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在水产养殖过程中,水质条件的好坏直接影响着鱼类的生长和疾病的发生。因此,了解水环境的特点、改善水质对预防鱼病、提高养殖产量增加经济效益有着重要意义。结合多年实际工作经验,笔者认为与鱼病发生有着密切关系的环境因子有: 1.水温:水温高水体中细菌繁殖快,鱼的发病率也高。水体中气单胞菌的量可达到占细菌总量的20～26.7%,当水温在13℃以下时,很少发生气单胞菌引起的疾病。水温在14～
In the aquaculture process, the quality of the water quality directly affects the growth of fish and disease. Therefore, to understand the characteristics of water environment and improve water quality is of great significance to prevent fish diseases and increase the yield of aquaculture to increase economic benefits. Combined with years of practical work experience, I believe there is a close relationship with the occurrence of fish diseases environmental factors are: 1. Water temperature: high temperature water bodies of bacteria multiply fast, the incidence of fish is also high. The amount of Aeromonas in water body can reach 20 ~ 26.7% of the total bacteria. When the water temperature is below 13 ℃, the disease caused by Aeromonas hardly occurs. Water temperature at 14 ~