The addition of exogenous HAs can enhance the adsorption of butachlor, accelerate the biodegradation process of butachlor, and affect the biodegradation products in the meantime.

• 腐殖酸的加入不仅能吸附丁草胺还能促进细菌对丁草胺的微生物降解；并能影响丁草胺的微生物降解产物.