2005年8月20日我们水产病害防治中心接到本县望直港镇养殖大户胡小波的求助电话,反映他320亩鱼塘已连续发病20多天,前后死鱼2000多公斤,光药费就花了近万元,现仍未停止,我们立即赶赴现场,进行了调查问诊。一、塘口发病情况及用药情况据介绍,塘口从7月25日开始发病,当时每天只捞 August 20, 2005 Our Center for Aquatic Disease Control received a telephone call from Hu Xiaobo, a farmer in Wangzhonang Town in our county, showing that he has been suffering from continuous illness for more than 20 days in 320 mu fish ponds, with more than 2000 kilograms of dead fish before and after. It took nearly million, is still not stopped, we immediately rushed to the scene, conducted a survey. First, the incidence of Tangkou and medication According to reports, Tangkou onset from July 25, when fishing only day