阿特拉津是目前世界上广泛使用的除草剂之一，在我国主要使用于东北和华北地区．近年来我国一些地区接连发现了灌溉含有阿特拉津河水的水稻苗受害事件．以河北省宣化农药厂的生产工艺为例，通过使用概率评价的方法，进行了阿特拉津对水稻危害的风险分析研究．结果表明，这种风险不仅与工厂废水中阿特拉津的排放有关，而且还取决于河水的流量及其风险率．所得结果与该厂历史上的实际情况相吻合 Atrazine is one of the most widely used herbicides in the world and is mainly used in northeast and north China in our country. In recent years, some areas of our country have discovered successively the incident of irrigation of rice seedlings containing Atrazine River water. Taking the production process of Xuanhua Pesticide Factory in Hebei Province as an example, the risk analysis of atrazine on rice was conducted by using probability evaluation method. The results show that this risk is not only related to the discharge of atrazine in factory effluents but also to the river flow and its risk ratio. The result is in line with the actual situation in the plant’s history