沙县地处闽西北山区,水源充沛,青饲料来源丰富,池塘主养草鱼已成为当地淡水渔业主要养殖模式之一。全县现有池塘养鱼面积一万亩,池塘养鱼产量占渔业总产量的70%左右。由于大部分池塘属传统的常规养殖,放养密度稀,故单产和效益较低。2004年～2005年承担了县科技局下达的“山区池 Shaxian County is located in the mountainous region of northwestern Fujian, with abundant water and rich sources of green fodder. The grass carp has become one of the main breeding modes of local freshwater fisheries. The existing pond area of ​​10,000 mu of fish, pond fish production accounted for about 70% of the total fishery output. Because most of the ponds are traditional conventional farming, stocking density is thin, so yields and benefits are low. From 2004 to 2005, it assumed the “mountain pool” issued by County Science and Technology Bureau