溴氰菊酯农药在土壤中的残留·迁移研究

[目的]研究不同浓度的溴氰菊酯农药在土壤中的残留状态和迁移动态。[方法]采用室内柱淋洗法,测定不同浓度的溴氰菊酯农药在土壤中的淋溶过程。[结果]在强度大、历时较短的等量淋溶水的作用下,随着溴氰菊酯农药浓度的增大,溴氰菊酯在土壤中的迁移能力逐渐减小,出现相对残留量最大的深度也随之减小。[结论]溴氰菊酯对地下水污染具有潜在危险性,要合理使用溴氰菊酯农药。

Study on Residues and Migration of Deltamethrin in Soil

[Objective]The research aimed to study the residues and migration dynamics of deltamethrin in soil.[Method]The leaching experiment was made under laboratory conditions to simulate the leaching process of deltamethrin in soil.[Result]The degree of migration and residues of deltamethrin were related to the concentration.With the increasing concentration of deltamethrin,the ability of its migration decreased and the depth where the content of deltamethrin was the largest decreased either.[Conclusion]Deltamethrin had the potential danger for groundwater pollution.The pesticide deltamethrin should be used rationally.