近年来,鱼类出血病、烂鳃病、肠炎等常见病发生比较普遍,尤其是草鱼更为突出。据调查,死鱼的主要原因是一些养鱼户平时忽视用药预防,等发病死鱼再马上用药防治,效果都不太理想。为了摸索预防鱼类常见病,我们曾连续三年交替使用生石灰、漂白粉、甲胺磷预防鱼病,取得很好效果。如我乡马红桥村五组村民钱玉国承包了八亩鱼池,其中一口二亩鱼池,1988年6月,草鱼患出血病和烂鳃病,连续用几种药进行治疗,效果不佳,死鱼50多公斤,损失500多元。1989年5月上旬、7月上旬和9月上旬,我们采取交替使用生石灰、漂白粉、甲胺磷后,未发现死 In recent years, fish hemorrhagic disease, gill disease, enteritis and other common diseases occur more common, especially the grass carp more prominent. According to the survey, the main reason for dead fish is that some fish farmers usually neglect the prevention of medication and wait for the dead fish to be treated immediately. The results are not very satisfactory. In order to find ways to prevent the common diseases of fish, we have successively used quick lime, bleaching powder and methamidophos to prevent fish diseases for three consecutive years and achieved good results. As my home Ma Hongqiao five villagers Qian Yu country contract eight acres of fish ponds, of which two acres of fish ponds, June 1988, grass carp bleeding and rotten gill disease, continuous treatment with several drugs, the effect is not good , Dead fish more than 50 kilograms, loss of 500 yuan. In early May 1989, early July and early September, we did not find any death after using alternating lime, bleaching powder and methamidophos