通过平衡振荡法测定了乙草胺在四种土壤中的吸附等温线,从影响因素、能量变化等方面研究了乙草胺在4种土壤中的吸附。结果表明:乙草胺易于被各种土壤吸附,土壤的吸附规律能够较好的符合Freundlich方程,拟合方程均有良好的线性关系。微生物的作用并没有显著改变乙草胺的吸附规律,乙草胺的吸附受到土壤有机质和矿物组成的显著影响。 Adsorption isotherms of acetochlor in four soils were determined by the equilibrium oscillation method. The adsorption of acetochlor in the four soils was studied from the aspects of influencing factors and energy changes. The results showed that acetochlor was easily adsorbed by all kinds of soils, and the adsorption laws of soil were in good agreement with Freundlich equation and the fitting equation had a good linear relationship. The action of microorganisms did not significantly change the adsorption law of acetochlor. Acetochlor adsorption was significantly affected by soil organic matter and mineral composition.