江汉平原涝渍地土壤中苄嘧磺隆的残留动态初探

目的]研究江汉平原涝渍地土壤中苄嘧磺隆的残留动态，为苄嘧磺隆的合理施用以及减小对环境的污染提供理论指导，也为正确评价环境中苄嘧磺隆的监测、迁移以及土壤的修复提供科学的依据。方法]采用高效液相色谱法，测定了苄嘧磺隆在江汉平原涝渍地土壤中的残留。结果]自然条件下苄嘧磺隆在涝渍地6个土系中的降解呈现一定的规律。在无涝渍灾害的江汉系和涝渍灾害最严重的万全系，苄嘧磺隆的半衰期比其他土系长，其他土系之间没有明显的变化。在江汉系、高场系、四湖系、横沟乡系、观音土当系、万全系6个土系中，苄嘧磺隆降解半衰期分别为37．0、16．5、14．9、17．8、19．7、42．0d。结论]土壤中有机质的增加、含水量的增大、温度的增加及酸性土壤都有利于苄嘧磺隆的降解，土壤本身的理化性质是其主要原因。

Residue Dynamics Analysis of Bensulfuron-methyl in Waterlogged-land Soil of Jianghan Plain

Objective] The research aimed to study the residue dynamics of bensulfuron-methyl in soil of waterlogged-land area in Jianghan Plain,provide theoretical instruction for reasonable application of bensulfuron-methyl and pollution abatement in the environment and scientific basis for correct evaluation on the monitoring and transfer of bensulfuron-methyl in the environment and the soil remediation.Method] The residue of bensulfuron-methyl in soil of waterlogged-land area in Jianghan Plain was determined by u...