To reform the ponds and ponds in accordance with the principle of “small ponds change large pools, shallow pools change deep pools, dead pools change living pools, and leaking pools change the pools,†the annual dredging will be done, and the bottom mud shall be kept 10 to 15 cm. Exposure for a few days.
Qingtang disinfection selected fine weather for clear pond disinfection. Use 75 to 100 kg of lime or 3 to 4 kg of bleaching powder per acre of fishpond to dissolve. Spread evenly over the whole pool. Let the pond be exposed to sunlight for a few days after splashing, and use the whole pond to shake it to achieve full disinfection and disease prevention. .
Fertilizer water quality clear pond 5 to 7 days after the application of basal fertilizer. Generally, 500-700 kg of fermented pigs or cow dung per acre pond, 200 kg of human excrement, and more can be used in Xintang and Qiantang ponds. The fertilizer ponds can be applied less or not, and then the winter water is used to promote the growth of phytoplankton. Provide natural food for fingerlings.
The early spring and winter solstice to early spring is the best season for restocking. The so-called “water-based stocking and fish stocks are soaring.†At this time, the water quality is stable, the fish is strong, the scales are tight, the activity is small, the operation is not easy to hurt, and it is beneficial to disease prevention and promotion. Eat as early as possible and gain weight quickly.
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