Fish Pond Winter Tube

Commercial fish pond winter is the season for commercial fish market. Farmers need to catch fish in batches in batches according to the fish’s physique, climate characteristics, and market demand. At the same time, they must combine winter fishing options to keep various types of broodstock for artificial breeding. . Empty fish-free ponds should be dredged, trimmed, reconstructed and disinfected in a timely manner. The pool water can be drained first, the thick mud at the bottom of the pond can be dug out, and the sunlight can be fully exposed to the sun to kill the pathogens and wild fishes in the silt and promote the improvement of the pond bottom. At the same time, the ponds must be eradicated. Grass, smooth the bottom of the pond, raise the height of the pond and reinforce it, and maintain the auxiliary facilities such as aqueducts, waterways, and bait-feeding racks. After cleaning the bottom of the pond, if you are ready for idle treatment, you can choose to disinfect the pond. The disinfection should be carried out on a sunny day. The bottom of the pond should be left with about 10 cm of water, and the calcined water should be splashed with the whole pond. Use quick lime 50 per acre. 80 kg; if ready for use in the spring, put the water to dry, grow grass or winter vegetables at the bottom of the pool, and harvest water or grass after harvesting grass in the spring. Wintering fish ponds and fish ponds, the daily management can not be ignored. Under normal circumstances, the choice of water temperature dropped to about 8 ~ 10 °C, fish species to stop eating 3 to 5 days after the pond, overwintering pond area is generally 2 to 5 acres, the best depth of 2 meters. To select the appropriate age of the broodstock for wintering culture, in the common four major fish, herring requires 5 to 7 years of age, grass carp, squid 4 to 6 years of age, carp 3 to 5 years of age. Before the fish ponds are frozen, they should not be fasted. In order to avoid deterioration of water quality, inorganic ammonia such as ammonium bicarbonate and superphosphate should be administered as much as possible to reduce the amount of organic feed. Even if the pellet feed is fed, the powder in the pellet feed should be sieved. Material to prevent the fish from jumping off the water after eating to cause eating and eating caused by frostbite. In the winter, it is also necessary to pay attention to timely discharge of old water, supplement of new water, promote circulation of water in the pool, and increase oxygen content. Can also take artificial water, stir the pool water, sprinkle lime water, pouring water and other measures to increase the dissolved oxygen content in water. The dissolved oxygen content in water is usually detected every 10 days. It is found that dissolved oxygen is insufficient and remedial measures are taken as soon as possible. In case of severe weather changes, new water should be properly infused to prevent shallow water from freezing and freezing fish.

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