Net cage for deep sea culture of yellow croakers and culture method

Abstract

The invention relates to the technical field of marine product aquaculture, in particular to a net cage for deep sea cultivation of yellow croakers. The net cage comprises an upper frame and a lower frame, wherein a cage net is fixedly installed between the periphery of the upper frame and the periphery of the lower frame, another cage net is fixedly installed in the middle of the lower frame, counterweight blocks are arranged at the four corner edges of the bottom side of the lower frame through hanging ropes, connecting rods are fixedly installed at the front and rear outer side edges of the upper frame and the lower frame through welding, buoyancy sleeves are nested at the middle ends of the connecting rods, and fixed hanging lugs are welded and fixed to the outer side edges of the front side, the rear side, the left side and the right side of the upper frame. The invention also provides a marine yellow croaker cultivation culture method. Compared with a common pond-type yellow croaker culture method, sufficient water exchange in each group of culture net cages is guaranteed through the flowing of marine water flow and the stable net cage structures rooted on a seabed, and accordingly compared with the pond-type net cage culture method, enhanced activity of fish bodies in water is promoted, the cultured live yellow croakers have rich flesh and are high in weight gain rate.

Description

technical field [0001] The invention relates to the technical field of marine product cultivation, in particular to a net cage for deep-sea cultivation of yellow croaker and a cultivation method. Background technique [0002] Cage culture originated in Cambodia and other Southeast Asian countries at the end of the 19th century, and then spread to all parts of the world. In the 1970s, my country started cage culture. Due to the characteristics of low investment, high output, maneuverability and quick results, cage culture has flourished in lakes, seas and reservoirs all over the country in just a few decades. develop. The head of yellow croaker is blunt and pointed, the mouth is large, the end is inclined, the snout is not protruding, the outermost teeth of the upper jaw are enlarged into canine teeth, the front teeth are larger, but sparse, and the front center has no teeth. The upper part of the body side is purple-brown, the lower part is golden yellow, and the luminous p...

AI Technical Summary

Problems solved by technology

Although China has begun to develop new models such as deep-water cage culture, which can improve the quality of large yellow croaker to varying degrees, the scale and speed of promotion are largely limited by factors such as sea environment, natural disasters, and capital costs.

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