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越冬后的鱼池,水温逐渐回升,池中的浮游生物大量繁殖,鱼类也恢复活力开始吃食。同时,各种病原菌也急剧繁衍,造成鱼病爆发。因此越冬后加强鱼塘管理,及早防治鱼病,对渔业生产极为重要,现将春季鱼病防治的主要措施介绍如下: 1、封冰后,当发现鱼类患有寄生虫病,可采用敌百虫挂袋方法;若发现冰下鱼经常浮头,可在冰下挂袋施肥,培植浮游植物,一亩水面用2斤尿素和5—6斤磷肥。
After the winter fish ponds, the water temperature gradually rose, the pool of plankton blooms, fish also revitalized began to eat. At the same time, a variety of pathogens have also rapidly multiplied, causing a fish disease outbreak. Therefore, after winter to strengthen the management of fish ponds, early prevention and treatment of fish diseases, fisheries production is extremely important, now the main measures for prevention and treatment of fish diseases in spring are as follows: 1, ice seal, when the fish found parasitic diseases can be enemies 100 insects hanging bag method; if found under the ice fish often floating head, you can hang bags of fertilizer in the ice to cultivate phytoplankton, a mu of water with 2 kg of urea and 5-6 kg of phosphate fertilizer.