In summer and autumn, the water temperature is high, and the carp eats well and grows quickly, but at the same time it is also the season of diseases and frequent occurrences. The management of carp aquaculture in the summer and autumn must grasp the following points.
First, the full amount of bait should not be put on the premise of not exceeding the carrying capacity of the pond. The stocking amount of bait fish is 4 to 5 times the amount of bonito, and the bait fish is supplemented every 3 to 5 days. At the same time, pay attention to the observation of the feeding situation of squid. If the surface of the fish pond is only small and small, the sound of water released by the squid when catching the bait fish is small and the interval time is long, indicating that the bait fish are abundant; if the squid catches the bait, On the water layer, the water splash is large and the sound is loud and frequent, which means that the bait fish are insufficient. If you see the squid flocks of hunting fish in the pool, it means that the bait has been basically eaten, and you should add it in time. The bait fish can choose squid, grass carp, squid, squid and so on. The bait fish size is generally 1/3 to 1/2 of the body length of the squid. If the specifications are not uniform, use a fish sifter to remove the larger sized bait fish.
Second, water quality management Breeding catfish requires fresh water, high dissolved oxygen, transparency in 30 cm or more, water quality long-term maintenance of fertilizer, live, tender, cool. Usually every 2 days to 3 days for a change of water, each changing the water 15 cm to 30 cm, and keep the state of micro-water flow of water. It was found that the squid had spit out the bait fish phenomenon, indicating that the water body had been deprived of oxygen and the water should be injected in time to increase oxygen and prevent the floating head from dying. During the high-temperature season, 25 kilograms of quicklime shall be poured on the pond once every two weeks to improve water quality and prevent diseases. If the water is muddy, 1 kg of alum can be used per acre. From July to September, the aerator was activated according to the feeding, activities and weather conditions of the carp. The machine was turned on 2 times a day, 2 hours during the day and 4 hours at night. Found a serious floating head of carp, immediately splashed hydrogen peroxide, calcium peroxide and so on.
Third, the disease prevention and treatment of carp disease, to prevent the main focus on the bait fish and water disinfection. Before the bait fish is released, it is disinfected with 3% saline solution to prevent worms and bacteria from entering the pond. The July-September period is the peak season for carp. The main diseases are trichodiasis, ringworm disease, and gill disease, which can be alternately sprayed. Copper sulfate, ferrous sulfate and other drug treatment, treatment should be the first insecticide, post-bactericidal, oral use of external combination, and pay attention to the prohibition of trichlorfon and other organophosphorus pesticides.
Fourth, catching large stay at the end of August, some squid has reached the market specifications, it should be timely to catch the market, reduce the density of pond fish, and promote the growth of small-size squid, and improve aquaculture production.
First, the full amount of bait should not be put on the premise of not exceeding the carrying capacity of the pond. The stocking amount of bait fish is 4 to 5 times the amount of bonito, and the bait fish is supplemented every 3 to 5 days. At the same time, pay attention to the observation of the feeding situation of squid. If the surface of the fish pond is only small and small, the sound of water released by the squid when catching the bait fish is small and the interval time is long, indicating that the bait fish are abundant; if the squid catches the bait, On the water layer, the water splash is large and the sound is loud and frequent, which means that the bait fish are insufficient. If you see the squid flocks of hunting fish in the pool, it means that the bait has been basically eaten, and you should add it in time. The bait fish can choose squid, grass carp, squid, squid and so on. The bait fish size is generally 1/3 to 1/2 of the body length of the squid. If the specifications are not uniform, use a fish sifter to remove the larger sized bait fish.
Second, water quality management Breeding catfish requires fresh water, high dissolved oxygen, transparency in 30 cm or more, water quality long-term maintenance of fertilizer, live, tender, cool. Usually every 2 days to 3 days for a change of water, each changing the water 15 cm to 30 cm, and keep the state of micro-water flow of water. It was found that the squid had spit out the bait fish phenomenon, indicating that the water body had been deprived of oxygen and the water should be injected in time to increase oxygen and prevent the floating head from dying. During the high-temperature season, 25 kilograms of quicklime shall be poured on the pond once every two weeks to improve water quality and prevent diseases. If the water is muddy, 1 kg of alum can be used per acre. From July to September, the aerator was activated according to the feeding, activities and weather conditions of the carp. The machine was turned on 2 times a day, 2 hours during the day and 4 hours at night. Found a serious floating head of carp, immediately splashed hydrogen peroxide, calcium peroxide and so on.
Third, the disease prevention and treatment of carp disease, to prevent the main focus on the bait fish and water disinfection. Before the bait fish is released, it is disinfected with 3% saline solution to prevent worms and bacteria from entering the pond. The July-September period is the peak season for carp. The main diseases are trichodiasis, ringworm disease, and gill disease, which can be alternately sprayed. Copper sulfate, ferrous sulfate and other drug treatment, treatment should be the first insecticide, post-bactericidal, oral use of external combination, and pay attention to the prohibition of trichlorfon and other organophosphorus pesticides.
Fourth, catching large stay at the end of August, some squid has reached the market specifications, it should be timely to catch the market, reduce the density of pond fish, and promote the growth of small-size squid, and improve aquaculture production.
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