Mountain Stream Aquaculture Technology

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The use of mountain streams for fish farming is a way to develop water resources in mountainous areas with low investment and great effectiveness. First, according to local conditions, the pool is generally built on a land with a certain gap between the rivers and not flooded, and the river bank is open to divert water. The fish ponds are mostly rectangular, with a length and width ratio of 3:2. Each fish pond is about 10 to 60 square meters, the depth of the pond is 1.5 to 1.8 meters, and the water depth is 0.8 to 1.2 meters. Stone or sheet stone mortar pool embankment, No. 100 cement mortar jointing. The entrances and exits are placed with a 1 cm semi-circular bar at the gap made of steel or wood. The inlet is 10 to 20 cm higher than the outlet. Second, aquaculture varieties suitable for mountain water quality, high dissolved oxygen, fish diseases, and the rich mountain grass, it should be the main raising grass carp, with 10 to 20% of the carp, so the feed cost is low. The stocking amount of fish depends on the flow rate of water. Each square meter of water can be stocked with 10 to 30 fishes of 17 to 25 cm in total length. If the fish pond can be completely replaced by water 2 to 3 times per hour, 30 seeds per square meter can be seeded. Around the end, or less vote. After 10 months of cultivation, the size of grass carp can reach 1.5 kg. Large-sized fish species can be developed to support the development of paddy fish farming, mu-inch fish fillets 800 to 1000, can produce about 20 centimeters of 500 species of fish. Third, the "three set, two look" bait three set two to see the timing, quality, quantitative, look at the weather, see fish. It is mainly fed with fresh green grass, leaves and duckweed and other green feed, and can be fed with 30% pelleted feed. Feed each day in the morning and afternoon, feed more on sunny days, and feed less on rainy days; feed more than 40% of fish’s body weight from July to September, and 10 to 15% of fish’s body weight from April to June. Feeding in March and October is 5~10% of the fish's body weight. In principle, the fish will eat in 3~4 hours. Fourth, strengthen the management of anti-fish disease, mountain streams, fish farming in addition to daily feeding and management, to diligently check, do a good job of flood control, drought prevention, prevention, anti-virus, anti-theft, anti-flooding ponds and prevention of fish disease seven defense work . Once every two weeks to prevent disease once, every three days, the crushed garlic valve was mixed with grass and fish. About 100 grams of garlic per 100 kg of fish was used to prevent enteritis. In addition, a shed can be placed on the pool to prevent waterfowl harm and strong light, but also increase income. (638350 Fisheries Station, Yuechi County, Sichuan Province Fishery Station, Jiang Jiancheng)

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