让鱼类安全越冬,是来年丰收的关键,也是广大渔农及养殖单位迫在眉睫的一件大事。现就新华通讯社水性鱼类与暖水性鱼类越冬注意事项介绍如下,供参考。一、选池越冬。池宜低于地平面,位于背风向阳处。要保证水源充足,注排水便利,水深控制在1.5米以上,暖水性鱼类还必须保证冷热水供应及时。水质要清新,溶氧量结冰前应在10毫克/升以上,冰期保持在5毫克/升左右,PH 值宜在7.5—8.5之间,同时要求越冬池池底粘土夯实,保证池底平坦,保水性能好。对于热带暖水性鱼类必须在池上建造塑料大棚保温。鱼池面积稍大为好,一般在2亩—5亩,以利用大池池塘条件等。暖水性鱼类还 It is the key to the bumper harvest in the coming year that the winter fish are safe. It is also a pressing issue for the vast numbers of fishermen, farmers and aquaculture units. Xinhua News Agency now on the water-based fish and warm water overwintering considerations are as follows, for reference. First, the pool over the winter. Pool should be below the ground level, located in the lee sunny place. To ensure adequate water supply, water drainage convenience, water depth control at 1.5 meters above, warm water fish must also ensure timely supply of hot and cold water. Water quality should be fresh, dissolved oxygen should be above 10 mg / l before freezing, ice period should be kept at about 5 mg / l, PH value should be between 7.5-8.5, at the same time, it is required to compaction the bottom of the pool by the winter pool to ensure that the bottom of the pool is flat Good water retention. For tropical warm water fish must be built in the pool plastic greenhouse insulation. Fish pond area slightly larger, generally 2 mu -5 acres, in order to use the pond conditions and other ponds. Warm water fish also