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虞城县大杨集乡知理寺渔场一口14亩主养草鱼的池塘,1998年7月18日突然发病,0.75公斤左右的草鱼每天死掉近20条,20日死掉22条,21日邀笔者诊治。见水呈墨绿色,水质过浓,有腥臭味,草鱼摄食能力明显下降,因投青草过多所致,诊析病鱼明显为烂鳃病。当天,全池泼洒50％甲胺磷,呈0.2ppm,隔日按同剂量重复用药一次。施药后第一天死鱼3条,第二天停止死鱼。8月10日,另一口主养草鱼池亦发生同样病症,但症
Yucheng County Dayangji Township Zhili Temple fisheries a 14 acres of main grass carp pond, July 18, 1998 a sudden onset, about 0.75 kg of grass carp die every day nearly 20, 20 dead 22, 21 Invited the author diagnosis and treatment. See the water was dark green, water too thick, stench, feeding ability of grass carp decreased significantly, due to vote too much grass, the diagnosis of diseased fish was obviously rotten gill disease. The same day, Quanchiposa 50% methamidophos, was 0.2ppm, the same dose repeated every other day. Three dead fish on the first day after application and the dead fish on the second day. August 10, the other main grass carp pond also occurred the same illness, but the disease