采用浓度为 1.0、2 .0、3.0、4 .0、5 .0、6 .0、7.0、8.0、9.0和 10 .0 μg/ml的稳定性粉状二氧化氯 (ClO2 )溶液分别浸泡草鱼、鲢和鳙等 3种鱼类的受精卵 2 0min后 ,用平皿法测定附着在受精卵上的细菌数量 ,结果表明用ClO2 溶液浸泡鱼类受精卵 ,对附着在受精卵上的细菌有明显地清除作用 ,并且随着ClO2 溶液浓度的升高对受精卵上附着菌的清除作用越强。当ClO2 溶液的浓度为 2 .0 μg/ml以上时 ,对受精卵上附着菌的清除作用优于浓度为 1.0 μg/ml的孔雀石绿溶液 Grass carp was immersed in a solution of stabilized powdered chlorine dioxide (ClO2) at concentrations of 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0 and 10.0 μg / , Silver carp and bighead carp two kinds of fish after 20min, the plate method to determine the number of bacteria attached to the fertilized eggs, the results show that the use of ClO2 solution soaked fish zygotes, bacteria attached to the fertilized eggs were obvious Scavenging effect, and with the concentration of ClO2 solution on the adhesion of fertilized eggs on the stronger the role of bacteria. When the concentration of ClO2 solution was above 2.0 μg / ml, the scavenging effect on the attached bacteria on the fertilized eggs was better than that of the malachite green solution at a concentration of 1.0 μg / ml