近年来,郑州市水产业发展很快,集约化程度提高,养殖单产不断增加,但鱼类病害出现鱼病种类多,流行广,病因复杂,死亡量大,治愈困难等特点。随着郑州市水产市场准入制度深入执行,无公害养殖成了水产养殖的技术关键,要改变以前那种为防病治病大量使用抗生素等药物的养殖理念,控制禁 In recent years, Zhengzhou aquaculture developed rapidly, the degree of intensification increased, breeding yields continue to increase, but there are many fish diseases fish diseases, widespread, complex causes, large amounts of death, difficult to cure and so on. With the further implementation of the aquatic market access system in Zhengzhou, pollution-free aquaculture has become the key technology of aquaculture, to change the previous kind of anti-disease treatment for large-scale use of antibiotics and other drugs farming concept of ban