The bioassay methods was used to study the adsorption of acetochlor in three different soils in Hainan Province.It was found that adsorption isotherms could fit Freundlich equation well and the adsorption behaviors of acetochlor in soils were well described by the linear sorption equation within the range of concentrations used in experiments.The correlation Kd of the refuse dump soil,vegetable farm soil,pool soil were 3.887,2.983 3,2.061 3 and were the physical adsorption.The adsorption of acetochlor was h...