Method for breeding sea cucumbers in bathyal half-hanging floating rafts and cages

Abstract

The invention provides a method for breeding sea cucumbers in bathyal half-hanging floating rafts and cages, and relates to the fishery-seawater floating raft and cage breeding. The existing shellfish breeding apparatus such as floating rafts, cages and the like are utilized to breed sea cucumbers through slight adjustment and modification. Large-scale high-density breeding of single shellfishes in a long term causes series problems such as reduction of nutriment, unsmooth water flow and frequent occurrences of disease and insect pest in partial breeding sea areas of Liaoning province; the large-scale paroxysmal death of the shellfishes increases the cost and risk of seawater shellfish breeding. According to the invention, a device is formed by horizontally hanging cages for breeding shellfishes on raft bodies of two rafts, and adjusting the total length (during the low side) of a buoyant rope and a lifting rope to be longer than the distance from the sea surface to the seabed. The device ensures that the cages can be completely sunk to the seabed during the low tide and can be separated from the seabed during the high tide. The invention has the advantages of preventing environment pollution, saving energy and labor, greatly increasing efficiency, and providing new technology and development direction for the alternate culture and mixed culture of sea cucumbers and shellfish.

Description

technical field [0001] The present invention relates to fishery seawater floating raft net cage culture, which is to use the existing breeding equipment such as floating rafts and net cages for cultivating shellfish, and through minor adjustments and changes, to cultivate sea cucumbers in sea areas where shellfish are cultivated or other sea areas where conditions permit . technical background [0002] my country has a vast sea area, and mariculture is developing rapidly, and its aquaculture production ranks first in the world, among which shellfish aquaculture accounts for more than 75% of the total production. Long-term large-scale and high-density single-species shellfish farming has caused ecological imbalance in most of the breeding sea areas such as Liaoning. This large-scale and high-density farming cage provides adhesion and survival conditions for fouling organisms mainly mussels , leading to the decline of seawater nutrients, poor water flow, serious pollution of ...

AI Technical Summary

Problems solved by technology

Long-term large-scale and high-density single-species shellfish farming has caused ecological imbalance in most of the breeding sea areas such as Liaoning. This large-scale and high-density farming cage provides adhesion and survival conditions for fouling organisms mainly mussels , leading to the decline of seawater nutrients, poor water flow, serious pollution of aquaculture sea areas, and frequent occurrence of diseases and insect pests

The low quality of shellfish and the sudden death of a large area increase the cost and risk of marine shellfish farming

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