药物防治鱼病过程中,常常发生效果不佳,甚至鱼类死亡更严重现象,这是为什么呢?原因有以下几种:1药物失效防治鱼病用的药,特别是漂白粉易受潮失效,故漂白粉要用干燥粉末,生石灰要用块灰。平时药物要按规定妥善保管,并在保质期内使用。2拮抗作用当两种以上性质不同的渔药混用时,药物间会产生 Drug prevention and treatment of fish disease process, often ineffective, and even more serious deaths of fish phenomenon, which is why? There are several reasons: 1 drug failure prevention and treatment of fish diseases with drugs, especially bleach vulnerable to damp failure, so Bleaching powder to use dry powder, lime to use lime. Usually the drugs should be properly kept in accordance with the regulations and used within the warranty period. 2 Antagonism When two or more different nature of the fishery drugs mixed, the drug will be produced