一龄草鱼成活率低,规格小,数量严重不足,成为当前鱼种生产的主要障碍。怎样才能提高其成活率呢?笔者认为应采取以下技术措施: 一、提早放养为缓和夏花草鱼和配养鱼之间在水质、饵料、空间上的矛盾,应尽早获得草鱼苗。目前在生产上采用“南苗北调”或温室人工繁殖早繁苗,效果较为明显。但放养过早,鱼苗遇到低温易冻死,故应将水温稳定在15℃ First-age grass carp survival rate is low, small size, a serious shortage of numbers, become the main obstacles to the current production of fish species. How to improve its survival rate? I believe that the following technical measures should be taken: First, early stocking In order to ease the summer grass carp and fish with water quality, food, space on the contradiction should be obtained as soon as possible grass carp fry. At present, production in the use of “South Miao north tune” or greenhouse propagation of early seedling man-made, the effect is more obvious. However, stocking too early, cold fry fry die, so the water temperature should be stable at 15 ℃