Device and method for cultivating sea cucumber on seabed by using net cage for cultivating shellfish

Abstract

The invention discloses a device and a method for cultivating sea cucumber on the seabed by using a net cage for cultivating shellfish, which relate to the cultivation of a finery seawater floating raft net cage and use the conventional cultivation appliances such as a floating raft body, a net cage and the like for cultivating the shellfish to cultivate the sea cucumber through small adjustment and change. The shellfish cultivation of long-term large-scale high-density single variety causes seawater nutrient substance decline, unsmooth current and frequent diseases and insect pests in partial cultivating sea areas of Liaoning and the like. The large-area abrupt death of the shellfish increases the seawater shellfish cultivating cost and the risk. The method comprises the following steps: straightening the net cage for cultivating the shellfish, fixing the net cage and a rod-shaped object made of lightweight materials such as a bamboo rod or a wooden rod and the like together by strings to keep the net cage in a supporting state, then connecting the net cage and the raft body through a connecting rope to form a device, and making the integral specific gravity of the net cage in the device slightly larger than the specific gravity of the seawater. The device and the method have the advantages of preventing and controlling environment pollution, saving energy and labor, greatly increasing efficacies and providing new technology and development direction for vertical three-dimensional cultivation of the shellfish and the sea cucumber.

Description

technical field [0001] The present invention relates to fishery seawater floating raft net cage culture, which is to use the existing culture equipment such as the floating raft body and net cage of shellfish to form a device for cultivating sea cucumbers through minor adjustments and changes, and use the device Cultivate sea cucumbers in sea areas where shellfish are raised or in 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 ...

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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