鱼病的发生一般在4～6月和8～10月,在发病季节前进行药物预防,可以受到较好的防病效果。 1.体外药物预防。①漂白粉挂篓。可以预防草、青鱼由细菌引起的烂鳃病和赤皮病。草鱼挂篓是挂在食场用竹竿搭成的三角架上。通常挂篓3～6只,每只篓内装漂白粉100～150克。篓内可以放石头作为沉子,但篓要接近水表层,挂篓前要停食,1～2天。青鱼挂篓采取沉水一 The occurrence of fish disease is generally in April and June and August to October, before the onset of the season for drug prevention, can be a better anti-disease effect. 1. In vitro drug prevention. ① bleaching powder hanging baskets. Can prevent grass, herring bacteria caused by gill rot and red skin disease. Grass carp hanging basket is hung on the tripod with a bamboo tripod on the tripod. Usually hanging basket 3 to 6, each basket containing 100 to 150 grams of bleach. The basket can be placed as a sinking stones, but the basket should be close to the surface of the water, before hanging basket to stop eating, 1 to 2 days. Herring hanging basket to take a sink