Culture methods of Haihong

Aquaculture area: culture in the open sea area is chosen because of its fresh water quality and unobstructed water flow. Culture raft: select the raft for breeding chlamys farreri. Breeding equipment: make a rope made of two or three strands of rubber, tie a long rope on it, about 2m, and bind a falling object. Timely release of aquaculture equipment: usually at the end of March every year. Manage Haihong: make regular inspections. Timely harvest: it can be harvested in July, all around the Spring Festival.

I. aquaculture areas and equipment

1. Aquaculture area

In general, breeding Haihong should choose to breed in the outer sea area where the current is relatively smooth and the water quality is relatively fresh, because the water exchange in the inner bay type sea area is relatively poor, the water quality is relatively easy to be polluted, and there is a lack of bait, and so on. Therefore, the fatness of Haihong cultured here is not very high, and there are peculiar smells such as diesel oil.

2. Culture raft

In fact, it is a raft for culturing chlamys farreri. Generally, the length of the raft is about 80m. The floating system is about 3m long, and 30-40 can be added at one time.

3. Breeding equipment

A two-or three-strand rope made of rubber is about 1.5-1.8m long and weighs about 1-1.5kg, then tie a rope about 2m long on it and drop a stone weighing about 0.5kg.

2. Timely release of breeding equipment

Generally, aquaculture equipment is put in at the end of March every year, and the fatness of Haihong is tested every day. For example, if Haihong suddenly loses weight and lays eggs in large numbers, it can timely put in aquaculture equipment according to the specific culture area and let it collect seedlings naturally.

Third, manage Haihong

Aquaculture Haihong management is relatively simple, regular inspection of the sea area, in case of broken frame entanglement, must be timely adjustment of buoyancy.

IV. Timely harvest

1. Harvest can be carried out in time according to the density and area of seedlings. Generally, Haihong can be harvested when it grows to 1-1.5cm in July, which can be sold to shrimp pond farmers as bait or to farmers as seedlings.

2. It is necessary to peel off all the Haihong adsorbed on the rubber during the harvest, and then choose a better attached Haihong block to clip on the rubber, each piece of about 0.2-0.3 kg, with an average of about 5-6 pieces.

3. If Haihong does not become a block, you can use the method of wrapping seedlings. First, wrap 1-1.5 kg of seedlings with a net on the rubber, then fix them with rope, and remove the net in about 3 days.

4. The method of clamping seedlings in Haihong culture is relatively simple, and the method of seedling preservation is more troublesome, but the attachment and growth of Haihong in seedling preservation culture are better than those in seedling clamping method.

5. Generally, only about 5% of the sea rainbow is left to continue to grow, and most of the sea rainbow adsorbed on the rope, root, floating and floating stem can be harvested more than 1200 kilograms.

6. Generally, the whole harvest is carried out before and after the Spring Festival, and each raft can produce more than 2800 kg through the re-clamping of seedlings.