Red-handed crayfish adaptable, individual large, fast-growing, shape like lobster, delicious meat, simple farming techniques, high economic value. Farming the shrimp can generally produce 100 kg to 200 kg per mu, up to 402 kg. The pond cultivation techniques are now described as follows:
First, pond preparation Shrimp pool requires a quiet environment, abundant water, drainage and irrigation convenience. Each pond covers an area of ​​1 mu to 5 mu, with a depth of 1 meter to 1.2 meters. The bottom of the pool is flat, with less silt, sandy, and certain shallow water areas. The pool is gently sloped. More than 1/3 of the pond's water surface is planted with aquatic plants, such as black-leaf algae and water peanuts, providing a favorable environment for feeding, habitat, shade, and shelling. Piles of rubble or used tires are piled around the pond to provide artificial nests for the shrimp. Around the pond, an escape wall of 30 cm to 50 cm in height is built.
Second, seed stocking strict disinfection of clear ponds. For ponds that have been used for many years, excessive silt should be removed, drainage channels must be dredged, and dams should be reinforced. Before putting shrimp, use the same quicklime and other drugs as the fish to disinfect and kill all wild fish and diseases. In the case of dry ponds, 150 kg to 200 kg of lime are applied per acre, and the water slurry and hot water are splashed. Disinfection 7 days after the drug disappeared, can be applied per acre 100 kg to 300 kg of fermented manure, fertilization while the pool water injection 30 cm to 50 cm, five days after the water to 80 cm. When the water is injected, it must be filtered with a dense mesh to avoid mixing with wild fish. Aquatic plants must be temporarily stored and sterilized before they are cultivated to prevent the entry of wild fish eggs and harmful organisms.
Shrimp seedlings (species) are generally stocked in mid-to-late May, and the water temperature is stable above 18°C. Choose when no wind is clear. The temperature difference between wintering pond and shrimp pond should be adjusted within 3°C before stocking. Prior to stocking, shrimps were sterilized with 10-6 bleach. In general, early-blooming seedlings have a length of 3 cm to 5 cm and a length of 1.5 g/tail, and 3000 to 5,000 tails can be planted in Mu. The survival rate can reach 60%, and the size can reach 50 grams to 100 grams in 10 months. / Tail; wintering shrimp species 10g ~ 15g / tail, acre can put 2000 to 3000, the survival rate of 80%, when the developed shrimp specifications up to 100 grams / tail or more; the pool can also be with a certain number of Flowers, white peony flowers. Usually about 150 kg to 200 kg per mu, seedlings should be evenly scattered around the pond.
Third, feeding management science feeding. In the early stage of planting, the protein content of bait should be 30% to 35%, the grain size of bait should be 0.5mm to 0.6mm, and the protein content of bait should be 25% to 30% in the middle and later stages, and the grain size should be 2mm to 3%. Mm. In the shallow water area around the pond, there are multiple feeding areas. Normally it is fed three times a day, from 6:00 to 7:00 in the morning, from 4:00 to 6:00 in the afternoon, and at 9:00 in the evening. Since the shrimp likes to feed at night, the night feeding amount should account for about 70% of the total feeding amount. In ponds with a lot of plants and biomass, the feeding amount should be appropriately reduced, and the feeding amount should also be based on weather, water quality and Shrimp activities, etc., increase or decrease as appropriate. Two to three servings of vegetables, small fish, and shrimp should be fed every week during feeding.
Water quality regulation. Pool water should always be kept cool and high in dissolved oxygen. Every 15 days to 20 days, a new water will be flushed, and the leftover water and grass will be promptly removed from the pond. Splash lime once a month, each time 15 kg/mu ~ 20 kg/mu, can play a role in regulating water quality, killing bacteria and facilitating the shelling of shrimp. In hot season, when the water temperature exceeds 32°C, new water should be flushed and shades should be increased.
Observe the patrol pond. Should adhere to the morning and evening patrol once, to master the changes in water quality, shrimp activities, food intake, etc., and arrange production on the same day based on the observations. In the middle and later stages of breeding, when the water quality becomes fat and the weather suddenly changes, it is necessary to turn on the oxygen in time in order to prevent the floating head dead shrimp. During the rainy season, the firmness of the escape prevention wall should be checked at any time to prevent shrimp escape.
Because of the individual growth and development speed of the shrimp, the individual size of the shrimp is also different. During the aquaculture process, large shrimps can be caught and the shrimp can be adjusted into a balanced market. Generally around mid-October, when the water temperature drops to 12°C to 15°C, shrimps can be harvested when they stop feeding. If you do not catch fish, shrimp can get into the mud and even ice.
