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1, clear pond. After 2 to 3 months of fish pond cultivation, the ponds have been aging, natural foods have been reduced, and harmful substances such as hydrogen sulfide and pathogens have increased. After the autumn, the fish species should be transferred to ponds that have been sterilized in clear ponds.
2, sub-support. Fish species are bred according to different specifications, so that the specifications of the species to be put in the same pool are the same. Generally more than 16cm of fish can be put into adult fish ponds, small fish species need special pool cultivation.
3, thin release. It is an important part of increasing the survival rate of wintering fish species that large-sized fish species are bred in autumn. Should be based on the size of the water, water depth and other conditions, reasonable dilute, promote the growth of fingerlings. For ponds with a depth of 1.5m, put 4,000 to 6,000 fish from 7 to 8cm per 667m2 of water. At the end of the year, the body length of the fish can reach 13-17cm.
4, feeding. The autumn fish species have a large food intake and grow rapidly and must ensure feed supply. 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. First cast green feed, and then concentrate on feed. For polyculture of cockroaches and squid, fertilize regularly, apply once every 10 to 15 days, and apply 70 to 90kg of fermented manure per 667m2. Pool water is kept transparent 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.
5, patrol pool. During the cultivation of fingerlings, it is necessary to insist on daily patrols to observe the fish’s feeding and living conditions, pay attention to changes in water quality, change new water, and add new water once a week.
The suitable water temperature in autumn is the peak season for fish growth. In the autumn, the management of fish species should focus on five tasks: clear ponds, sub-cultivation, sparse breeding, feeding, and patrol pools.