Autumn fish species management five attention
The suitable water temperature in autumn is the peak season for fish growth. The management of fish species should focus on the following five tasks.
1. Clear pond. The fish species were transferred to ponds sterilized in clear ponds for cultivation. Where water and fish ponds are difficult to turn around, all the fish can be transferred out of stocking, and then the original pond can be disinfected with quick lime of 75 to 100 kg per 667 square meters of water, and the water quality can be improved according to conventional methods until the disappearance of the medicine. Return the fish species.
2. Divided. Because large-scale fish species have large food intake and have strong ability to catch food, if large and small-sized fish species are mixed, the fish will lose their physical quality due to insufficient feeding. Therefore, the fingerlings should be adjusted according to different specifications. Fish species above 6cm can be placed in adult fish ponds, and small fish species need special pool cultivation.
3 thin. It is an important part of raising the survival rate of wintering fishes that large-sized fish species are bred in autumn. Should be based on the size of the water, water depth and other conditions, a reasonable dilute, and promote the growth of fingerlings. For ponds with a depth of 1.5m, 4000-6000 tails of fish with a length of 7-8cm are placed on the surface of 667m2 of water, and the length of fish is generally 13-13cm at the end of the year.
4. Feeding. In the autumn, the temperature of the water changes little day and night, and the species grow rapidly. The food intake is large and feed must be guaranteed. In the case of grass-breeding fish species, with the oyster and squid fish species pools, caster feed should be used, and concentrates should be properly fed. Every day, ten thousand grass carp species are fed with 0.5 to 2.5 kg of duckweed. First cast a green feed, and then concentrate on the fodder to avoid eating grass carp and other fish. Feeding to do the qualitative, quantitative, timing, positioning. For polyculture of cockroaches and squid, fertilize regularly, fertilize once every 10 to 15 days, and apply fertilizers of 70 to 90 kg per 667 m2 of water. Pool water transparency is maintained at 30 to 35cm. In order to use grass carp as the main species for carp and carp species, fertilization should be given priority, and feeding should be supplemented. In addition to the use of basal fertiliser, apply topdressing once every 5 to 10 days, and treat arbitrarily per 667 square meters of water and livestock manure 80 to 100 kg. At the same time, 2 to 4 kg of fine material per 10,000 fish species are to be cast every day; for grass carp, 60 to 90 kg of fodder will be cast per 10,000 grass carp before the consignment.
5. Patrol pool. During the cultivation of fingerlings, it is necessary to insist on daily patrols, observe the fish’s feeding and living conditions, change new water frequently, and add new water once a week. The food field should be regularly cleaned, and the residue should be removed in time. Every half a month, 0.5 kg of bleaching powder should be poured around the food field. Sprinkle the diseased fish and dead fish in a timely manner. Deeply debrief it and promptly confirm the diagnosis and give medication.
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