草鱼是淡水养殖鱼类中一种生长迅速,饵料广范、肉味鲜美,深受群众欢迎的品种之一。但是,草鱼病多,且防治方法还没有被人们完全认识和掌握。因此,在养殖过程中,草鱼往往死亡率高,成活率低,在群众有着“草鱼无来头,只能是搭头”的说法。1975年5月,我所由于对草鱼病防治措施不力,在28亩咸鱼精养塘中,草鱼出现严重死亡现象,我们及时采用了敌百虫、乐果、漂白粉、食盐等混合药物治疗,草鱼才停止死亡。1976年,进一步总结经验,全面采用上述办法,在3亩以草鱼为主的高产塘,草鱼成活率达90.6%;28亩精养塘、草鱼成活率达86.3%。今年,在七口成鱼塘,80亩水面中,共产成鱼405担,年初 Grass carp is one of the species of freshwater cultured fish that grows rapidly, has a wide range of food, has a delicious meat flavor and is popular among the public. However, many grass carp diseases, and prevention and control methods have not been fully recognized and mastered. Therefore, in the breeding process, grass carp tend to have high mortality rates and low survival rates. In the opinion that the masses have “grass carp no head but can only take the lead”. In May 1975, due to the ineffective measures of prevention and control of grass carp disease, we seriously threatened the death of grass carp in 28 mu of salted fish ponds. In time, we used trichlorfon, dimethoate, bleaching powder, salt and other mixed drugs to treat grass carp. Grass carp stopped to death. In 1976, further lessons learned, the full use of the above approach, in 3 acres of grass-based high-yielding ponds, grass carp survival rate of 90.6%; 28 acres of intensive ponds, grass carp survival rate of 86.3%. This year, in seven into a fish pond, 80 acres of water, a total of 405 born into a fish, the beginning of the year