海盐县百步镇是水产养殖较发达的乡镇,水利条件较优越,全镇2005年淡水养殖南美白对虾近2500亩、罗氏沼虾1500亩,然而今年4～5月间,有13户5亩南美白对虾养殖户、涉及面积82出现南美白对虾入池两三天后即大部分死亡的现象,有的农户放苗死亡后排干重新再放再死,重复三次。825亩累 Baibu Town, Haiyan County, a well-developed aquaculture township, superior water conditions, the town freshwater aquaculture in 2005 nearly 2500 acres of white shrimp, Macrobrachium 1,500 acres, but from April to May this year, there are 13 5 acres South American white shrimp farmers, involving an area of ​​82 appeared white prawn into the pool two to three days after most of the death phenomenon, and some peasants died after draining dead re-release and then die, repeated three times. 825 acres tired