Cultured empty pond breeding shrimp breeding crabs
2019-07-21 06:03:32
After wintering from fish species and pond to next May, shrimps are cultured in ponds. After mid-May, dungling crabs or fish species can be used to increase the surface water use efficiency. There are 28 kilograms of fresh shrimp produced per mu and the specifications are 160-200 pieces. / 9000 dunk crabs.
The pond preparation Tangkou requires convenient irrigation and drainage, no pollution, an area of ​​2 to 5 mu, a slope ratio of 1:3 to 4, and a silt thickness of no more than 10 cm. After the temperature dropped to 8°C in the early winter, the fish species pooled over the pond and immediately drowned and pooled the ponds that had been evacuated, removing the poolside weeds. Then sterilize the pond with croton. Per acre with 5 to 7.5 kilograms of croton, ground into a paste into the jar, add 100 grams of white wine or salt 0.75 kg, sealed 3 to 4 days. The bottom of the pool is about 10 centimeters long. The croton liquid is diluted and the slag is splashed with whole juice. 10 to 15 days after disinfection, apply 300 kg of organic fertilizer per acre, such as manure, compost, and compost, and plant submerged plants with no more than 30% planting area to provide habitat for fresh shrimps; fill water 1.5 meters deep, use 40 inlets and outlets. Mesh filter to prevent the enemy from entering the pool.
One of the shrimp stockings is the direct use of shrimp seedlings. The green shrimp seedlings of 2 to 3 cm in size that were released from August to September of that year are required to have neat specifications, no disease, no injuries, and a transparent and shiny body color. The amount of 10,000 to 15,000 per mu. The second is to raise the eggs and broodstock. Choose 3.5 cm of broodstock and broodstock, stocking 5 to 7.5 kg per acre. Intensify cultivation in winter and spring. Let the water temperature reach 18°C ​​and let it grow naturally.
Feeding and Management During the winter period, 150-200 kg of aquatic plants or 25 kg of willow roots will be planted in the shrimp ponds per mu, providing a good warm winter environment for shrimps. Usually choose a small amount of sunny feeding, feeding once every 7 to 10 days, every time a mu of bean cake, rice bran, barley flour and other feed (made of dough) 1 to 2 kg. In the case of ice and snow, the ice area was immediately cleared of snow and aerated with oxygen.
After the spring water temperature rose to 14°C, normal feeding began. Feed it once a day or every other day. At 5-6 o'clock in the afternoon, sprinkle feed along the shallow water near the pool. Each feeding amount is between 2% and 3% of the total shrimp in the pond. Look at the weather, water quality, shrimps and food conditions and have a flexible grasp. Adjust timely to make shrimps full. Feeds are best made into pellets, animal feed 30%, plant feed 60%, bone meal, crab shell powder 9.5%, dehulling, trace elements and other additives accounted for 0.5%. After the water temperature rises to 20°C, the water is changed every other week. Each time the water is changed by 1/3, the transparency of the pool water is maintained at 40 cm or more. The pool water is too light to make a reasonable application of manure. Adhere to the morning patrol in the morning to prevent floating dead shrimp. From the end of March, bleaching powder (1.5ppm) will be sprayed once every two weeks and 0.5 ounces of oxytetracycline will be added to the feed.
After cultivating fresh shrimps in Tengtang for 5-6 months, the young shrimps that were released in May last year have grown to 4-5 cm in size and can be put on the market. The five larvae of young crabs released from the Tangkou River are 10,000 to 15,000 for crab cultivation. Stocking the broodstock's Tangkou, in mid-May, use a dip net to capture all 3 to 5 cm prawns and market them. Raise 1 to 1.5 cm of juvenile shrimp until mid-June or late June. , 5000 apes are stocked on a mu, and 1,000 are on a flower.
The pond preparation Tangkou requires convenient irrigation and drainage, no pollution, an area of ​​2 to 5 mu, a slope ratio of 1:3 to 4, and a silt thickness of no more than 10 cm. After the temperature dropped to 8°C in the early winter, the fish species pooled over the pond and immediately drowned and pooled the ponds that had been evacuated, removing the poolside weeds. Then sterilize the pond with croton. Per acre with 5 to 7.5 kilograms of croton, ground into a paste into the jar, add 100 grams of white wine or salt 0.75 kg, sealed 3 to 4 days. The bottom of the pool is about 10 centimeters long. The croton liquid is diluted and the slag is splashed with whole juice. 10 to 15 days after disinfection, apply 300 kg of organic fertilizer per acre, such as manure, compost, and compost, and plant submerged plants with no more than 30% planting area to provide habitat for fresh shrimps; fill water 1.5 meters deep, use 40 inlets and outlets. Mesh filter to prevent the enemy from entering the pool.
One of the shrimp stockings is the direct use of shrimp seedlings. The green shrimp seedlings of 2 to 3 cm in size that were released from August to September of that year are required to have neat specifications, no disease, no injuries, and a transparent and shiny body color. The amount of 10,000 to 15,000 per mu. The second is to raise the eggs and broodstock. Choose 3.5 cm of broodstock and broodstock, stocking 5 to 7.5 kg per acre. Intensify cultivation in winter and spring. Let the water temperature reach 18°C ​​and let it grow naturally.
Feeding and Management During the winter period, 150-200 kg of aquatic plants or 25 kg of willow roots will be planted in the shrimp ponds per mu, providing a good warm winter environment for shrimps. Usually choose a small amount of sunny feeding, feeding once every 7 to 10 days, every time a mu of bean cake, rice bran, barley flour and other feed (made of dough) 1 to 2 kg. In the case of ice and snow, the ice area was immediately cleared of snow and aerated with oxygen.
After the spring water temperature rose to 14°C, normal feeding began. Feed it once a day or every other day. At 5-6 o'clock in the afternoon, sprinkle feed along the shallow water near the pool. Each feeding amount is between 2% and 3% of the total shrimp in the pond. Look at the weather, water quality, shrimps and food conditions and have a flexible grasp. Adjust timely to make shrimps full. Feeds are best made into pellets, animal feed 30%, plant feed 60%, bone meal, crab shell powder 9.5%, dehulling, trace elements and other additives accounted for 0.5%. After the water temperature rises to 20°C, the water is changed every other week. Each time the water is changed by 1/3, the transparency of the pool water is maintained at 40 cm or more. The pool water is too light to make a reasonable application of manure. Adhere to the morning patrol in the morning to prevent floating dead shrimp. From the end of March, bleaching powder (1.5ppm) will be sprayed once every two weeks and 0.5 ounces of oxytetracycline will be added to the feed.
After cultivating fresh shrimps in Tengtang for 5-6 months, the young shrimps that were released in May last year have grown to 4-5 cm in size and can be put on the market. The five larvae of young crabs released from the Tangkou River are 10,000 to 15,000 for crab cultivation. Stocking the broodstock's Tangkou, in mid-May, use a dip net to capture all 3 to 5 cm prawns and market them. Raise 1 to 1.5 cm of juvenile shrimp until mid-June or late June. , 5000 apes are stocked on a mu, and 1,000 are on a flower.
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