目前,我国水产养殖业已告别短缺经济,由产量速度型向质量效益型转化,水产品市场已由卖方市场转向买方市场,市场消费对养殖经济效益有着至关重要影响。 (一)品种效益 养鱼户所养的品种不同,其效益则有明显的差异。例如,去年7～8月间,达到商品鱼规格的鲤鱼每千克6元,可250克以? At present, China’s aquaculture has bid farewell to the shortage of economy, from the speed of production to quality and efficiency, aquatic products market has been shifted from the seller’s market to the buyer’s market, and the market consumption has a vital impact on the economic benefits of aquaculture. (A) Variety Benefit Cultivation of different varieties of fish farmers, the benefits are significantly different. For example, from July to August last year, carp, which reached the specifications of commercial fish, cost 6 yuan per kilogram, which can be 250 grams.