First, clear pond disinfection The China Fishery News reported that it chose to disinfect the fresh lime ponds with a dosage of 75-100 kg/667 ,. The method was to splash the whole pond with water and to kill pathogens and wild fish. Quicklime disinfection can not only play a role in the regulation of ph value, improve the quality of bottoms, and create a good environment for the growth of fish, but also increase the calcium content in the aquaculture water to meet the calcium demand of fish growth. Second, breeding mode Adhere to highlight the principle of main breeding and scientific breeding. The general main fish culture accounts for 70%-80%, and fish rearing accounts for 20%-30%. When the main fish culture is determined, the fish is mixed with the mixed fish species according to the actual situation. Make full use of plankton and other natural baits in aquaculture waters to increase aquaculture production per unit area and increase aquaculture efficiency. Therefore, the matching fish species should be determined by the main species of fish, usually filter-feeding carp is used as a mixed-cultivation object, while oysters, oysters, and grass carp are the second-selected species, and the rest of the matched fish species should be treated as the main-cultivation. Fish may vary in size, fish with similar or identical food habits should be as few as possible with polyculture or not with polyculture. It is necessary to increase the stocking ratio of large-scale fish species as far as possible so as to reach the commodity specifications as soon as possible, mention the sales in the morning, reduce the density of fish ponds, and increase the breeding efficiency. Third, fish species stocking Select early spring, clear air, high temperature (water temperature above 8 °C) when the fish stocking, should not be in the wind and snow windy weather when the species. The stocking spot should be chosen so that the pond is sheltered from the sun, and put the buckets (pots) of the fish into the water. Let the fish swim slowly into the pool. If the difference in water temperature exceeds 3°C, the temperature of the fish should be adjusted and then put into the pool water so that it can gradually spread to the temperature of the culture pond. Fourth, fingerling disinfection Disinfecting fingerlings is an effective way to cut off the spread of pathogens and prevent the occurrence of fish diseases. Before stocking, the fish should be washed with 3%-5% saline for about 10 minutes to kill the pathogenic bacteria and parasites, reduce the occurrence of fish diseases and improve the survival rate of the fish species. Fifth, the bait feed After 3-4 days into the pool, the fish species have basically adapted to the new living environment and can start feeding at this time. Feeding easily digestible young grass and nutritious grain feed, feed should adhere to the "four principles" principle. Namely: Fixed-point feeding: Install a bait-feeder at a sheltered sunny place and set up a food farm. Feed regularly: 9:00-10:00 AM and 3:00-4:00 PM, respectively; Feeding: The fed bait should be fresh and nutritious and should not be fed to expired bait; Quantitative feeding: The general feeding amount is about 1% of the total weight of the pond fish, and it gradually increases to 1.5%-2.0% after it begins to catch food. , then transferred to normal farming.
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