论文部分内容阅读
鱼类越冬易死亡,现根据鱼类死亡的不同原因,推荐如下对策:1 越冬池塘的选择。选择保水性好,池底平坦,淤泥较少(最多不超过20cm)。无水草或水草较少的池塘作为越冬池塘;池塘水深要大于2m;另外,池塘周围无工业污水和大量生活污水。2 肥水越冬。越冬前要在池中适当施肥,在越冬过程中,还应定期检查池水透明度、水色和溶氧,保持池水一定的肥度。
Fish are more likely to die over the winter, according to different reasons for the death of fish, the following measures are recommended: 1 winter pond selection. Select good water retention, bottom flat, less sludge (up to no more than 20cm). Ponds with no water or grass are used as wintering ponds; the depth of ponds should be more than 2m; in addition, there is no industrial sewage and lots of domestic sewage around the ponds. 2 fertilizer overwinter. Appropriate fertilizer in the pool before winter, in the winter process, should also be checked regularly water transparency, water color and dissolved oxygen, to maintain a certain degree of fat water.