一、发病情况 当藻类寄生在皮肤后,刺激鱼体增生粘液,大量粘液凝固后,使鱼体上长有一层凹凸不平的白粉状物质,久不脱落,蔓延速度较慢,不规则,直接影响鱼类的生长,直至死亡。此病属植物性病害,主要在春、夏季发生,夏季较为严重。 二、治疗 当肉眼可见鱼体上长有一些白粉时,就把新鲜的枫树叶小枝捆成每捆5公斤,每亩用量25～30公斤,均匀地投入鱼池,并使枫叶全部沉入水中。同时,每亩水深 First, the incidence of When the algae parasitic on the skin, stimulate the proliferation of mucus, a large number of mucus after coagulation, the fish body has a long layer of uneven white powdery substance, long time off, the spread of slower, irregular, direct Affects the growth of fish until it dies. The disease is a plant disease, mainly in spring and summer, summer is more serious. Second, the treatment of visible fish when the body has some long white powder, put the fresh maple leaflets bundles of 5 kg per bundle, the amount of 25 to 30 kg per acre, evenly into the fish ponds, and all the maple leaf submerged into the water. At the same time, water depth per acre