近年来水产养殖业发展迅猛,池塘养殖的密度不断加大,水体的投入也在增加,当水体超过负载能力时,极易造成水体富营养化和水环境恶化,如水体氨氮、亚硝酸盐含量过高,pH值过大,这些不良因子诱发多种鱼病的发生。尤其是郑州、开封沿黄养鱼密集地区连续几年爆发了规模大且死亡率极高的鲤鱼急性烂鳃病。该病来势迅猛,传染力极强,征兆病状 In recent years, the rapid development of aquaculture, ponds continue to increase the density of water, water inputs are also increased, when the water over the load capacity, can easily lead to eutrophication and water environment deterioration, such as water ammonia, nitrite content Too high pH value is too large, these adverse factors induce the occurrence of a variety of fish diseases. Especially in Zhengzhou, Kaifeng along the Yellow River fish intensive areas for several consecutive years broke out large-scale and high mortality carp acute gill disease. The disease is extremely rapid, highly contagious, symptoms symptoms