论文部分内容阅读
一、前言目前国内大银鱼的移植方法主要有亲鱼移植法、仔幼鱼移植法和受精卵移植法。大银鱼通体无鳞,鱼体娇嫩,出水后极易死亡。尤其是在北方地区,由于采用拖网捕捞,经过长时间的拖曳,大银鱼存活的几率就更小了。仔、幼鱼的生命抵抗力和对外界化学性及机械性影响的忍耐力(耐运
I. Introduction At present, there are mainly methods of transplanting silver carp in China, such as broodstock transplantation, larvae transplantation and fertilized egg transplantation. Large silverfish all scales, fish delicate, extremely easy to die after the water. Especially in the northern region, because of trawling, after a long tow, the chance of survival of the big silverfish is even smaller. Aberdeen, juvenile life resistance and external chemical resistance and mechanical endurance