(接上期)三、海胆育苗海胆的人工育苗一般分为两个阶段:一是海胆浮游期的培育,二是稚海胆的培育。1.海胆浮游期培育海胆的浮游期一般经历三个过程:漂浮状态、浮游状态和底栖状态。授精孵化后海胆卵在海水中漂浮。此时,人的肉眼是看不见的,一般在玻璃培养瓶中培养,培养瓶中的液 (Continued) Third, sea urchin nursery nursery nursery sea urchin generally divided into two stages: First, the cultivation of sea urchin floating period, the second is the cultivation of juvenile sea urchins. 1. Sea urchin planktonic period of incubation of sea urchins generally go through three processes: the floating state, the state of floating and benthic status. Sea urchin eggs float after incubation in seawater. At this point, the human eye is invisible, generally cultured in glass flasks, bottles of liquid culture