Device suitable for shallow sea raft culture of scapharca broughtonii

Abstract

The utility model discloses a device suitable for shallow sea raft culture of scapharca broughtonii, and belongs to the technical field of aquaculture. The device comprises a plurality of circular separation discs arranged from top to bottom, and a net bag with a cylinder in the middle and cones at the upper end and the lower end is defined by polyethylene nettings on the peripheries of the separation discs; a plurality of partition plate upper recesses are formed in the partition plate and are used for placing scapharca broughtonii. The vertical center of the device is provided with a polyethylene suture rope penetrating through the center of each partition disc, the polyethylene rope is composed of 10-12 strands, so that seedlings can be released and harvested by opening the suture rope, and leakage of scapharca broughtonii can be prevented by suture. The polyethylene netting, the partition disc with the partition disc concave upwards and the like are designed, so that damage of harmful organisms in the process of culturing the scapharca broughtonii can be prevented, and the survival rate of the cultured scapharca broughtonii is remarkably improved. And the device can be conveniently lifted and harvested, can be marketed at any time according to market requirements, solves the problems of difficulty in bottom sowing and catching and low recatching rate, and has greater social and economic benefits.

Description

Technical Field

[0001] The utility model relates to a device for cultivating tidal flat shellfish, in particular to a device suitable for shallow sea raft-type cage cultivation of giant clams. Background Art

[0002] The ark shellfish is a large marine economic clam, commonly known as the red shellfish. It is a tidal shellfish with high nutritional value. Its main habitat is in the soft mud or muddy sandy seabed at a depth of 3-50m. Because of its delicious taste and rich nutrition, it is deeply loved by Chinese and foreign consumers, making it one of the main marine economic shellfish for my country's export and foreign exchange earnings. At present, the cultivation of ark shellfish in my country is mainly based on bottom seeding and release. Because bottom seeding and reproduction are vulnerable to invasion by predators and harmful organisms, the survival rate is low. In addition, the bottom harvesting is troublesome, the harvesting is difficult, and the workload is large. As a result, the bottom seeding and release of ark shellfish have a low recapture rate, and the yield and efficiency are not high, which seriously affects the enthusiasm for breeding. At the same time, it cannot be put on the market at any time according to market demand throughout the year.

[0003] Therefore, the market urgently needs to develop a new device suitable for raft culture of giant clams to overcome the defects of existing giant clams breeding methods. Summary of the invention

[0004] The utility model aims to provide a device suitable for shallow-sea raft culture of giant clams to make up for the shortcomings of the prior art.

[0005] A device suitable for shallow-sea raft culture of giant clams comprises a plurality of circular partition plates arranged from top to bottom, wherein the periphery of the partition plates is surrounded by polyethylene netting to form a net bag with a cylinder in the middle and vertebral bodies at the upper and lower ends; and the partition plates are provided with a plurality of partition recesses for placing giant clams.

[0006] Furthermore, a polyethylene suture rope penetrating through the center of each partition is provided at the vertical center of the device. The polyethylene rope is composed of 10-12 strands, so that the suture rope can be opened to release seedlings and harvest, and the suture rope can be sewn to prevent the giant clams from escaping.

[0007] Furthermore, a polyethylene sling is provided above the device, the polyethylene sling consists of 50-60 strands and is used for being fastened to the raft frame.

[0008] Furthermore, a polyethylene falling rope is provided below the device, the polyethylene rope is composed of 15-18 strands, and a falling stone is tied below the polyethylene rope.

[0009] Furthermore, the concave portion on the partition plate has a diameter of 1.5 cm to 2.0 cm and a depth of 0.6 cm to 1.0 cm.

[0010] Advantages and beneficial effects of the utility model:

[0011] The utility model can prevent damage from harmful organisms during the cultivation of giant clams by designing polyethylene nets, partition plates with concave partition plates, etc., and significantly improve the survival rate of giant clams. In addition, the utility model can be easily hoisted and harvested, and can be put on the market at any time according to market demand, overcoming the problems of difficulty in bottom seeding and catching and low recapture rate, and has great social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0013] Among them, 1. spacer, 2. concave on the spacer, 3. polyethylene net, 4. polyethylene suture rope, 5. polyethylene pendant rope, 6. pendant stone, 7. polyethylene suspension rope. DETAILED DESCRIPTION

[0014] The present invention is further described below with reference to specific embodiments and accompanying drawings.

