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黑鲷的临界状态(水温3.5℃下致死),2003年冬天自然条件下该鱼能过冬,但碰到像2004年冷冻,连续受冻就会致死。越冬期鱼种因摄食少,体质弱,开春后易感染疾病,为了防止该情况的出现,我们采用黑鲷塑料薄膜大棚越冬。夏花鱼苗经过几个月的生长,到11月下旬,规格均在每尾150克左右,未达到商品鱼出售的标准。要进行越冬管理,为了使黑鲷安全越冬,05年11
Black sea bream critical state (water temperature to death at 3.5 ℃), the winter of 2003 under natural conditions the fish can survive the winter, but as encountered in 2004 frozen, continuous freezing will kill. Overwintering fish species due to less food intake, physical weakness, easy to become infected after the spring disease, in order to prevent the occurrence of this situation, we use black snapper plastic film greenhouse winter. Summer fry after several months of growth, to the end of November, the specifications are about 150 grams per tail, did not meet the sale of fish standards. To carry out winter management, in order to make winter black snapper safe, 05 11