加拿大在高密度种植地区附近的水域中检测到高浓度的吡虫啉。考虑到新烟碱类杀虫剂吡虫啉对水生昆虫的风险,加拿大有害生物管理局(PMRA)建议在未来3~5年内逐步淘汰吡虫啉的大部分用途。目前该议案正在向公众进行为期90 d的公开评议以完成最终的决定,拜耳对此进行申辩。拜耳一直确信按照产品标签上的说明合理使用吡虫啉不会对水生昆虫造成危害,并且表示 High concentrations of imidacloprid were detected in Canada’s waters near high-density areas. Considering the risks to aquatic insects of the neonicotinoid insecticide imidacloprid, the Canadian Pest Management Council (PMRA) proposes to phase out most of the use of imidacloprid in the next three to five years. At present, the bill is being publicly publicized for 90 days to complete the final decision. Bayer defended it. Bayer has always believed that the rational use of imidacloprid does not pose a hazard to aquatic insects, as indicated on the product label, and represents