北方地区红鳍东方鲀(以下简称河鲀)养殖已形 成规模化和产业化。由于河纯需养殖两年才能达到 商品规格,因此,一龄鱼越冬就成了重要的生产环 节,并直接影响整个养殖过程的成败。近几年来,昌 黎县河鲀越冬水霉菌病频发,尤其最近两年最为严 重。全县数十家越冬厂均有不同程度的感染,有的 死亡近半,有的全军覆灭,损失惨重。今年,一些越 冬厂又开始出现了水霉菌,并呈扩大趋势。 Red fins in the northern part of the East 鲀 (hereinafter referred to River 鲀) farming has become a large-scale and industrialization. As river pure need to cultivate two years to reach commodity specifications, therefore, the first instar fish overwinter has become an important production link, and directly affect the success or failure of the entire farming process. In recent years, Changli County, river overwintering water mildew disease, especially in the most serious two years. The county dozens of overwintering plants have varying degrees of infection, and some deaths in nearly half, and some armies destroyed, suffered heavy losses. This year, some overwintering plants began to appear moldy fungi, and showed an upward trend.