1 前言缓释剂是近几年来随控制释放技术发展出现的加工品,是用物理或化学方法,使农药贮存于农药加工品中,使用时能缓慢的释放出来。这种制剂可减少农药对环境的污染,减少残毒,延长残效,使高毒农药低毒化。我们确定以地下害虫为防治对象,筛选出以腐植酸为载体,以甲胺磷为试药的缓释剂。 1 Introduction Slow release agent is a processed product that appears with the development of controlled release technology in recent years. It uses physical or chemical methods to store pesticides in pesticide processed products and release them slowly when in use. This preparation can reduce the pollution of pesticides to the environment, reduce residues, prolong the residuals, and make the poisonous pesticides with low toxicity. We determined to underground pests as the control object, screening out humic acid as a carrier to methamidophos as a test drug release agent.