罗氏沼虾养殖在我国已进行多年，养殖规模逐年扩大，２０００年仅江浙沪的养殖面积超过了３０万亩。但从今年４月份开始，罗氏沼虾苗的白体病在我区大面积流行，发病率超过６０％，许多养殖户全军覆没，从育苗场到养殖场都有发生，使罗氏沼虾的养殖面临危机。由于罗氏沼虾养殖 Macrobrachium rosenbergii farming has been carried out in our country for many years, the scale of breeding has been expanding year by year, in 2000 only the breeding area of ​​Jiangsu, Zhejiang and Shanghai more than 30 million mu. However, starting from April this year, the body disease of M. rosenbergii is widespread in our district with a prevalence of more than 60%. Many farmers are annihilated from hatcheries to farms to make Macrobrachium rosenbergii Breeding is facing a crisis. Because of Macrobrachium farming