利用网箱培育鱼种,做为大水面资源充实的有效途径之一,日益被人们广泛采用。可是由于北方鱼苗孵化时间较晚,鱼种在网箱的生长时间较短,常常有那么一部分鱼种达不到出箱规格(出箱规格为三寸以上),需要继续培育。利用网箱养成鱼也需要把头年的鱼种,经过越冬后,在第二年进行成鱼养殖。以上原因,鱼种在网箱越冬的试验,尤其是在冰天雪地的北方就显得更有必要了。去年冬天,我们在横山岭水库进行鱼种网箱越冬试验,初获成功。通过实践证明,鱼种 The use of cage cultivation of fish species, as an effective way to enrich the surface water resources, is increasingly widely used by people. However, due to the late hatching time of fry in the north, species of fish in the cage growth time is short, often so part of the fish species not up to the box size (box size is more than three inches), need to continue to nurture. The use of cage culture fish also need the first year of species, after winter, into the second year of adult fish farming. The above reasons, the test of winter in the cage species, especially in the snow-capped north of the more necessary. Last winter, we successfully conducted the overwintering trial of fish species cage in Hengshanling Reservoir. Through practice, species of fish