为了能在北方地区自然条件下大面积推广养殖淡水鲨鱼,我们于2004年在池塘进行淡水鲨鱼养殖试验,取得了较好的成效。现将试验情况总结如下:一、材料和方法1.清塘试验池4个,总面积5.2亩,水深1.5～2米,经过一个冬天的曝晒,在鱼种放养前10天用生石灰全池均匀泼洒,用量为75千克/亩。 In order to popularize freshwater sharks in large areas under natural conditions in northern China, we conducted freshwater shark breeding experiments in ponds in 2004 and achieved good results. Now the test situation is summarized as follows: First, the material and methods 1 Qingtang test pool 4, a total area of ​​5.2 acres, water depth 1.5 to 2 meters, after a winter exposure, 10 days before stocking with quicklime whole pool uniform Spilled, the amount of 75 kg / mu.