Pond holding means that the crabs cultivated in that year are caught in a qualified pond for a period of time and then listed for sale. After the raised crab legs become hard feet, they can increase weight, increase weight, increase prices, and facilitate batch supply of markets, thereby increasing economic efficiency. Wannian Town is located in the eastern part of the city of Haimen. It has a wide range of rivers and rivers and a well-developed water system. The model of scientific and technological demonstration households mainly focuses on breeding crabs in adult crab ponds. In order to obtain higher returns and price differences, model households often hold crabs cultivated in the past in one or two ponds and sell them before the Spring Festival. In the past two years, the town's science and technology household guidance instructors have gradually grasped the experience theory of a set of crab pond management related management work through continuous exploration.
I. Holding pool construction
The ponds with abundant water resources, good water quality, and hard substrates should be selected as holding pools. Each pool of 3 to 5 acres, rectangular, east to west is better. The pond should be planted with a certain area of ​​water plants to facilitate the crabs to cling and hide. Surroundings should be provided with fences as anti-escape facilities. The materials can be selected from low-cost aluminum skins and calcium plastic plates.
Second, the holding time and disinfection
The holding pool was built before the end of October. Before the release of crabs, 60 to 75 kilograms of lime were dissolved 10 to 15 days before the whole pool was spilled to kill pests. Sludge in the pool and weeds in the pool are also removed.
Third, feeding
It mainly feeds some animal feeds such as small fish, shrimp, broken snail meat, poultry waste, etc., supplemented with boiled corn, wheat, soybeans, and other plant foods, paying attention to 60 animal feeds for the purpose of fattening crabs. %about. The daily feeding amount is about 10% of the weight of the pond crabs. Each day, it is poured into the food table in the pond one at a time to ensure that the crabs eat well.
IV. Water Quality Management
In the crab pond, cast some flowers, such as found fish floating head, indicating the pool water lack of oxygen, water quality deterioration, should be promptly changed the water, an average of one week to replace the pool of about 1/3 of the water. At the same time, every kilogram of lime (1 meter deep water) can also be splashed once every week.
V. Disease prevention and predator
Due to the high density of crabs raised in ponds, disease prevention should be carried out every half month with a disinfectant Quanchiposa; attention should be paid to observation and care, and corresponding countermeasures should be taken promptly.
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