近年来我国水产养殖规模不断扩大,集约化和工厂化程度越来越高,但养殖水域污染日趋严重,导致病害的频繁发生,严重困扰着水产养殖业的健康发展。特别是对虾养殖业中的严重疾病,使中国水产业蒙受了巨大损失。以对虾养殖为例,1988年至1992年间,对虾养殖业年产值约40多亿元(不含对 In recent years, the scale of aquaculture in our country has been continuously expanded, the degree of intensification and factoryization have been getting higher and higher, but the pollution in aquaculture waters has become more and more serious, resulting in the frequent occurrence of diseases, seriously harassing the healthy development of aquaculture. In particular, serious diseases in shrimp farming have caused huge losses to China’s aquaculture industry. Take shrimp farming as an example. From 1988 to 1992, the annual production value of shrimp farming was about 4 billion yuan