chelunchongbingshiluofeiyudechangjianbingliuxingbijiaoguangfan。zaichuchunhechuxiayijiyuedongqijiaoduo
，tebieshizaiyangzhimidugao
，shuizhijiaofeideqingkuangxiagengrongyibeiganran。daliangchelunchongjishengkeyinqiluofeiyudaliangsiwang。yinci，ganranchelunchonghouyingjishijinxingzhiliao。

預防與治療

定期進行檢查，掌握病情，及時治療。發病池可用水體終濃度為0.7毫克/升的硫酸酮或0.5毫克/升的硫酸銅與0.2毫克/升的硫酸亞鐵合劑，全池遍灑，病情嚴重的池塘，可連用2次-3次。