据农业部行业专项“冷水性鱼类养殖产业化研究与示范”冷水鱼养殖企业调研结果表明,2010年山东冷水鱼养殖面积大,商品鱼年总产量高,年产苗种多。养殖主产区多集中于冷水资源较为丰富的鲁中南地区,在我国优质冷水鱼养殖方面成绩斐然。但是也存在一些问题,比如说:养殖企业多是 According to the Ministry of Agriculture industry-specific “cold water aquaculture industrialization research and demonstration ” cold water fish farming enterprises survey results show that in 2010 Shandong cold water fish aquaculture area, the annual output of fish products, with an annual output of more seedlings. The main breeding areas are mostly concentrated in central and southern Shandong Province, where the cold water resources are abundant. The achievements of high-quality cold-water fish breeding in China are impressive. But there are also some problems, such as: farming companies are more