预防鱼病投喂药饵,除要准确估计用药量外,还应注意:①饵料以选择鱼喜吃,能研成粉末,且制成药饵后的浮沉与鱼的栖息习性相似者为宜。例如,草鱼需用浮性的米糠等,青鱼需用沉性的菜籽饼等。②若粘性不够,需加粘合剂,以免遇水后不久即散失,影响药效。但也不宜过 Prevention of fish disease feeding bait, in addition to an accurate estimate of the dose, should also be noted: ① feed to choose the fish to eat, can be developed into powder, and made bait after the float and fish habitat similar habits are appropriate . For example, grass carp need to use floating rice bran, blackfish need to use sub-rapeseed cake. ② If the viscosity is not enough, need to add adhesive, so as to avoid losing water soon after, affect the efficacy. But it should not be too