[0015] Example:

[0016] like Figure 1 As shown, a device suitable for shallow-sea raft culture of giant clams comprises a plurality of circular partitions 1 arranged from top to bottom, the outer periphery of the partitions 1 is surrounded by a polyethylene net 3 to form a net bag with a cylindrical center and vertebral bodies at the upper and lower ends; the partitions 1 are provided with a plurality of partition recesses 2 for placing giant clams. A polyethylene suture rope 4 is provided at the vertical center of the device, which runs through the center of each partition 1. The polyethylene rope is composed of 10-12 strands, so that the suture rope can be opened to release seedlings and harvest, and the suture rope can prevent giant clams from escaping; the upper end of the polyethylene suture rope 4 is sutured and fixed with the polyethylene net and the polyethylene hanging rope 7, and the lower end of the polyethylene suture rope 4 is sutured and fixed with the polyethylene net and the polyethylene pendant rope 5, so as to play the role of overall suture. A polyethylene hanging rope 7 is provided above the device, which is composed of 50-60 strands and is used to be tied to the raft frame. A polyethylene pendant rope 5 is provided below the device, which is composed of 15-18 strands, and a pendant stone 6 is tied below it.

[0017] In one embodiment, a circular partition plate 1 with a diameter of 30 cm-35 cm is made of polyethylene plastic, and a partition plate upper depression 2 with a diameter of 1.5 cm-2.0 cm and a depth of 0.6-1.0 cm is provided on the partition plate 1. The number of the partition plates can be 40-50, and each upper depression can culture a clam. The spacing between the partition plates is 15 cm-20 cm, and the partition plates are connected together through polyethylene nets 3 to form a three-dimensional culture cage. The bottom of the cage is tied with a 1.0-1.5 kg drop stone 6 with a 15-18 strand polyethylene drop rope 5 to maintain the cage upright and not washed away by the current. Finally, the device uses a 50-60 strand polyethylene suspension rope 7 to tie the cage to the raft frame.

[0018] In one embodiment, the size of the holes in the polyethylene net can be determined according to the size of the cockle fry to be grown, generally less than 1.5 cm, and the number of net layers is generally 10-14 layers, and the specific number of layers is determined according to the water depth of the aquaculture area and the convenience of operation.

[0019] When in use, 500-600 cockle seedlings of 1.5cm-2.0cm that meet the breeding specifications are loaded into the device, and then hung on a raft frame suitable for cockle breeding in the sea area for shallow sea raft breeding. After 6 months of breeding, it can be put on the market at any time according to market demand.

[0020] The utility model can directly place the giant clam seedlings in a net cage and sink them into the breeding area on the seabed. The utility model has the advantages that on the one hand, the giant clam seedlings can be protected from harm by harmful organisms in the net cage, thereby improving the survival rate; on the other hand, it is easy to harvest, thus overcoming the difficulty of bottom sowing and catching, and all of them can be harvested.

[0021] On the basis of the above embodiments, the present invention continues to provide a detailed description of the technical features involved therein and the functions and roles played by the technical features in the present invention, so as to help technicians in this field fully understand the technical solution of the present invention and reproduce it.

[0022] Finally, although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A device suitable for shallow-water raft culture of giant clams, characterized in that: The device comprises a plurality of circular partition plates (1) arranged from top to bottom, wherein the outer periphery of the partition plates (1) is surrounded by a polyethylene net (3) to form a net bag with a cylindrical center and vertebral bodies at the upper and lower ends; and the partition plates (1) are provided with a plurality of partition recesses (2) for placing cockles.

2. The device according to claim 1, characterized in that A polyethylene suture rope (4) is provided in the vertical center direction of the device and passes through the center of each partition (1). The polyethylene suture rope (4) is composed of 10-12 strands, so as to open the polyethylene suture rope (4) to release seedlings and harvest. The polyethylene suture rope (4) is sutured to prevent the giant clams from escaping.

3. The device according to claim 1, characterized in that A polyethylene sling (7) is provided above the device. The polyethylene sling (7) is composed of 50-60 strands and is used for being tied to the raft frame.

4. The device according to claim 1, characterized in that A polyethylene pendant rope (5) is provided below the device. The polyethylene pendant rope (5) is composed of 15-18 strands and a pendant stone (6) is tied below the polyethylene pendant rope (5).

5. The device according to claim 1, characterized in that The concave portion (2) on the partition plate has a diameter of 1.5 cm to 2.0 cm and a depth of 0.6 cm to 1.0 cm.

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