论文部分内容阅读
近几年来,湖南省沅江市10多个乡镇部分成鱼塘进行了乌鳢的套养,取得了较高效益。据2000年的调查统计,该市成鱼塘套养乌鳢的面积4260hm~2,共套养规格100克左右的乌鳢鱼种95.85万尾,年底起捕乌鳢成鱼89.46万尾、1060.74吨、成活率93.3%、尾均商品规格1.18公斤,新增产值1697.18万元、纯利润1531.04万元、乌鳢套养投产比
In recent years, more than 10 villages and towns in Yuanjiang City, Hunan Province, have completed the cultivation of blackflies and achieved relatively high benefits. According to the survey in 2000, the area of 42,000 hm 2 for raising turtles in Chengdangtang of the city totaled 958,500, with a total of 95.85 million cats of about 100 grams of capitatum, and 864,700 cats of 1,060,74 tons of catfish reaching 1060.74 tons by the end of the year. Rate of 93.3%, the end of the average product specifications 1.18 kg, the new output value of 1697.18 million yuan, net profit of 15.3104 million yuan, Ukraine clam raising put into production ratio