1·适量施肥越冬前在越冬池内每亩(1亩=667平方米,下同)施入100~200千克畜禽粪(堆积发酵的最好)。2·灌足越冬水越冬前必须在鱼池内灌足水,认真检查进、排水渠道,严防堵塞,确保畅通。3·尽量缩短冰封期冰封前要根据水源水温和鱼池内水温高低,确定灌、排水时间,尽量保持原池水温 1. Appropriate amount of fertilizer Apply 100-200 kg of livestock manure (best for stacked fermentation) per mu (1 mu = 667 m2, same below) in the winter pool before overwintering. 2. Flooding wintering water Before winter, you must fill enough water in the fish ponds and carefully check the intake and drainage channels to prevent clogging and ensure smooth flow. 3 · try to shorten the ice-free period before freezing According to the water temperature and water level in the pond, determine the irrigation and drainage time, try to keep the original pool water temperature