多年来,我场在家鱼卵人工孵化过程中,常遇到鱼卵提前脱膜的现象,所谓提前脱膜,系指在胚胎的孵化期以前所出现的脱膜现象。这种现象一旦发生,胚胎的畸形率也必然相应增加,轻者致使孵化率降低,重者造成鱼苗大批死亡。例如,一九七一年六月 Over the years, my field of artificial fish eggs in the process of hatching, often encountered in advance the phenomenon of fish eggs in advance, the so-called early release, refers to the incubation period in the embryo before the emergence of the phenomenon. Once this phenomenon occurs, the embryo deformity rate will inevitably increase accordingly, the light causes the hatching rate to reduce, in the serious case causes the fry to kill in large numbers. For example, June 1971