中文摘要：

采用短期室内中水土柱模拟灌溉和长期中水灌溉区大田定位试验,研究中水灌溉后植物体内元素含量变化。结果表明,中水灌溉下全氮含量明显增大,全磷和全钾也有增大趋势;全钠、氯离子和硼含量因植物种类的不同而异,与对照差异显著（P〈0.05）;重金属Cu、Zn、Pb、Cd含量在中水灌溉后大多数植物都有相对增加的趋势,与清水对照差异显著（P〈0.05）。可见,中水灌溉引起植物体内矿质元素含量的变化。

英文摘要：

The indoor soil column simulation experiment irrigated by reclaimed water for short-term,and the field experiment irrigated by reclaimed water for long-term were used to investigated,the leaf element content changes in different plants.The results showed that total nitrogen content increased obviously,total Phosphorus and total Potassiums had a increasing trend under reclaimed water irrigation;Sodiums,Chloride ions and Boron contents were increased or decreased in different species of plants,and had significant difference with CK（P0.05）.The contents of heavy metals such as Cu,Zn,Pb,Cd had a relative increasing trend after reclaimed water irrigation,and also showed significant difference with CK（P0.05）.So,reclaimed water irrigation will change the content of mineral elements in plants.