【摘要】 本文通过大量的分析对比明河灌区两含土与黄胶土的污水污灌土地处理系统认为：土壤对污水中的ＳＳ、ＣＯＤ、ＣＮ￣－及酚有着较强的过滤作用和净化能力；同时提高了土壤一的有机质、Ｎ、Ｐ和Ｋ，亦改善了土壤的结构。而另一方面，灌区污水中又含有较不浓度的Ｃｒ、Ｍｎ，Ｈｇ和Ａｓ，造成重金属的严重污染现象。由于灌区水质及水分运移的特殊性，引起了Ｃｒ、Ｍｎ、Ｈｇ、Ａｓ的剖面分异的特殊规律，本文特提出了合理土壤污灌王为２２５ｍ￣３／ｈｍ￣２．以及因地因时制宜的交叉混灌法，这对缓解根际层的重金属污染和保护地下水环境有着积极作用。更多还原

【Abstract】 With many analyses in this paper,contrasting land treatnent system of two-mixed soil with Land treatment system of Yellow-clay soil in Minhe Irrigation Area,I thinkthat soil has the ability of filter and purification to SS,COD,CN￣-,C₆H₅OH in water,in-creasing organic matter,N,P and K elements in soil and improvinrrM soil structure。On the otherer hand,wastewater in the irrigation area conains high concentrafion of Cr,Mn and As,Leading to serious pollution of heavy metal ions in the irrigation soil.Because of special rulesof water quality and water movement in the area, rational sewage irrigations norm of soil,225m￣3/hm￣2,and cross-mixed irrigation are brought out in the artical,which have activefunction of mitigating heavey metal pollution and protecting wdergtound water environment.更多还原