First, grasp and box time in the late autumn and early winter when the water temperature around 10 °C, select the weather, the wind and warm days and boxes. Second, a rational selection of cages using closed sinking cages, specifications for 4 meters 7 meters 2 meters. The mesh adapts to the specifications of the stocked fish species. The box frame is generally made of wood or plastic frames. After the cage is fixed, the position of the cage is adjusted by using chains, stones, ceramics, etc. to make it float in a water layer under the water, which is semi-deep. Fourth, the wintering density of fingerlings is generally 3 kg to 5 kg per cubic meter cage, 10 cm to 14 cm, or 2 kg to 3 kg for 15 cm to 20 cm. 5. Timely sorting and boxing fish species and boxing 2 days to 3 days before the box, to stop feeding. For the fish species cultivated in the pond, the nets should be trained twice before the box, and the species should be selected before grouping. After the thin and sickly fish species are picked out, they are bathed with 5% salt water for 3 minutes. 4 minutes, and then into the box separately for winter. Sixthly, scientifically set the cage fish into the box 7 days to 10 days before the complete lossless double cage into the water, and then put the fish species, reduce the new cage on the fish body scrape. In the 10 days to 20 days before the ice closure, the net cages of the fish species will be set to 1m to 2m below the ice, and then the active anchor rope will be put on the iron ring of the sinker at 0.5m from the bottom, and then The cage is positioned (never under the water) and four floats are marked in the four corners of the cage.
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