1. The fish ponds will be transformed into small ponds, shallow ponds, dead water ponds, and leaky water ponds during the winter season. The fish ponds with better conditions will also need to be trimmed, put dried pond water, and be excavated after sun exposure or freezing. Sludge, remove weeds, heighten and reinforce the pond.
2. Disinfection of ponds in fish ponds is better for quicklime disinfection and can also play a role in fertilization. Sterilization should be done on a sunny day. There are two methods: dry pond method and water method. Dry pond method: 75-100kg of lime per acre; with water method: 1m water depth per mu, with quick lime 150-200kg. Generally 7 to 10 days after disinfection, fish can be released.
3. Scientific stocking determines the stocking ratio and density based on factors such as fishpond conditions, planned production and management levels, multi-species polyculture, and reasonable stocking densities. It is necessary to improve the stocking of high-quality fish (such as cichlid crucian carp, carp, etc.) proportion.
4, Reasonable early release of fish species from mid-April to early May. For stocked fish species, fish should be sterilized in front of pond under clear weather on sunny days. Use 3% to 5% of salt water to dip the fish body at a water temperature of 15 to 20°C for 5 to 10 minutes. Kill the bacteria on the fish.
5, fish species quality stocking fish species specifications should be selected more than 13cm, physical fitness, disease-free without injury, such a fish species adaptability, high survival rate.
6. Shallow water and large fertilizers have low temperatures in early spring and require shallow water and large fertilizers to help increase water temperature, promote the growth of fish and the reproduction of plankton. General water injection about 50cm.
7. Feeding and managing fish species should be strengthened in time after stocking. When the water temperature reaches 10°C, feed can be started to restore the fish's physical strength.
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