我市 1993年首次出现淡水暴发鱼病 ,开始发病水面较少。最近几年发病水面扩大 ,死亡率较高 ,给渔民造成较大的经济损失。 2 0 0 1年我市发病水面达 6 0 0 0余亩 (其中池塘 2 0 0 0多亩 ,水库4 0 0 0多亩 ) ,死亡养殖鱼类超过 10 0 0 0公斤 ,损失超过 10万元。 2 0 0 1年我们对 The city first appeared in 1993 freshwater outbreak of fish disease, the onset of water less. In recent years, the incidence of water surface expansion, higher mortality, causing fishermen greater economic losses. In 2001, the incidence of water in our city reached 60,000 mu (including 2,000 mu of ponds and 40,000 mu of reservoirs), more than 10,000 kilograms of dead farmed fish and over 100,000 lost fish yuan. We are right in 2001