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bei fang di qu yue dong qi yu bing fang zhi ji shu
Author(s): 
Pages: 27-30
Year: Issue:  4
Journal: Heilongjiang Fisheries

Keyword:  鱼病防治鱼类肥满度越冬鱼池越冬期越冬池养殖经济效益越冬管理粘孢子虫病操作过程碘孢虫;
Abstract: <正>鱼类越冬的成败,直接关系到养殖经济效益。鱼类越冬管理中,不但要重视溶氧的变化,也应注重鱼病防治。引起病害的主要原因有以下几点:一是越冬鱼池和越冬鱼没有严格清塘消毒,使大量的病原体带人越冬水体。二是越冬鱼类肥满度过低,鱼体瘦弱,免疫力下降。三是在拉网操作过程中,引起鱼体损伤严重。四是越冬鱼放养密度过大。针对上述原因,在预防治疗方面可采取以下有力措施:一、越冬前的准备1、越冬池的选择
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