有些养殖户对鱼类氨氮中毒、池鱼药害和泛塘死鱼难以区别。我镇一渔民的鱼塘因氨氮含量过多中毒引起鱼类死亡,误认为缺氧泛塘,于是用生石灰泼洒抢救,其结果反而造成更大损失。鱼类氨氮中毒是因氨氮含量过多中毒引起鱼类死亡。池鱼药害是鱼类误食有毒物质或是有毒污水进入鱼池,使鱼类中毒死亡。泛塘是因为池塘水体中溶氧量降低到不能满足鱼类生理上最低需要量时,造成鱼类呼吸困难,窒息死亡。笔者现综 Some farmers on fish ammonia nitrogen poisoning, pond fish poisoning and Pan dead fish is difficult to distinguish. My town a fisherman’s pond due to excessive ammonia nitrogen poisoning caused the death of fish, mistaken for hypoxia pan, so spilled lime rescue, the result actually caused greater losses. Ammonia nitrogenosis in fish is caused by too much ammonia nitrogen poisoning caused by fish deaths. Ikebana phytotoxicity is poisonous fish or poisonous sewage into the fish pond, so that fish poisoning death. Pan Tong is because pond water dissolved oxygen can not meet the minimum physiological requirements of fish, causing respiratory difficulties, suffocation. I now covered