草鱼是我国特有的四大家鱼之一,在淡水养殖业中占着极其重要地位。它生长速度快、个体大、肉味美,草食性。不与人畜争主粮,饲草来源广泛,深受生产者和消费者欢迎。但在生产中,发病率高,死亡严重,挫伤了生产者积极性。我县在渔业区划调查中,草鱼由春片到成鱼 Grass carp is one of the four major domestic fish endemic to our country, occupying an extremely important position in freshwater aquaculture. It grows fast, individual large, meat delicious, herbivorous. Not competing with the main staple food, forage a wide range of sources, welcomed by producers and consumers. However, in production, the high incidence and serious deaths have dampened the enthusiasm of producers. My county in the fisheries zoning survey, grass carp from spring to adult fish