一、亚硝酸盐1.养硝池中亚硝酸盐是如何产生的?养殖池塘中的残饵、粪便及死亡藻类等含氮有机物经过异养性细菌的作用,蛋自质及核酸会慢慢地分解,产幸大量的氨等含氮有害物质,而有毒的氨在过亚硝化t]l菌或光合细菌的作用下很快转化成亚硝酸,而亚硝酸与一些金属离子结台后形成亚硝酸盐,亚硝酸盐又口J以与胺类物质结合,形成具有强烈致癌作用的亚硝胺。2.为什么水产动物的养殖中后期池塘的亚消酸古配普遍偏高了因为在养殖的前期池塘的残饵、粪便等含氮有机物较少,池中原有的硝化细菌有能力降解其所产生的亚硝酸款,一谴着养殖过程中的投饵量增加,亚硝酸盐的量也不断加大,但是分解亚俏酸盐的俏化细菌产生速度很慢,犬约需要20多小时才能繁殖一代.加上养殖者大量投放几分钟最多十分钟就繁殖一代的光合细菌芽抱杆菌等 1. Nitrite 1. Nitrite in a nitrate cell is produced? The residual organic matter in the pond, such as bait, excrement and dead algae in aquaculture ponds, undergoes the action of heterotrophic bacteria. Decomposition, production capacity of a large number of ammonia and other nitrogenous harmful substances, and toxic ammonia in the nitrosated t] l bacteria or photosynthetic bacteria quickly converted to nitrous acid, nitrite and some metal ions form Taiwan after the sub Nitrates, nitrites and mouth J with amine substances to form a strong carcinogenic nitrosamines. 2. Why the aquaculture of aquaculture ponds in the later period of the Asian acid generally high because the pre-breeding ponds in the remnants of feces and other nitrogen-containing organic less, the original pool of bacteria in the ability to degrade nitrifiers Of nitrous acid models, a condemned the increase in feeding during the breeding process, the amount of nitrite also continue to increase, but the rapid decomposition of star-forming bacteria flaccid bacteria produced slowly, the dog takes about 20 hours to breed A generation, plus a large number of farmers put a few minutes up to ten minutes to breed a generation of photosynthetic bacteria Bacillus bacteria