农田土壤氟磺胺草醚残留特征、生态风险与消减研究进展

Research progress on residual characteristics,ecological risk,and abatement of fomesafen in farmland soil

氟磺胺草醚是一种长残效二苯醚类除草剂,主要用于花生和大豆田中1年和多年生阔叶杂草的防治。随着农业生产机械化程度逐渐提高,我国氟磺胺草醚的使用量不断增加。长期的大量施用导致土壤中存在明显的残留,由此引发的生态环境问题亟需引起农业及环保部门的关注和重视。本文系统综述了近年来农田土壤中氟磺胺草醚的残留特征、生态毒理效应和消减过程等方面的研究进展,并从残留形成机制、安全施用限量标准和消减机制与技术等方面提出一些思考和展望,以期为解决氟磺胺草醚的残留药害问题提供新的见解和思路。

Fomesafen,a long residual diphenyl ether herbicide,is widely used for control of annual and perennial broadleaf weeds in peanut and soybean fields.With the development of agricultural production mechanization in China,the application of fomesafen has been rising.Long-term and large-scale application leads to obvious residues in the soil.As a consequence,the resulting ecological and environmental problems need urgent attention from the agricultural and environmental protection departments.We systematically reviewed the research progress about the residual characteristics,ecotoxicological effects and abatement process of fomesafen in farmland soil,and proposed some prospects from the residual formation mechanisms,safe application limit standard,abatement mechanism and technology,aiming to provide some new insights and ideas for solving the problem of residual injury of fomesafen.