鱼种规格的大小与体质的好坏,直接影响其越冬存活率。生产的实践又证实,鱼种规格越小,其越冬的成活率也越低。进入秋季,气温水温逐渐降低,鱼种生长由增加体长为主转入增加体重为主,大量积蓄营养物质,以备越冬消耗。因此,必须抓好鱼种的秋季培育,具体应做到 The size of fish species and the quality of the body, a direct impact on its survival rate overwintering. Production practices have confirmed that the smaller the size of the species, the survival rate of its wintering is also lower. Into the fall, the temperature of water temperature gradually decreased, the growth of fish species by increasing the body length of the main increase to increase weight-based, a large number of nutrients, in preparation for winter consumption. Therefore, it is necessary to do a good job in cultivating the autumn species of fish species