为探讨1~+龄草鱼(♀)×赤眼鳟(♂)杂交F_1与草鱼生长速度的差异性,以及F_11~+龄群体中生长速度的分离现象。本研究设计了1~+龄草鱼和杂交F_1单养60天以及单养结束后混养60天的生长对比试验,对两种1~+龄鱼的生长特性进行评价,旨在筛选出与草鱼生长性能相当,甚至更优的F_1群体,为杂交F_1在养殖生产上的推广提供基础参考。一、材料和方法 In order to investigate the difference of the growth rate of F 1 and grass carp between 1 ~ + old grass carp × red-line trout (♂) and the separation of growth rate in F_11 ~ + age group. In this study, we compared the growth of 1 ~ + grass carp and hybrid F_1 monoculture for 60 days and the polyculture 60 days after monoculture to evaluate the growth characteristics of two species of 1 ~ Growth performance is equivalent, or even better F_1 population, for the hybrid F_1 in the breeding production to provide the basis for the promotion. First, materials and methods