随着水产养殖业的迅速发展,养殖生产规模日益扩大,集约化程度不断提高,养殖水域环境日趋恶化,再加上水产品活体贸易的频繁,鱼类疾病难以控制,造成养殖效益大减,挫伤了养殖户的积极性。为了使养殖户来年生产有个好收成,就必须提倡鱼病早防的观点,做到以防为主,防重于治,尽早规划 With the rapid development of aquaculture, the scale of aquaculture is expanding day by day, and the intensification of aquaculture is worsening. The environment of aquaculture is deteriorating. Coupled with the frequent living trade of aquatic products, the fish diseases are hard to control. The enthusiasm of farmers. In order to enable farmers to have a good harvest in the coming year, they must advocate the concept of early prevention of fish diseases so that they can be given priority to prevention and prevention and should be planned as soon as possible