Rising-falling type hard-bottom seawater ecological farming net cage

Abstract

The invention discloses a rising-falling type hard-bottom seawater ecological farming net cage. The rising-falling type hard-bottom seawater ecological farming net cage comprises at least one net cage unit, wherein each net cage unit comprises a hard bottom frame and a surrounding frame which are formed through the intercommunicated connection of a plurality of hollow tubes and a plurality of multi-way tube joints, the bottom frame is provided with a bottom netting coat, a bunker layer is laid on the bottom netting coat, the surrounding frame is wrapped by a surrounding netting coat in a surrounding manner, the interior of the bottom frame and the interior of the surrounding frame are communicated to form a sealed water storage chamber. The rising-falling type hard-bottom seawater ecological farming net cage further comprises at least one water pump which can be used for injecting water into the water storage chamber and pumping water out of the water storage chamber. According to the rising-falling type hard-bottom seawater ecological farming net cage, the bottom of each net cage unit is flat, so that the bunker layer which is suitable for the habitation and growth of benthic reptile aquatics can be laid, and the multi-species three-dimensional ecological farming in the net cage is realized; the feed utilization ratio is high, so that the sewage emission is reduced; water is injected into or discharged from the water storage chamber through the water pump, so that the net cage can freely rise and fall as a whole, the observation is facilitated, and the operation is convenient.

Description

technical field [0001] The invention relates to the technical field of seawater aquaculture net cages, in particular to a lifting type anti-closing hard-bottom seawater ecological aquaculture net cage. Background technique [0002] Seawater cage culture has vast waters in natural sea areas, does not occupy land, and there is no shortage of water sources and conflicts between agriculture and fishery. The development space is huge. In terms of bait investment and fish growth speed, due to the supplement of natural bait in seawater cage culture, the water quality Excellent, its bait coefficient is relatively low, and the fish grows fast. In addition, due to the good quality of fish species cultured in sea cages, the market price is also relatively high. Therefore, marine cage culture is a farming method with low investment and high economic benefits. [0003] There are many defects in the existing marine culture net cages: 1. Because the net clothing has no fixed support, its...

AI Technical Summary

Problems solved by technology

[0003] There are many defects in the existing marine culture net cages: 1. Because the net clothing has no fixed support, its anti-wind and wave ability is poor, and it is easy to close with the impact of tidal current fluctuations. The utilization volume is only 20%, which causes overlapping or frictional damage of the fish breeding species in the net cage, and it is inconvenient to lift the net to observe and clean the net clothes; , is only suitable for breeding fish and shrimp species, and cannot breed benthic reptile seafood, and when the bait is put in, the bait will leak from the mesh of the netting at the bottom of the cage, resulting in a low utilization rate of the bait, so the cultured species is single, low yield

Although the net cage structure can breed aquatic economic crustaceans, it does not have the ability to resist wind waves and tidal fluctuations, nor can it be lifted and observed, so it is only suitable for freshwater aquaculture, not for seawater cage aquaculture

[0006] At present, there is no marine aquaculture cage suitable for mixed culture of fish, shrimp and benthic reptile aquatic products at home and abroad.

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