Pond fish breeding technology in two seasons

The first quarter of farmed adult fish is listed, and the second quarter is the production of cultivated fish species. Methods as below. ?
First, the "mouthwash" arrangement?
With adequate water supply, abundant feed, convenient transportation, convenient operation, and appropriate area (fish pond area 0.3-0.5 hectares, water depth of 2 meters or more), it will be rectified at the beginning of December each year in Qingtang, and will be stocked with old-age fish species in the middle and late December. Or large size fish species. In the following year, they can be listed and arrested in May, and they will be arrested by the end of June. At this time, it is necessary to disinfect the fish ponds in time, and then raise the summer flowers to cultivate the fish species. Fish species are sold before December. ?
Second, adult fish stocking?
Two fishes are raised each year. Since the adult has a short feeding period, it is necessary to have a reasonable mix of fish and fish for high yields. For large-mouthed, fast-growing, quick-to-market, and short-lived old-mouthed fish species or large-species fingerlings that are polycultured, cockroach and eel should be 55%, and specifications should be 8 to 10 tails per kilogram; grass, alfalfa, Eel and squid account for 4%. The average size is 6 to 8 per kilogram. By the beginning of June, 80% had reached the market specification. ?
Third, adult fish management?
The adult fish feed must support feeding according to "four settings" (namely, qualitative, quantitative, positioning, timing). After the winter, apply a wax fertilizer to ensure that the fish will have water for the winter. The fertilizing material should look at the weather changes, to see the extent of water quality difference, to see the food and activities, often add new water, to maintain the transparency of the pool water 25 to 30 cm. ?
Fourth, fish breeding?
After the fish out of the pond, clear ponds are disinfected. In early July, the species of summer flowers will be stocked, and the species of summer flowers will be stocked per acre. The species of summer fish, 5 to 8 centimeters in size, will be stocked with 1.2 to 15,000 tails per acre. During the cultivation period, in addition to the normal recovery of fertilization materials and feeding of concentrates, the duckweed (avernodium, red cedar) 50-70 kg and large-leaved vegetables, young tender grass, etc. were also fed every mu. Every 7 to 10 days, every 7 to 13 centimeters of new water is added, and the transparency is maintained at 20 centimeters. ?
Fifth, disease prevention?
Fish species must be sterilized before stocking, and the fish species should be soaked in the liquid (10 g bleaching powder or 8 g copper sulfate per cubic meter of water) for 20-30 minutes. In the first half of the fish disease epidemic season, dipterex and ferrous sulphate mixtures, or bleaching powder, or quicklime are sprayed evenly by the effective amount in the whole pool. We must also do a good job in feed disinfection (150 grams per 50 kilograms of grass plus bleach), fertilizer disinfection (100 kilograms of manure plus 100 grams of bleach), food field disinfection, etc. (once a day).

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