First, pond preparation Shrimp pool requires a quiet environment, abundant water, drainage and irrigation convenience. Each pond covers an area of ​​1 mu to 5 mu, with a depth of 1 meter to 1.2 meters. The bottom of the pool is flat, with less silt, sandy, and certain shallow water areas. The pool is gently sloped. More than 1/3 of the pond's water surface is planted with aquatic plants, such as black-leaf algae and water peanuts, providing a favorable environment for feeding, habitat, shade, and shelling. Piles of rubble or used tires are piled around the pond to provide artificial nests for the shrimp. Around the pond, an escape wall of 30 cm to 50 cm in height is built.
Second, seed stocking strict disinfection of clear ponds. For ponds that have been used for many years, excessive silt should be removed, drainage channels must be dredged, and dams should be reinforced. Before putting shrimp, use the same quicklime and other drugs as the fish to disinfect and kill all wild fish and diseases. In the case of dry ponds, 150 kg to 200 kg of lime are applied per acre, and the water slurry and hot water are splashed. Disinfection 7 days after the drug disappeared, can be applied per acre 100 kg to 300 kg of fermented manure, fertilization while the pool water injection 30 cm to 50 cm, five days after the water to 80 cm. When the water is injected, it must be filtered with a dense mesh to avoid mixing with wild fish. Aquatic plants must be temporarily stored and sterilized before they are cultivated to prevent the entry of wild fish eggs and harmful organisms.
Shrimp seedlings (species) are generally stocked in mid-to-late May, and the water temperature is stable above 18°C. Choose when no wind is clear. The temperature difference between wintering pond and shrimp pond should be adjusted within 3°C before stocking. Prior to stocking, shrimps were sterilized with 10-6 bleach. In general, early-blooming seedlings have a length of 3 cm to 5 cm and a length of 1.5 g/tail, and 3000 to 5,000 tails can be planted in Mu. The survival rate can reach 60%, and the size can reach 50 grams to 100 grams in 10 months. / Tail; wintering shrimp species 10g ~ 15g / tail, acre can put 2000 to 3000, the survival rate of 80%, when the developed shrimp specifications up to 100 grams / tail or more; the pool can also be with a certain number of Flowers, white peony flowers. Usually about 150 kg to 200 kg per mu, seedlings should be evenly scattered around the pond.
Third, feeding management science feeding. In the early stage of planting, the protein content of bait should be 30% to 35%, the grain size of bait should be 0.5mm to 0.6mm, and the protein content of bait should be 25% to 30% in the middle and later stages, and the grain size should be 2mm to 3%. Mm. In the shallow water area around the pond, there are multiple feeding areas. Normally it is fed three times a day, from 6:00 to 7:00 in the morning, from 4:00 to 6:00 in the afternoon, and at 9:00 in the evening. Since the shrimp likes to feed at night, the night feeding amount should account for about 70% of the total feeding amount. In ponds with a lot of plants and biomass, the feeding amount should be appropriately reduced, and the feeding amount should also be based on weather, water quality and Shrimp activities, etc., increase or decrease as appropriate. Two to three servings of vegetables, small fish, and shrimp should be fed every week during feeding.
Water quality regulation. Pool water should always be kept cool and high in dissolved oxygen. Every 15 days to 20 days, a new water will be flushed, and the leftover water and grass will be promptly removed from the pond. Splash lime once a month, each time 15 kg/mu ~ 20 kg/mu, can play a role in regulating water quality, killing bacteria and facilitating the shelling of shrimp. In hot season, when the water temperature exceeds 32°C, new water should be flushed and shades should be increased.
Observe the patrol pond. Should adhere to the morning and evening patrol once, to master the changes in water quality, shrimp activities, food intake, etc., and arrange production on the same day based on the observations. In the middle and later stages of breeding, when the water quality becomes fat and the weather suddenly changes, it is necessary to turn on the oxygen in time in order to prevent the floating head dead shrimp. During the rainy season, the firmness of the escape prevention wall should be checked at any time to prevent shrimp escape.
Because of the individual growth and development speed of the shrimp, the individual size of the shrimp is also different. During the aquaculture process, large shrimps can be caught and the shrimp can be adjusted into a balanced market. Generally around mid-October, when the water temperature drops to 12°C to 15°C, shrimps can be harvested when they stop feeding. If you do not catch fish, shrimp can get into the mud and even ice.
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