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海水盐度不同,其结冰点就不同,将鲈鱼越冬池水盐度调至10‰左右,使越冬池水结冰点升高,冬季池水易结冰,由于结冰后冰层的覆盖隔离了水气交换,同时池塘吸收光照热量,这样池水底层水温就比正常海水池塘提高温度2～3℃。由此我们对鲈鱼池塘大面积越冬技术进行了试验,取得了成功,经专家鉴定,本成果达国内领先水平。
The seawater salinity is different, the freezing point is different, the bass overwintering pool water salinity adjusted to about 10 ‰, so that the freezing point of winter pool water increased in winter, easy to freeze the water pool, due to the ice after the ice cover the isolation of water Gas exchange, while ponds absorb light heat, so that the water temperature at the bottom of the pool than normal sea water ponds to raise the temperature 2 ~ 3 ℃. As a result, we have tested the large-area overwintering technology of seabream ponds and achieved success. After the experts have identified the results reached the leading domestic level.