The combination of excellent deep-sea environment and high-yield cage culture technology has changed the traditional simple fishing mode, produced high-quality aquatic products, established efficient market competitiveness and promoted the rapid development of deep-sea cage culture.
There are various methods for aquaculture of aquatic products.Among them, the lifting and suspended metal cage aquaculture, which is composed of deep-sea cage frame, metal net and lifting device that can dive into the water to form a natural fishing ground, has been the choice of most people today. Customers can decide the size of the fish pond by themselves, which is extremely convenient.
What was the traditional sea cage culture like before? In fact, it is to set up rows of frames made of steel in the coastal harbor or semi closed Bay, support these frames with plastic barrels, and then hang box bags on these frames to form a complete set of net boxes. Most of the net cages used in traditional aquaculture in China are Inner Bay floating raft bamboo and wood structure net cages. The net box has the advantages of simple structure, low cost, convenient manufacture and maintenance and simple management. Therefore, for a time, the coast is full of such cages, which are numerous.
However, problems also follow. First of all, the ability of this kind of cage to resist disasters is too poor. The traditional floating raft cage has simple material and structure, which can not resist high-intensity wind and waves, let alone the attack of typhoon. It can only be cultured in the harbor, and some can’t even be cultured in the harbor. Typhoon, red tide, flood, cold wave and other natural disasters will seriously affect the cage. Often after a high-intensity typhoon, the fish rafts and cages are destroyed and devastated. Tens of thousands or even hundreds of thousands of marine fish die in large numbers overnight or escape to the sea. Fish farmers are even more devastated! After the disaster, the government has to spend a lot of money to subsidize the affected fishermen, and countless traditional cage farming have gone bankrupt!
Deep water anti wind and wave cage is coming! In 2013, several opinions of the State Council on promoting the sustainable and healthy development of Marine Fisheries proposed to scientifically develop mariculture, promote deep-water anti wind and wave cage, and encourage qualified fishery enterprises to expand marine offshore aquaculture. In 2016, the guiding opinions of the Ministry of agriculture on accelerating the transformation of fishery mode and structure adjustment proposed to scientifically layout mariculture, protect the beach ecological environment, stabilize the scale of offshore aquaculture, expand the space for offshore aquaculture, and form a new pattern of comprehensive utilization and protection of water and beach resources. The deep-water anti wind and wave cage aquaculture system just meets the new requirements of the green development of modern fisheries and has become an important promotion mode of “transforming and upgrading aquaculture and promoting ecological and healthy aquaculture”.
The suspended metal cage is easy to install and transport, and can be decomposed into a single specification. It can be flexibly combined at the installation site according to the water conditions. In view of the bad situation of large water span and rapid water flow, segmented interception can be implemented to effectively reduce the inconvenience in the installation process. It can also more effectively and better solve the high-strength impact force caused by decomposing the water flow and achieve better results. The installation cost and later maintenance cost are low. After installation, there is no need to maintain and maintain frequently, which saves the huge maintenance cost in the later stage and better saves the labor cost. The reinforced material of anti-corrosion, anti freezing, anti-oxidation and anti purple line is not eroded by seawater, chemicals, chemicals, oil stains and aquatic organisms; No pollution and no damage to the environment. This product has a long service life. Except in case of strong natural force and artificial improper use, it does not need to spend any maintenance fee, repair fee, etc. the assembly is simple, convenient and flexible. The cylindrical structure can carry all kinds of pipeline laying, which can save a large number of maintenance, replacement and overhaul costs.