对虾养殖业在我国有悠久的历史 ,曾一度给我国的出口创汇带来了丰厚的经济效益 ,也使许多的虾农致富。可是到了 80年代末期 ,北方的养虾业出现了较大的滑坡。这里的原因很多 ,如养虾池的老化、清池消毒不彻底、饵料质量差和水质污染等 ,甚至由于虾病造成大幅度减产、绝产。根据 Shrimp farming in our country has a long history, once to our country’s export earnings brought huge economic benefits, but also many of the shrimp farmers to get rich. However, by the late 1980s, shrimp farming in the north had experienced a large decline. There are many reasons here, such as aging shrimp ponds, pond disinfection is not complete, poor quality of feed and water pollution, and even shrimp disease caused by a substantial cut, abortion. according to