What is the stocking ratio for land-based drum flow-water fish farming?Stocking of seedlings: In early June, 1,500 seedlings were stocked in each of the No. 1 and No. 2 ponds, 1,800 seedlings were stocked in each of the No. 3 and No. 4 ponds, and 2,000 seedlings were stocked in each of the No. 5 and No. 6 ponds. The stocking species is the newly introduced golden crucian carp, and the seedling specification is 56 fish per kilogram. 250 bighead carp with a weight of 0.4 kg/tail and 20 kg of field snails were stocked in the 3-mu sedimentation pond, and 600 bighead carp with a weight of 0.5 kg/tail and 50 kg of field snails were stocked in the 7-mu purification pond. What is the proper ratio for stocking fish fry in fish ponds?Many ditches, rivers and ponds in rural areas of our city have large catchment areas and abundant natural baits. They are eutrophic ponds. Every year, 100 to 130 fish species of 12 to 13 cm in length can be stocked per mu of water surface. The general proportion is 40% silver carp, 30% bighead carp, and 30% grass carp, bream, black carp, etc. If such ponds are carefully managed and fed appropriately and scientifically, the commercial fish output can reach more than 150 catties per mu or even higher. |
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