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鱼病流行季节,定期对鱼塘施用药物,可杀灭鱼体及水体中的各种病原体,起到防治鱼病的作用。但若施药不当,不但起不到防病效果,还会适得其反,加重鱼病,甚至引起死亡。因此,鱼塘施药必须注意以下问题。1.对症用药一般对濒于死亡的病鱼或病死而未腐烂的鱼
Seasonal epidemics of fish diseases, the regular application of drugs to fish ponds can kill fish and water in a variety of pathogens, play a role in the prevention and treatment of fish diseases. However, if the pesticide is not properly applied, not only will it not be able to achieve any preventive effect, it will be counterproductive, aggravating fish diseases and even causing death. Therefore, fish ponds must pay attention to the following issues. 1. symptomatic medication generally on the verge of death of sick fish or dead but not rotten fish