我国目前内陆水域防治鱼病常用的含氯消毒剂有漂白粉、漂白糖、二氯异氰尿酸、二氯异氰尿酸钠、三氯异氰尿酸等五种。由于多年来人们不了解含氯消毒剂有效含量和性能特点，往往习惯局限于用前两种，特别是漂白粉，其实后三种是更新换代产品。生产实践证明，二氯及三氯产品虽然 China currently inland waters prevention and treatment of fish diseases commonly used chlorine disinfectant bleach, bleach sugar, dichloroisocyanuric acid, sodium dichloroisocyanurate, trichloroisocyanuric acid and other five. Due to the fact that people do not understand the effective content and performance characteristics of chlorine-containing disinfectants for many years, they are often used to the first two types of products, especially bleaching powder. In fact, the latter three products are replacement products. Production practice has proved that, although dichloro and trichloro products