Grass carp efficient feeding technology

1. Select the appropriate species of Fish pond pond area of ​​about 5 acres of the best, more than 2 meters deep water leakage, with injection and drainage facilities. The per mu output is more than 500 kg, and about 0.5 kilowatts of oxygen-increasing equipment must be provided for each mu of pond. 2. Select high-quality summer fish species The quality of summer fish species White plover is active in the underwater layer, hi clusters, lively action, sensitive when frightened, and able to scramble to snatch feed. The fish is plump, bright in color, complete in scales, and strong in water. After the water is removed, the lids do not open immediately. The selected summer fish species were sterilized with 3% saline solution. 3. Cultivating palatable natural fish and summer grass and grass should be in the climax of the pond, and it is better to cultivate duckweed in the pond. The first-year-old grass carp ponds should be applied after pond clearing, applying 400-500 kilograms of organic fertilizer per acre, and then putting 16-25 kilograms of duckweed or duckweed per acre, applying organic fertilizer 25-50 every 5 days after 5 months. Kg, or with 1 kg of ammonium bicarbonate plus 0.5 kg of superphosphate diluted in Quanchiposa. Sprinkle 3 times a day early, middle and late to accelerate the breeding of duckweed. Before the stockades are stocked for 7 to 10 days, they first inject 30 cm deep new water, apply 500 kg of organic fertilizer per acre, and add 50 cm of water every 2 days. In this way, the fish ponds in the pool can be made into groups. 4. Appropriate amount of timely stocking depends on the local conditions and the level of farming. The number of stocking is also different. The yield of 500-kilogram or more grass carp per mu is generally 4,000 to 5,000, the carp is 2000 to 3000, the carp 500 to 600, the herring 100, the carp 2000 to 3000, and the carp 500. When stocking, the main fish should be stocked early. 5. Strengthening the feeding of the summer fish and fish ponds does not have to control the amount of food. It should be done after the food has been eaten. It requires that the grass carp be more than 10 cm above the fish rearing pond, and the specifications are uniform. When the summer grass carp is under the pond, it mainly feeds on the genus Cladocera and duckweed, and 2 to 3 days before the duckweed is eaten, so that the fish can switch to the shredded and tender grass or the purple duckweed and the black algae. From July to August, the amount of feed was properly controlled and no feeding was performed at night; in late September, fish should be thrown in order to allow the fish to eat day and night. The total amount of concentrated feed per acre is 800-1000 kg, and the amount of green feed is 1000-2000 kg.

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