冬春季水温低,鱼类活动迟缓,体质普遍下降,抗病能力也随之降低,发病增多。因此,养殖户要加强饲养管理,搞好鱼病防治。一、水体消毒预防首先,应视水体大小,用生石灰进行一次性全塘库水体消毒杀虫。此时,一般水体较小,成本较低,效果又好。低水位而且已经清塘和消毒的库塘,灌水入 In winter and spring, the water temperature is low, the fish activities are sluggish, the general physical decline, the disease resistance ability also decreases, and the incidence increases. Therefore, farmers should strengthen feeding and management, do a good job of fish disease prevention and control. First, water disinfection prevention First of all, should be depending on the size of the water, with lime one-time all pond water disinfection insecticide. At this point, the general body of water smaller, lower cost, good effect. Low water level and ponds have been cleaned and disinfected, irrigation into