涌浪机在对虾养殖中的增氧作用

溶解氧是对虾正常代谢和生长中所必需的,为了探索对虾养殖增氧方式的新途径,该文进行了涌浪机在高位池凡纳滨对虾高密度养殖条件下增氧情况的研究,并进行了不同天气状况下与水车增氧机增氧效果的对比。试验表明:涌浪机在晴好天气下增氧能力远超同功率水车增氧机。在试验养殖密度约为10000kg/hm2时,0.75kW涌浪机在晴好天气白天时与同功率水车增氧机相比,使池中溶解氧质量浓度平均提高1.24mg/L,但在阴雨天和夜间涌浪机的增氧效果较差,增氧能力与同功率水车增氧机相近。因此,涌浪机在实际应用中需与其他增氧模式相结合使用,将会取得较好的增氧效果。

Oxygenation effect of wave aerator on shrimp culture

Dissolved oxygen is necessary for growth and metabolism of shrimps. In order to find a more efficient aeration way for intensive shrimp farming, the effects of different aeration methods using one 0.75 kW wave aerator and one 0.75 kW paddlewheel aerator under different weather conditions were compared. The experiment was conducted in a concrete pond with film bottom, with Litopenaeus vannamei culture density of 10 000 kg/hm2. The results showed that under fine weather conditions, the aeration effect of wave aerator was better than paddlewheel aerator, which could make the dissolved oxygen concentration in the culture pond higher to 1.24 mg/L. However, in the rainy days or at night, the difference was not very obvious. Therefore, for commercial intensive shrimp farming, it is suggested to use wave aerator combined with other aeration method to ensure the dissolved oxygen demand.