Choose the open terrain, flat terrain, good lighting conditions, can prevent flooding, good water retention, adequate water supply, fresh water, independent irrigation and drainage facilities, an area of ​​1000-3000m2, depth of 1.5-2.0m, pond bottom mud 20cm thick pond, for Fish breeding ponds.
2 Qingchi Disinfection removes weeds from the pond, reinforces ponds, and fry 7-10 days before stocking. Each area of ​​667m2 uses quicklime 75-100kg. Water at the bottom of the pond is 10cm.
3 Culture water quality Every 667m2 of ponds are fermented by humans and 500kg of livestock manure is used as base fertilizer. Quicklime disinfection 4-7d, water depth 50-80 cm, culture water quality. The inlet is double-layered with a 40-mesh screen to prevent wild fish and eggs from entering the pond with running water.
4 When the fry is cultured on sunny days and cultivated water for 3 to 4 days, it can be planted. Choose friable, neat, and disease-free fry, and lay 10,000 to 12,000 tails of grass carp on every 667 square meters of water, with 30,000 to 50,000 tails of white locust or summer pods.
5 Daily management
5.1 Feeding methods Grasses and fishes are cultivated to be fed mainly with phytoplankton and tender grasses. It is therefore advisable to use paddy fields, small pools beside the village, and ditch to breed and propagate green fodder. In the first 20 days of summer flowering, Yu Ping was fed 20-30 kg of grass carp every day and was fed twice a day. When the body was about 6 cm in length, duckweed was fed, and every day, 10,000 grass carp was 80-100 kg. Up to 8-10cm in length, it was changed to purple duckweed and tender grass. When there is a shortage of green feed, the amount of supplemented wheat bran, vegetable cake powder, bean cake powder, etc. is properly added. Grasp first-served green fodder and later feed concise fodder. Feeding should follow the "four principles" principle.
5.2 Water Quality Regulation Water quality in mountainous areas is generally acidic, requiring that 30 g/m3 of quicklime solution be sprayed once every 7-10 days, and the pH of the pool water should be adjusted to 7-8 as much as possible; top dressing should be flexibly controlled according to water color, weather, etc. Generally, organic fertilizers are applied in spring and autumn, inorganic fertilizers are applied in high temperatures in summer, sunny fertilization, cloudy rain, and hot weather are not applied. Adjust the water color to light green or dark brown and control the transparency to about 30cm.
5.3 Prevention and control of fish diseases Fish fry are to be sprinkled with 0.2-0.5 g/m3 of Quantitative Trichlorfon crystals on the 3rd to 4th day after stocking, and the whole pool is sprinkled with 1 g/m3 of bleach every other day. Usually use the table bleaching powder bag disinfection, each food table hanging 3-6, each bag of bleach 100g, dressing 1 times a day, fish disease prone season, linked to 3d weekly. Fish disease season, according to every 50kg of fish with garlic head 200g, salt 100g, mix mash or grind into juice, add water and mix thoroughly and stir into the crushed bread in the feed, or the garlic juice into a flour paste, mix ping, mix grass After drying for half an hour, feed for 3–4 days. At the same time, it is imperative to adhere to the patrol ponds every day to prevent deterioration of the water quality, collect the residual baits and dead fish, and do a good job in the environmental sanitation of the fish ponds. In the fish disease season, the amount of feeding should be appropriately controlled.
5.4 Winter management Commercial fish farming in northern Fujian is mostly concentrated around the Spring Festival. Therefore, the next year's fish release time is generally from January to March, so the fish ponds should be strengthened in winter management. In addition to intensive cultivation before winter, one should deepen the water level to 1.5m or more after entering the winter; the second is to apply the same water quality as the whole feed period to maintain a certain amount of water in the pool water; the third is clear weather, and the water temperature is higher, in the afternoon two Feed some amount of concentrate feed.
2 Qingchi Disinfection removes weeds from the pond, reinforces ponds, and fry 7-10 days before stocking. Each area of ​​667m2 uses quicklime 75-100kg. Water at the bottom of the pond is 10cm.
3 Culture water quality Every 667m2 of ponds are fermented by humans and 500kg of livestock manure is used as base fertilizer. Quicklime disinfection 4-7d, water depth 50-80 cm, culture water quality. The inlet is double-layered with a 40-mesh screen to prevent wild fish and eggs from entering the pond with running water.
4 When the fry is cultured on sunny days and cultivated water for 3 to 4 days, it can be planted. Choose friable, neat, and disease-free fry, and lay 10,000 to 12,000 tails of grass carp on every 667 square meters of water, with 30,000 to 50,000 tails of white locust or summer pods.
5 Daily management
5.1 Feeding methods Grasses and fishes are cultivated to be fed mainly with phytoplankton and tender grasses. It is therefore advisable to use paddy fields, small pools beside the village, and ditch to breed and propagate green fodder. In the first 20 days of summer flowering, Yu Ping was fed 20-30 kg of grass carp every day and was fed twice a day. When the body was about 6 cm in length, duckweed was fed, and every day, 10,000 grass carp was 80-100 kg. Up to 8-10cm in length, it was changed to purple duckweed and tender grass. When there is a shortage of green feed, the amount of supplemented wheat bran, vegetable cake powder, bean cake powder, etc. is properly added. Grasp first-served green fodder and later feed concise fodder. Feeding should follow the "four principles" principle.
5.2 Water Quality Regulation Water quality in mountainous areas is generally acidic, requiring that 30 g/m3 of quicklime solution be sprayed once every 7-10 days, and the pH of the pool water should be adjusted to 7-8 as much as possible; top dressing should be flexibly controlled according to water color, weather, etc. Generally, organic fertilizers are applied in spring and autumn, inorganic fertilizers are applied in high temperatures in summer, sunny fertilization, cloudy rain, and hot weather are not applied. Adjust the water color to light green or dark brown and control the transparency to about 30cm.
5.3 Prevention and control of fish diseases Fish fry are to be sprinkled with 0.2-0.5 g/m3 of Quantitative Trichlorfon crystals on the 3rd to 4th day after stocking, and the whole pool is sprinkled with 1 g/m3 of bleach every other day. Usually use the table bleaching powder bag disinfection, each food table hanging 3-6, each bag of bleach 100g, dressing 1 times a day, fish disease prone season, linked to 3d weekly. Fish disease season, according to every 50kg of fish with garlic head 200g, salt 100g, mix mash or grind into juice, add water and mix thoroughly and stir into the crushed bread in the feed, or the garlic juice into a flour paste, mix ping, mix grass After drying for half an hour, feed for 3–4 days. At the same time, it is imperative to adhere to the patrol ponds every day to prevent deterioration of the water quality, collect the residual baits and dead fish, and do a good job in the environmental sanitation of the fish ponds. In the fish disease season, the amount of feeding should be appropriately controlled.
5.4 Winter management Commercial fish farming in northern Fujian is mostly concentrated around the Spring Festival. Therefore, the next year's fish release time is generally from January to March, so the fish ponds should be strengthened in winter management. In addition to intensive cultivation before winter, one should deepen the water level to 1.5m or more after entering the winter; the second is to apply the same water quality as the whole feed period to maintain a certain amount of water in the pool water; the third is clear weather, and the water temperature is higher, in the afternoon two Feed some amount of concentrate feed.
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