高纬度地区养鱼由于受有效积温少,光照不足,鱼池产量低,鱼个体小,比较效益差。为了提高产量,我县推广了浅水增温养殖技术,降低了生产成本,产量、产值比较效益显著提高。通过三年实践,亩产由原来的150kg提高到250kg,生产成本由每亩1000元降低到600元,亩纯收入增加300元。其技术要点如下: High-altitude fish in the area due to the effective accumulation of less temperature, lack of light, low production of fish ponds, small fish individuals, the relatively poor efficiency. In order to increase the output, the county popularized the shallow water warming breeding technology, reduced the production cost, and remarkably improved the yield and the output comparative benefit. Through three years of practice, the mu production increased from 150kg to 250kg, the production cost was reduced from 1,000 yuan per mu to 600 yuan, and the net income per mu increased by 300 yuan. The technical points are as follows: