Marine ecological breeding net cage

Abstract

The invention provides a marine ecological breeding net cage, and belongs to the technical field of aquaculture. The marine ecological breeding net cage solves the problems that an existing marine breeding net cage cannot be effectively adapted to ocean current direction change and thus breeding excrement leaks and parts of algal culture objects are insufficient in nutrition. The marine ecological breeding net cage comprises a net cage body and an algal culture floating frame. The algal culture floating frame is located on the side portion of the net cage body, and the algal culture floating frame and the net cage body are connected through a pulling rope. A circular supporting frame is fixedly connected over the net cage body. The supporting frame is connected with two sliding sleeves in a sliding mode. The pulling rope is arranged on the algal culture floating frame in a penetrating mode, and the two ends of the pulling rope are each connected to one sliding sleeve. When the ocean current direction is changed, ocean currents push the position of the algal culture floating frame to be changed, so that the algal culture floating frame is located at the downstream position of the net cage body all the time, residual feeds and excretion waste caused by cultivation can be better utilized and treated, the ecological breeding mode is improved and environmental pollution is reduced.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and relates to a net cage for marine ecological cultivation. Background technique [0002] With the improvement of aquaculture technology and the increase of human demand for aquatic products, the aquaculture industry has developed rapidly around the world. In 2010, my country's aquaculture output exceeded 36.73 million tons, accounting for 61.4% of the world's total output. The development of aquaculture has made important contributions to solving poverty, ensuring food security, promoting the development of the marine economy, and increasing employment and income of fishermen. However, in recent years, with the increase of breeding density and the continuous expansion of breeding scale, the deterioration of the ecological environment of breeding sea areas has become more and more serious. The excretion of aquaculture waste and the use of chemicals further aggravated the degree of eutrophi...

AI Technical Summary

Problems solved by technology

Although this invention can cultivate algae while cultivating fish, the algae can produce dissolved oxygen and absorb nutrients to improve the cultivation environment, but in practical applications, due to the periodic changes in the direction of ocean currents, and the floating racks for algae cultivation are all set in the net. Around the tank, the algae breeding floating frame opposite to the ocean current direction will not be able to get sufficient nutrition, and the residual bait and excretion waste produced by the cultivation will easily leak out of the gap between the algae breeding floating frame, which will still cause adverse effects on the environment

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