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冬去春来,气温回升,处于半休眠状态的鱼类开始游动、觅食。为夺取塘鱼高产,成鱼春季养殖要抓好七项工作。1.施肥池塘水温达5℃以上时,就应施肥,以培养水中浮游生物。一般每亩塘面,可泼洒人粪尿50～100千克,或畜粪150～250千克。施用化肥时氮、磷、钾三种肥料有效成分的比例以1∶1∶0.5为宜。2.投饵池塘水温升至10℃以上时,草、青、鲂鱼开始采食。精饲料日投喂量,一般为每100千克鱼重3～5千克。饲草投喂量应以4小时内吃完为度。
Winter to spring, the temperature rise, in the semi-dormant state of the fish began to swim, looking for food. In order to seize the high yield of pond fish, adult fish should do their best seven tasks in spring breeding. Fertilization pond water temperature of 5 ℃ above, it should be fertilized to plankton in water. General acres of pond surface, sprinkle sprinkle manure 50 to 100 kg, or livestock manure 150 to 250 kg. Fertilizer application of nitrogen, phosphorus and potassium fertilizers three active ingredients ratio of 1: 1: 0.5 is appropriate. 2 feeding pond water temperature rose to above 10 ℃, grass, green, catfish began to feed. Refined feed ration, generally every 100 kg of fish weighing 3 to 5 kg. Forage should be fed within 4 hours for the degree.