CATDOLL : CATDOLL: Oyster farming is very complicated. What are the precautions?

Oyster farming is very complicated. What are the precautions?

There are generally four types of oyster farming methods, namely cutting, hanging, flat hanging and floating shed. The first three are all raised in the intertidal zone and can be fixed and exposed to the sun at low tide; floating shed oysters are immersed in the deep sea for a long time, rich in nutrients, grow fast and fat. At first, oyster shells were tied directly to bamboos split in half and inserted on the beach to let the oysters grow naturally, saving costs and manpower, but the growth rate was slow. The advantage is to use foam glue directly as a float, connect the middle layer with ropes, and then extend the vertical hanging ropes to hang several strings of oysters, also called rope farming, and the hanging depth is very deep, reaching three stories high.

They are more vulnerable to flatworms. This process must be completed during oyster farming, especially after a typhoon. Fu Miaoqi cleaned up the sea surface in time. For the article on concrete-cured oysters, impurities and attachments attached to the seedlings should be removed in time. If the broken rope of the casing string falls into the mud, it should be hung up in time. Attention should be paid to prevent the cut rope from being washed away and the scaffolding from collapsing. It should be reinforced in time before the typhoon season. Oysters are efficient aquaculture, and both price and demand are a good rural entrepreneurial project, but we must master specific methods and management techniques during the breeding process and cannot blindly follow the trend.

Bamboo planting is planting bamboo on the seabed. It should be noted that there are many ways to deal with bamboo. Generally speaking, 6 bamboos are grouped together, and the overall shape is like an inverted funnel, placed on the sea mud. The length of each bamboo should be about 1.5 meters and the diameter should be more than 10 centimeters. The thick part in contact with the seabed is fixed with ropes to prevent the bamboo from being washed away by the current.

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The water from the well can't be used for the worms, but seawater should be used. When the worms are cultured for three months, some nutrients should be added to the water. The density of the culture should not be too large, and no more than 30 per cubic meter.

Things to note when farming oysters: change water frequently, apply anthelmintics regularly, avoid wind and sun, block big fish from entering the farming area, check water temperature regularly, etc.

Pay attention to moving stones around oysters to prevent them from being suffocated by mud, pay attention to flood control and fattening, avoid human trampling, pay attention to dredging ditches, strengthen management, capture their natural enemies, and pay attention to wind protection.

What are the environmental requirements for oyster farming?

Oyster farming is very common. What are the environmental requirements for oyster farming?

1. There are many ways to cultivate oysters. With the continuous development of aquaculture, new aquaculture methods and technologies are constantly emerging. Among them, the more common ones are bamboo culture, bottom seeding culture, rock standing stone culture, hanging culture, etc. Among them, hanging aquaculture is divided into grid type, rope type and raft type. Regardless of the aquaculture method or method, the key is to choose the aquaculture site, which should be determined within its adaptability range according to the living habits of oysters and the requirements of oysters for environmental factors. In addition, the degree of pollution of harmful industrial and agricultural wastewater should also be considered. The breeding and management of any variety is an important link. The management of vertical aquaculture of long oysters mainly includes: timely evacuation of aquaculture density, adjustment of aquaculture water layer, reinforcement of typhoon prevention, and anti-sinking (raft).

2. Oyster and Shrimp Mixed Culture

1. Selection of shrimp pond: The shrimp pond for oyster co-culture should be made of silt or muddy sand, with a water depth of more than 1.3 meters and an average daily water exchange rate of about 50%. The transparency should be controlled at 40-50 cm in the early stage and 50-60 cm in the middle and late stages.

2. Site layout: Before stocking the fry, thoroughly dredge the silt and use a bulldozer or other tool to level and compact the bottom of the pond where the oyster fry play, making it slightly convex and slightly higher than the surrounding bottom to prevent the oyster fry from sinking and being buried in the silt and dying.

3. Seeding: Under the premise of ensuring the normal stocking density of shrimp, the optimal seeding amount of oyster seedlings is about 30,000 per 667 square meters. The sowing time should be selected in early April, and the seedling seed player specifications should be more than 2 cm in shell length. The seedlings should be evenly stressed and should avoid the low-lying areas of the ring ditch and the feeding area. The sowing area refers to the area of ​​the seedlings occupying 1/4 to 1/3 of the bottom area of ​​the pond.

3. Stone-throwing culture: The stones that were once used as oyster seed pickers are now used as oyster culture equipment. Oysters with a short growth period can be cultured in the nursery; oysters with a long growth period by the river should be moved to the breeding farm for culture. There are three cultivation methods: starry sky, plum blossom, and determinant.

1. Baby's breath: Oysters and stones mixed with friends, arranged irregularly.

2. Plum blossom style: usually 5 to 6 oyster stones in a group.

3. Determining factors: row width is 0.5 ~ 1m, row spacing is 0.6 ~ 1.5m, deep water farming can be carried out, and no management is required from throwing stones and picking seedlings to harvesting.

The above is all about the common oyster farming and the environmental requirements for oyster farming. I hope it will be helpful to you.