and survival. The lowering of the rate has affected the enthusiasm for farming, and the coastal waters have become more and more polluted, and the oysters cultured cannot meet the quality requirements for raw food; the deep water area of the outer sea directly faces the sea, the sea current is fast, the tide rises twice a day, the seawater exchange volume is large, and the water quality is good. The bait organisms are sufficient, suitable for the growth of oysters and other shellfish, and can cultivate high-quality oysters suitable for raw consumption, which can bring considerable export benefits.

Therefore, there is an urgent need for a method and device suitable for growing single oysters, which can meet the needs of large-scale, industrialized and suitable for deep-water cultivation of single oysters, so as to improve the quality of oysters and reach the level of eating raw for export. It not only improves the utilization rate of the deep water area in the open sea, but also brings higher economic benefits.

Contents of the invention

The purpose of this utility model is to provide a device suitable for single oyster culture in the deep water area of the open sea. The deficiencies in the existing single oyster culture device.

In order to achieve the above object, the concrete technical scheme that the utility model takes is:

A single oyster off-sea deep-water culture device is characterized in that the culture device is a net cage, the net cage is a cuboid frame made of steel bars, and the top of the frame is provided with a hanging rope for being tied to the raft For breeding, the bottom four corners of the frame are provided with outriggers, and multi-layer drawers are arranged inside the frame; polyethylene screens are also covered outside the device.

Inside the frame are 6 layers of drawers made of polypropylene plastic mesh.

The bottom of the drawer is provided with a plurality of partitions for placing individual oysters.

The frame is a cuboid frame with a length of 100-150 cm, a width of 60-80 cm and a height of 200-220 cm made of steel bars with a diameter of 8-10 mm.

The drawer is a cuboid with a length of 100-150cm, a width of 60-80cm and a height of 30-35cm.

The sling is 80-100 strands of polyethylene rope.

The aperture of the polypropylene plastic mesh is 1.5-2.0cm.

The utility model provides a device for cultivating single oysters in deep water in open sea. By using the device for culturing single oysters, the seedlings of single oysters can be directly placed in a drawer net box and hung on a raft frame in deep water in open sea. The device is not easy to be damaged and is durable The net cage is not easily damaged by oysters and can be used repeatedly because it is subject to rapid currents and strong winds and waves in the open sea, and the production cost is relatively low. The cultivation device can provide a more high-quality natural environment for the growth of oysters, without adding bait, the oysters grow quickly, are free from pollution, and have high quality.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present utility model.

Fig. 2 is a schematic diagram of the structure of the drawer in the utility model.

Among them, 1-frame; 2-hanging rope, 3-outrigger; 4-drawer; 5-polypropylene plastic net; 6-partition; 7-polyethylene screen.

Detailed ways

Below through specific embodiment and in conjunction with accompanying drawing, the utility model is further described.

As shown in Fig. 1, 2, the utility model is a net cage, and this net cage is made the rectangular parallelepiped frame 1 of long 100-150cm, wide 60-80cm, high 200-220cm by the steel bar that diameter is 8-10mm, this frame The top of 1 is provided with 80-100 strands of suspension rope 2, is used for being tied on the raft frame so that carry out breeding, and the bottom four corners of frame 1 is provided with support leg 3, and described frame 1 is provided with 6 layers of drawers 4, and this drawer 4 Be that 1.5-2.0cm polypropylene plastic net 5 is made by aperture, its specification is length 100-150cm, width 60-80cm, height 30-35cm, and the bottom of this drawer 4 is provided with a plurality of clapboards, it is divided into different interval.

When the utility model is used, 1500-2200 individual oyster seedlings are placed on average in 6 drawers 4, and then the drawers are discharged in the frame 1, and the outside of the frame 1 is covered with a polyethylene screen with an aperture of 2-3cm 7. For preventing predators and harmful organisms and attachments, tie the sling 2 on the top of the frame 1 to the raft frame for marine culture, use a boat and a crane to place the culture device in the deep-water culture area in the open sea, and place a single oyster culture device per mu 100-120. During the breeding period, the breeding device is lifted every 3 months, and the attachments on the outside of the cage are removed with a high-pressure water gun. After 1.5-2.5 years of breeding, it reaches the commercial specification, and then the breeding device is lifted by a boat and a crane, and the harvest is mature. individual oysters.

The above-mentioned embodiments are only for illustrating the technical conception and characteristics of the present invention, and are not intended to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (8)

1. A single oyster off-sea deep-water culture device, characterized in that the culture device is a net cage, the net cage is a cuboid frame (1) made of steel bars, and the top of the frame (1) is provided with a suspension rope (2) is used to be tied to a raft frame for breeding, the bottom four corners of the frame (1) are provided with outriggers (3), and the frame (1) is provided with multi-layer drawers (4). 2. The single oyster off-sea deep-water culture device according to claim 1, characterized in that, the frame (1) is provided with 6 layers of drawers (4) made of polypropylene plastic nets (5). 3. The single oyster off-sea deep-water culture device according to claim 1 or 2, characterized in that, the bottom of the drawer (4) is provided with a plurality of partitions (6). 4. The single oyster off-sea deep-water culture device as claimed in claim 1, characterized in that, the frame (1) is made of a steel bar with a diameter of 8-10mm and is 100-150cm long, 60-80cm wide, and 100-80cm high. 200-220cm cuboid frame. 5. The single oyster off-sea deep-water culture device according to claim 1 or 2, characterized in that the drawer (4) is a cuboid with a length of 100-150 cm, a width of 60-80 cm, and a height of 30-35 cm. 6. The single oyster off-sea deep-water aquaculture device according to claim 1, characterized in that, the sling (2) is a polyethylene rope of 80-100 strands. 7. The deep-water cultivation device for individual oysters in open sea as claimed in claim 2, characterized in that the pore diameter of the polypropylene plastic net (5) is 1.5-2.0 cm. 8. The device for cultivating individual oysters in open sea in deep water according to claim 1, characterized in that the device is covered with a polyethylene screen (7).