Raising crabs through the pond to raise commodity crabs can have the effect of forcing fat, increasing weight, and softening the hard crab as a hard-footed crab. At the same time, it can also be sold in time according to market conditions and increase the economic benefits of raising crabs. Should focus on the following major technical points:
First, the holding pool construction. It is necessary to build a pool where there is plenty of water, good water quality, a hard bottom, and a quiet environment. 3-5 acres per pool is appropriate, the rectangle is better. Crab ponds should be kept in an area of ​​2/3 to 3/4 for deep-water areas (the depth of the water level is controlled at 1.5-2.0 meters), and the rest for shallow water areas (the water depth is controlled at 0.3-0.4 meters) and planted with aquatic plants. Fence facilities should be cheap and applicable, such as aluminum skin, plastic film and so on.
Second, the holding time and disinfection. It is required that the holding pool be built before the end of September and 60-75 kg of quick lime should be dissolved per acre 10-15 days before the crabs are raised. The whole pool is then splashed to kill pests.
Third, holding specifications and quality. The specifications for holding commodity crabs should be 100 grams or more. The body is required to be sound, active, and disease-free. At the same time, the male and female crabs should be raised separately.
Fourth, feeding crabs. The main feed is small fish, shrimp, broken snails, oyster meat, poultry waste and cooked corn, wheat, soybeans and other fine materials. The daily feeding is about 10% of the body weight of the pond crabs. Each morning and afternoon, it is injected into the food table in the pond. The amount of feed is 30% in the morning and 70% in the afternoon to ensure that the crab eats well.
Fifth, water quality management. In the crab pond, put less flowers and white locusts. If fish floating heads are found, it indicates that the pool water is deprived of oxygen and the water quality is deteriorated. The water should be replaced in time. Every 5-7 days, Quan Li splashes lime once, and uses 13-15 kilograms of lime per acre (with an average depth of 1 meter), and replaces about 1/3 of the pool's water every 6-7 days.
Sixth, against predators, diseases. Pay attention to observation and care, and find that the enemy and the disease should take appropriate measures in time to ensure the smooth and safe listing of crabs.
First, the holding pool construction. It is necessary to build a pool where there is plenty of water, good water quality, a hard bottom, and a quiet environment. 3-5 acres per pool is appropriate, the rectangle is better. Crab ponds should be kept in an area of ​​2/3 to 3/4 for deep-water areas (the depth of the water level is controlled at 1.5-2.0 meters), and the rest for shallow water areas (the water depth is controlled at 0.3-0.4 meters) and planted with aquatic plants. Fence facilities should be cheap and applicable, such as aluminum skin, plastic film and so on.
Second, the holding time and disinfection. It is required that the holding pool be built before the end of September and 60-75 kg of quick lime should be dissolved per acre 10-15 days before the crabs are raised. The whole pool is then splashed to kill pests.
Third, holding specifications and quality. The specifications for holding commodity crabs should be 100 grams or more. The body is required to be sound, active, and disease-free. At the same time, the male and female crabs should be raised separately.
Fourth, feeding crabs. The main feed is small fish, shrimp, broken snails, oyster meat, poultry waste and cooked corn, wheat, soybeans and other fine materials. The daily feeding is about 10% of the body weight of the pond crabs. Each morning and afternoon, it is injected into the food table in the pond. The amount of feed is 30% in the morning and 70% in the afternoon to ensure that the crab eats well.
Fifth, water quality management. In the crab pond, put less flowers and white locusts. If fish floating heads are found, it indicates that the pool water is deprived of oxygen and the water quality is deteriorated. The water should be replaced in time. Every 5-7 days, Quan Li splashes lime once, and uses 13-15 kilograms of lime per acre (with an average depth of 1 meter), and replaces about 1/3 of the pool's water every 6-7 days.
Sixth, against predators, diseases. Pay attention to observation and care, and find that the enemy and the disease should take appropriate measures in time to ensure the smooth and safe listing of crabs.
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