一、成活率低的原因1.鱼苗在夏花阶段个体较小,仅能摄食水藻、芜萍等,而在人工饲养的条件下可能没有这些适口的饵料,这就导致夏花鱼种下池后生长较慢、体质差、易生病,成活率低。2.一龄草鱼种比较贪吃,抢食猛,但是由于草鱼的体内缺少纤维素分解酶,所以对纤维素的消化能力差,那 First, the reasons for the low survival rate 1. fry in the summer stage individual small, can only eat algae, Wu Ping, etc., and in the artificial feeding conditions may not have these palatable bait, which led to summer flower species after pool Slow growth, poor health, easy to get sick, low survival rate. 2. First-class grass carp species more greedy, snatching fierce, but due to the lack of cellulolytic enzymes in the body of grass carp, so poor digestibility of cellulose, that