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当水温超过28℃时防治鱼病就不能按常规方法和常用量施药,因为常规用药的安全浓度一般是在水温22~26℃范围内实验的极限数据。随着水温的升高,水域的理化因子起了变化,有些药物的药理药性也会随之变化,掌握不好就容易出问题。我们在总结经验教训的基础上,把高温季节防治鱼病的注意事项介绍于下:
When the water temperature exceeds 28 ℃ when the prevention and treatment of fish disease can not be applied by conventional methods and the amount used, because the safety of conventional drug concentration is generally in the water temperature 22 ~ 26 ℃ within the limits of experimental data. With the increase of water temperature, the physical and chemical factors of the water have changed, and the pharmacological properties of some drugs will also change. If the control is not good, problems will easily occur. On the basis of summing up the experience and lessons, we introduced the precautions for preventing and treating fish diseases during the hot season under the following conditions: