江苏省连云港市岗埠农场职工李冬,从1992年开始利用务工空余的时间养殖牛蛙,以后养殖规模逐渐扩大,目前养蛙场面积已发展到1667米~2(2.5亩)。1998年在牛蛙市场竞争十分激烈,养牛蛙效益日渐下降的情况下,他仍净收入2.35万元。养蛙6年来,累计收入超过 Li Dong, a worker at Gangbu Farm in Lianyungang City, Jiangsu Province, started to raise bullfrogs in 1992 after working spare time. Since then, the scale of breeding has been gradually expanded. At present, the frog farm area has grown to 1,667m ~ 2 (2.5 mu). In 1998, when the competition in the bullfrog market was very fierce, the profitability of bullfrogs was declining. He still earned a net income of 23,500 yuan. In the past six years, the accumulated income has surpassed