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在黄土性母质上发育的壤质棕壤农田上，长期施用双氯化肥氯磷铵和氯化钾，使土壤中０～２０ｃｍ土层中含氯量达４１．０ｍｇｋｇ－１，此时对土壤中过氧化氢酶、转化酶、脲酶的活性略有所降低，施用单氯化肥氯化钾，使土壤０～２０ｃｍ土层中含氯量为３３．０ｍｇｋｇ－１，略高于对照，此时，土壤中过氧化氢酶、转化酶、脲酶活性与对照相比，无明显差异；施用双氯或单氯肥料后，与对照相比，土壤中酸性磷酸酯酶活性无明显差异。通过对土壤中酶活性的测定，为长期施用含氯肥料提供一些理论依据．
On the loamy brown soil farmland developed on loess parent material, long-term application of chlorinated ammonium chloride and potassium chloride chloride, so that 0 to 20cm soil in the soil chlorine content of 41.0mgkg-1, at this time on the soil In the activity of catalase, invertase and urease slightly decreased, the application of monochloride potassium chloride, soil 0 ~ 20cm soil chlorine content of 33.0mgkg-1, slightly higher than the control, this time There was no significant difference in the activity of catalase, invertase and urease in the soil when compared with the control. Compared with the control, the activity of acid phosphatase in the soil showed no significant difference after the application of the dual chlorine or the single chlorine fertilizer. Through the determination of enzyme activity in the soil, provide some theoretical basis for the long-term application of chlorine-containing fertilizer.