1.用五倍子树叶(盐肤木叶)预防细菌性鱼病效果好。1989年我们在甘肃省宁县采集五倍子树叶,用来预防细菌性鱼病,200亩池塘用药后很少发生细菌性鱼病。具体方法如下:从6月上旬开始采集五倍子树叶,在池塘角以堆肥的形式堆放(10公斤/亩),10天左右搅动池水,使药液均匀地溶入水中,每20天为一个周期。(雷中平) 1. With gallnut leaves (salt skin leaves) to prevent bacterial fish disease is good. In 1989, we collected gallnut leaves in Ningxian County, Gansu Province, to prevent bacterial fish disease. After 200 mu ponds, bacterial fish disease rarely occurs. The method is as follows: Collect gallnut leaves from the beginning of June, stack it in the form of compost at the pond corner (10 kg / mu), stir the pool water for about 10 days to make the liquid evenly dissolve in the water, and every 20 days is one cycle. (Ray Zhongping)