The first is the transformation of fish ponds. In the winter season, the ponds in Xiaotang, shallow ponds, dead pools, and leaking ponds are adapted. The fish ponds with better conditions are also required to be trimmed, put dried pond water, and after the sun is exposed or frozen, the thick silt will be excavated to eradicate the mud. Grass, heightened reinforcement ponds.
The second is disinfection of fish ponds. Fish ponds are better for disinfection of lime, and they can also directly apply fertilizer. Disinfection should be done on a sunny day. There are two methods: dry pond method and water method. Dry excavation method: 60-75 kilograms of lime per acre, and 6-10 cm of water must be left in the pond so that the lime slurry can be evenly distributed; the water method is used; the water depth is 1 meter per acre, and lime 120-150 is used. Kilograms, spread the whole lime slurry evenly. Generally 7 to 10 days after disinfection, fish can be released.
The third is reasonable stocking. According to factors such as fishpond conditions, planned production, and management level, the ratio and density of stocking should be determined. Multi-species polyculture should be conducted and the fish should be kept in reasonable density. It is necessary to increase the stocking rate of high-quality fish such as heterotrophic silver carp, carp, etc. Raise freshwater, white bream, California salmon, and other varieties to meet the needs of the currency market and increase economic efficiency.
The fourth is early release of fish species. From the winter solstice to the beginning of spring is the best season for stocking, because the water temperature is low during this time, and the scales of the fish are tight, which facilitates fishing operations and transportation, so that the survival rate of the species can be improved. For stocked fish species, fish should be sterilized in front of fish ponds on sunny days. The fish species to be stocked should be kept at a concentration of 1 to 2% of salt water and dip at the water temperature of I0-15°C. 15 minutes to kill the bacteria on the fish.
The fifth is the quality of stocked fingerlings. In general, the size of stocked fish is more than 13 cm, and the body is rich in manure, and the scales and fins are complete. The swimming is lively and disease-free. This breed has strong adaptability and high survival rate.
Sixth, feeding and management. After the fish species are stocked, they must be managed in time. With the warming of the weather, by March next year, when the water temperature reaches 10°C, feeding can begin.
The second is disinfection of fish ponds. Fish ponds are better for disinfection of lime, and they can also directly apply fertilizer. Disinfection should be done on a sunny day. There are two methods: dry pond method and water method. Dry excavation method: 60-75 kilograms of lime per acre, and 6-10 cm of water must be left in the pond so that the lime slurry can be evenly distributed; the water method is used; the water depth is 1 meter per acre, and lime 120-150 is used. Kilograms, spread the whole lime slurry evenly. Generally 7 to 10 days after disinfection, fish can be released.
The third is reasonable stocking. According to factors such as fishpond conditions, planned production, and management level, the ratio and density of stocking should be determined. Multi-species polyculture should be conducted and the fish should be kept in reasonable density. It is necessary to increase the stocking rate of high-quality fish such as heterotrophic silver carp, carp, etc. Raise freshwater, white bream, California salmon, and other varieties to meet the needs of the currency market and increase economic efficiency.
The fourth is early release of fish species. From the winter solstice to the beginning of spring is the best season for stocking, because the water temperature is low during this time, and the scales of the fish are tight, which facilitates fishing operations and transportation, so that the survival rate of the species can be improved. For stocked fish species, fish should be sterilized in front of fish ponds on sunny days. The fish species to be stocked should be kept at a concentration of 1 to 2% of salt water and dip at the water temperature of I0-15°C. 15 minutes to kill the bacteria on the fish.
The fifth is the quality of stocked fingerlings. In general, the size of stocked fish is more than 13 cm, and the body is rich in manure, and the scales and fins are complete. The swimming is lively and disease-free. This breed has strong adaptability and high survival rate.
Sixth, feeding and management. After the fish species are stocked, they must be managed in time. With the warming of the weather, by March next year, when the water temperature reaches 10°C, feeding can begin.
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