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Method utilizing buoyant rafts to breed big oysters

A technology of floating rafts and oyster seedlings, which is applied in the field of using floating rafts to breed large oysters, can solve the problems of easy accumulation of silt garbage, easy damage to the environment, and large investment, and achieve the effect of ensuring rapid growth and low environmental impact

Inactive Publication Date: 2018-01-16
浦北县德海种养农产品加工专业合作社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional big oyster breeding method is column culture, which needs to be erected during cultivation, which requires a large investment. Moreover, due to changes in seawater tides, the height of seawater also changes, making it difficult to provide sufficient nutrients for large oysters. In addition, the set up columns are easy to pile up Silt and waste from farming can easily damage the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The method for cultivating large oysters on floating rafts comprises the following steps:

[0020] 1) Choose the offshore sea area with a water depth of 10 meters, salinity not lower than 0.9%, minimum water temperature not lower than 5°C, dissolved oxygen > 5 mg / L, and within 2km from the mangrove edge as the aquaculture sea area; set up buoys in the aquaculture sea area. Raft, the floating raft uses bamboo as the main frame, and the bamboo is in the form of a square grid. An anchor is connected to the water entry end to fix the floating raft on the sea surface;

[0021] 2) Under the floating raft, use a 2-meter rope to suspend the attachment bases (stones) of the large oyster seedlings. The attachment bases are suspended in the seawater by hanging on the ropes at intervals, and 10 attachment bases are hung on each rope. The distance between the uppermost attachment base and the sea surface is 30cm, and the distance between adjacent attachment bases is 5cm; among them...

Embodiment 2

[0024] The method for cultivating large oysters on floating rafts comprises the following steps:

[0025] 1) Select the offshore sea area with a water depth of 20 meters, a salinity of not less than 0.9%, a minimum water temperature of not less than 5°C, a dissolved oxygen > 5 mg / L, and within 0.5 km from the mangrove edge as the aquaculture sea area; set up in the aquaculture sea area Floating raft, the main frame of the floating raft is bamboo and wood. The bamboo wood is in the form of a square grid. The size of each grid is 30cm×200cm. Floatable objects (tyres) are fixed under the bamboo wood. The water entry end is connected to the anchor to fix the floating raft on the sea surface;

[0026] 2) Under the floating raft, use a 4-meter rope to hang the attachment base (shell) of the big oyster seedlings. The attachment base is suspended in the seawater by hanging on the rope at intervals. 20 attachment bases are hung on each rope. The distance between the attachment base at...

Embodiment 3

[0029] The method for cultivating large oysters on floating rafts comprises the following steps:

[0030] 1) Select the offshore sea area with a water depth of 15 meters, salinity not lower than 0.9%, minimum water temperature not lower than 5°C, dissolved oxygen > 5 mg / L, and within 5km from the mangrove edge as the aquaculture sea area; Raft, the floating raft uses bamboo as the main frame, and the bamboo wood is in the form of a square grid. The size of each grid is 20cm×200cm. Floatable objects (empty barrels) are fixed under the bamboo wood, and the edge of the floating raft is pulled by cables. The water entry end is connected to the anchor to fix the floating raft on the sea surface;

[0031] 2) Under the floating raft, use a 1-meter rope to hang the attachment base (shell) of the big oyster oyster seedlings. The attachment bases are suspended on the ropes at intervals and immersed in seawater. 5 attachment bases are hung on each rope, and the topmost The distance betw...

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Abstract

The invention relates to a method utilizing buoyant rafts to breed big oysters. The method comprises the following steps that 1, an offshore sea area with the water depth of 10-20 meters, the salinityof 0.9% or below, the lowest water temperature of 5 DEG C or above and the dissolved oxygen greater than 5 mm / L is selected as a breeding sea area, and buoyant rafts are erected in the breeding sea area; 2, attachment bases where big young oysters attach are suspended under the buoyant rafts by suing ropes of 1-4 meters, and the attachment bases are suspended on the ropes at intervals to be immersed in seawater; 3, the total breeding time is three years, big young oysters with the length of 10-20 mm are suspended for breeding in the first year, the buoyant rafts are fixed in the sea area withthe salinity of 0.9%-1.5% for culture, the buoyant rafts are transferred and fixed to the sea area with the salinity of 1.5%-2% for culture in the second year, and the buoyant rafts are transferred and fixed to the sea area with the salinity of 2-3% for culture in the third year, and big oysters can be collected after the body length of the big oysters exceed 10 cm. By adopting the method, sufficient nutrients can be provided in the breeding process, and environmental destruction can be also reduced.

Description

technical field [0001] The invention relates to the technical field of marine product cultivation, and relates to a method for cultivating large oysters by using floating rafts. Background technique [0002] Big oyster, the scientific name is Jinjiang oyster, is one of the four most valuable seafood in Qinzhou City, Guangxi. The meat can be eaten fresh, or processed into dried oysters and oyster sauce. The protein content of oyster oyster meat exceeds 40%, which is rich in nutrition and delicious in taste. It is known as "milk in the sea" and can also be used as medicine. Maowei Sea in Qinzhou Bay is the largest natural oyster breeding area in the country, and is known as the "Hometown of Chinese Oysters". At present, the city's coastal shoals and deep waters have an area of ​​more than 140,000 mu for planting oysters and hanging them in deep water. There are more than 1.3 million mu of tidal flats for development and breeding. The traditional big oyster breeding method is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/54
CPCY02A40/81
Inventor 刘南麦日桂龙万伸马春燕
Owner 浦北县德海种养农产品加工专业合作社
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