入冬后,气温逐渐下降,我国大部分地区开始进入封冻结冰期,因此,做好各种水产种养殖品种的安全越冬管理是一项非常重要的工作。1常规鱼类鱼类属于变温动物,当水温降至8~10℃时,鱼类摄食很少,直至进入冬眠。这时如若管理不当,很易出现大批死亡。鱼种越冬池面积以1300～4000m2、水 After winter, the temperature gradually dropped, and most of China began to enter the freezing and thawing period. Therefore, it is a very important task to do a good job in the safe winter management of various aquaculture species. 1 Conventional fish Fish are warm-blooded animals, when the water temperature dropped to 8 ~ 10 ℃, little fish intake until hibernation. At this time if properly managed, it is easy to see a large number of deaths. Overwintering species of fish pond area to 1300 ~ 4000m2, water