1. Select suitable fish ponds: The area of ​​fish ponds should be 3500--4000 square meters, water depth is 2m or more, no water leakage, adequate water sources, and easy injection and drainage. For an output of 500kg/667 square meters or more, 0.5kw of oxygen-increasing equipment should be provided for every 667 square meters of pond.
2. Selection of high-quality fish species: High-quality summer fish species are full of fish, bright body color, scales intact, top water strength, leaving the water after the lid does not immediately open and so on. Before stocking, the selected species of summer fish should be sterilized with 3%--5% saline solution.
3. Breeding palatable food: cultivate summer grass and grass fish, fish ponds should be in front of the fish ponds, to cultivate a good duckweed or duckweed. The first-year grass carp ponds should also be applied after the clear ponds, applying 4,000 to 5,000 kilograms of organic manure every 667 square meters, using bamboo to divide the water surface into a cross-shaped frame, and then throwing 667 square meters per 667 square meters of castorum or duckweed 16- -25kg, put Ping into the box. Apply organic fertilizer 25--50kg every 2 days, or use 1kg of ammonium bicarbonate plus 0.5kg of superphosphate to dilute in water and then spill it over the whole pond. Sprinkle each time in the morning, in the middle, and in the evening to accelerate the breeding of duckweed. .
4. Timely and appropriate stocking: According to the local conditions and the level of farming, the number of stocking is also different. It is planned to produce 500kg/667 square meters or more, 4,000 to 5,000 grass carp per 667 square meters of water, 2000 to 3000 fish carp, 500 to 600 carp carp, 100 herring and 2000 to 3000 fish carp. 500 squid. When stocking, the main fish should be stocked early, which not only can ease the conflict between the scion and space for scald and fish, but also can further improve the specifications of the main fish, thus enhancing its bait ability.
5. Strengthen the bait feeding: when the fish pond is under the grass, it is not necessary to control the amount of food. It should be done after the food is eaten. It requires that the grass carp in the pond with fish rearing is more than 10cm, and the specifications are uniform. When the summer grass carp is under the pond, it mainly feeds on the genus Cladocera and duckweed, and the duckweed 2-3 days before the food is eaten, allowing the fish to switch to the shredded tender grass or the purple duckweed and the black leaf algae. From July to August, the amount of bait should be appropriately controlled and not fed at night. In late September, feeding should be intensified to allow the fish to eat day and night.
6. Strengthen water quality management: In the 20 days after the Xiahuaxiatang, the water quality should be improved. Each day, 75kg of straw is sprayed, and the new water is refilled every 2 days, each time 10cm deep; the water quality can be light after 20 days, in addition to regular supplements. Outside the water, some old water should also be drained. The transparency of the water quality can be maintained at about 35cm to promote the appetite of grass carp. In the middle and late September, the number of water additions is gradually reduced, and chemical fertilizers are chased at the same time. Once every 7-10 days, urea 1.5-2.5kg per 667m2 fish ponds can be applied. Phosphate fertilizer 2.5--5kg. .
7. Do a good job of fish disease prevention and control: Dispose of 20g/m3 quicklime at the end of July and at the end of August. Use 0.5g/m3 of crystal trichlorfon and 0.2g/m3 in mid-August and mid-September. The ferrous sulfate Quanchiposa. Between mid-August and mid-September, furazolidone was used to feed two courses of treatment. The food table should also be regularly cleaned or disinfected with bleach.
Wang Zhiqian (Room 305, Building 8, Dongyuan Community, Xiangshui County, Jiangsu Province, China Postcode: 224600)
2. Selection of high-quality fish species: High-quality summer fish species are full of fish, bright body color, scales intact, top water strength, leaving the water after the lid does not immediately open and so on. Before stocking, the selected species of summer fish should be sterilized with 3%--5% saline solution.
3. Breeding palatable food: cultivate summer grass and grass fish, fish ponds should be in front of the fish ponds, to cultivate a good duckweed or duckweed. The first-year grass carp ponds should also be applied after the clear ponds, applying 4,000 to 5,000 kilograms of organic manure every 667 square meters, using bamboo to divide the water surface into a cross-shaped frame, and then throwing 667 square meters per 667 square meters of castorum or duckweed 16- -25kg, put Ping into the box. Apply organic fertilizer 25--50kg every 2 days, or use 1kg of ammonium bicarbonate plus 0.5kg of superphosphate to dilute in water and then spill it over the whole pond. Sprinkle each time in the morning, in the middle, and in the evening to accelerate the breeding of duckweed. .
4. Timely and appropriate stocking: According to the local conditions and the level of farming, the number of stocking is also different. It is planned to produce 500kg/667 square meters or more, 4,000 to 5,000 grass carp per 667 square meters of water, 2000 to 3000 fish carp, 500 to 600 carp carp, 100 herring and 2000 to 3000 fish carp. 500 squid. When stocking, the main fish should be stocked early, which not only can ease the conflict between the scion and space for scald and fish, but also can further improve the specifications of the main fish, thus enhancing its bait ability.
5. Strengthen the bait feeding: when the fish pond is under the grass, it is not necessary to control the amount of food. It should be done after the food is eaten. It requires that the grass carp in the pond with fish rearing is more than 10cm, and the specifications are uniform. When the summer grass carp is under the pond, it mainly feeds on the genus Cladocera and duckweed, and the duckweed 2-3 days before the food is eaten, allowing the fish to switch to the shredded tender grass or the purple duckweed and the black leaf algae. From July to August, the amount of bait should be appropriately controlled and not fed at night. In late September, feeding should be intensified to allow the fish to eat day and night.
6. Strengthen water quality management: In the 20 days after the Xiahuaxiatang, the water quality should be improved. Each day, 75kg of straw is sprayed, and the new water is refilled every 2 days, each time 10cm deep; the water quality can be light after 20 days, in addition to regular supplements. Outside the water, some old water should also be drained. The transparency of the water quality can be maintained at about 35cm to promote the appetite of grass carp. In the middle and late September, the number of water additions is gradually reduced, and chemical fertilizers are chased at the same time. Once every 7-10 days, urea 1.5-2.5kg per 667m2 fish ponds can be applied. Phosphate fertilizer 2.5--5kg. .
7. Do a good job of fish disease prevention and control: Dispose of 20g/m3 quicklime at the end of July and at the end of August. Use 0.5g/m3 of crystal trichlorfon and 0.2g/m3 in mid-August and mid-September. The ferrous sulfate Quanchiposa. Between mid-August and mid-September, furazolidone was used to feed two courses of treatment. The food table should also be regularly cleaned or disinfected with bleach.
Wang Zhiqian (Room 305, Building 8, Dongyuan Community, Xiangshui County, Jiangsu Province, China Postcode: 224600)
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