一般认为网箱不会出现缺氧的问题,因此缺乏对缺氧和硫化氢中毒的警惕。实际上,网箱养鱼缺氧的可能性还是有的,个别水库的网箱养鱼存在着严重的缺氧和硫化氢中毒隐患,主要原因是:一些养殖户长期在一个水域养殖,箱位多年不变,有的十几年不换箱位,鱼类的粪便残饵长期积累在底部。以1个每箱产鱼2 500 kg的标准网箱计算,每年大约投饵4 000-5 000 kg,其中除 It is generally believed that there is no problem of lack of oxygen in the cage, and therefore lack of vigilance against hypoxia and hydrogen sulfide poisoning. In fact, the possibility of cage fish hypoxia is still some, there are serious hypoxia and hydrogen sulfide poisoning hidden dangers of cage fish culture in individual reservoirs, mainly due to: Some farmers long-term breeding in a watershed, box For many years unchanged, and some ten years do not change the box, fish bait long-term accumulation in the bottom. Calculated on a standard cage of 2 500 kg per cage, about 4 000-5 000 kg are fed per year, with the exception of