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1995年春季，营口地区很多育苗场在河蟹苗孵化过程中发生了严重的病害，短时间内蚤状幼体大量死亡，造成了巨大的经济损失。为查明蟹苗的死亡原因，给今后蟹苗生产防治病害提供科学依据，我们对发生病害的蟹苗进行了全面的细菌分离，共分离出21株菌，并用常见的26种抗菌药物对?
In the spring of 1995, many nurseries in Yingkou suffered severe diseases during the incubation process of crabs and crabs. A large number of flea larvae died in a short period of time, resulting in huge economic losses. In order to find out the cause of death of crabs and provide scientific basis for the future prevention and cure of crabs, we conducted a comprehensive bacterial separation of the diseased crabs and isolated 21 strains of bacteria and used the common 26 kinds of antibacterials to correct them.