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春暖花开,气温开始回升,亲鱼摄食也随水温上升而渐渐旺盛。此时正值亲鱼性腺迅速发育时期。鲢鱼池开春后,可根据水质和亲鱼情况,灵活掌握施肥。每隔2—3天,每亩施发酵腐熟的粪肥25公斤左右。鳙鱼塘施肥比鲢鱼塘多一些。草鱼塘3月开始喂麦芽和豆饼,每天每尾50—100克,还可喂些包菜叶、莴苣叶等,投喂的量比秋季还要多些。青鱼池以螺蚬和蚌肉为主,辅以少量豆饼。鲤、鲫鱼塘按2—3%体重投喂精料,有
Spring, the temperature began to pick up, broodstock feeding also gradually with the rising temperature. At this point positive brood gonads rapid development period. Silver carp pond after the spring, according to the quality of water and broodstock, flexible control of fertilization. Every 2-3 days, applied fermented manure about 25 kg per mu. Turtle pond fertilization more than silver carp pond. Grass carp pond in March began to feed malt and bean cake, 50-100 grams per tail per day, but also feed some cabbage leaves, lettuce leaves, fed more than in the fall even more. Herring pond snail and clam meat-based, supplemented by a small amount of bean cake. Carp, crucian carp by 2-3% body weight fed concentrate, there