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研究了除草剂丁草胺在氙灯、高压汞灯光照下的光解动态．结果表明，丁草胺在氙灯光照作用下，其光解速率为纯水＞河水＞塘水＞稻田水；丁草胺在氙灯光源下的光解速度比高压汞灯下低；其光解率与浓度（剂量）呈反相关；充Ｎ２脱Ｏ２使丁草胺的光解速度减缓．
The photolysis dynamics of herbicide butachlor in xenon lamp and high-pressure mercury lamp was studied. The results showed that under photoperiod of xenon lamp, the photodegradation rate of butachlor was pure water> river water> pond water> paddy water. The photolysis rate of butachlor under xenon lamp was lower than that under high pressure mercury lamp. The photodegradation rate And the concentration (dose) was inversely correlated; filling N2 deoxy to slow butachlor photolysis rate.