养鱼池塘冬季清淤,是淡水渔业生产上的一项必不可少的工作。近年来,许多养殖承包户,只注重眼前利益,加大放种,投饲、施肥的投入。而忽视了必要的池塘清淤工作:年复一年,池底淤泥越淤越厚,一般池塘淤泥厚度在0.5m以上,有些精养殖塘甚至厚达1m左右;大多数池塘都是20世纪80年代利 Winter dredging ponds, freshwater fisheries production is an essential work. In recent years, many breeding contractors, only focus on the immediate interests, increase investment, feeding, fertilization inputs. While ignoring the necessary pond dredging work: year after year, the bottom silt silt thicker, the general pond sludge thickness of 0.5m or more, some intensive aquaculture ponds or even up to about 1m thick; most ponds are the 20th century 80 Era