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对污水灌溉区的灌溉用水、土壤及蔬菜中有害物质含量进行调查。结果表明：被测定灌溉用水符合国家卫生标准，且尚未对土壤及蔬菜造成危害，但污水泥溉区的污水、土壤及蔬菜中铜、铅含量显著高于对照区（Ｐ＜０．０５），污水中“三氮”及阴离子合成洗涤剂显著高于清洁水（Ｐ＜０．０１），蔬菜中亚硝酸盐含量高于对照区蔬菜（Ｐ＜０．０１）
The sewage irrigation area of irrigation water, soil and vegetables to investigate the content of harmful substances. The results showed that the tested irrigation water conforms to the national sanitary standards and has not caused harm to the soil and vegetables. However, the contents of copper and lead in the sewage, soil and vegetables in the sewage irrigation area are significantly higher than those in the control area (P <0.05) The “three nitrogen” and anionic synthetic detergents in sewage were significantly higher than that of clean water (P <0.01), and the content of nitrite in vegetables was higher than that of vegetables in the control area (P <0.01)