中文摘要：

以吉林省长春地区的农安县为研究区域，采用单项污染指数法、单因子和多因子综合污染指数法及SPSS技术，全面评价了县域内耕地土壤重金属的污染状况．结果显示，农安县土壤环境质量总体良好．Pb、As、Cd、Cr的单项污染指数、单因子指数和多因子综合指数均达到NY／P391—2000标准．Hg单项污染指数有107个样点符合NY／P391—2000标准，157个符合GB／T18407—2001标准，5个不合格；Hg多因子综合污染指数有103个样点符合NY／P391—2000标准的安全、清洁水平，157个样点符合GB／T18407—2001标准的安全、清洁水平，5个样点处于警戒级、尚清洁水平；Hg单因子污染指数有7个乡镇达到NY／P391—2000标准，15个乡镇仅达到GB／T18407—2001标准．

英文摘要：

Taking farmland soils in Nong＇an County as study area,this paper evaluated roundly the heavy metal contamination in farmland soils adopting single pollution indexes, single-factor composite indexes,multi-factor integrated indexes and SPSS technology. The conclusions showed that the quality of the most soil environment was good in Nong＇an County. The single pollution indexes,single-factor composite indexes and multi-factor integrated indexes of Pb, As, Cd, Cr all reached NY/P391-2000 standard. As for Hg,the single index was that 107 samples met NY/P391-2000 standard, 157 samples met GB/T18407 2001 standard and 5 samples failed; the multi-factor integrated index was that 103 samples met NY/P391-2000,in the safe and clean level, 157 samples met GB/T18407-2001 ,in the safe and clean level,and 5 samples failed,in the alert level but still clean the single-factor composite index was that 7 townships met NY/P391 2000 standard and 15 townships only met GB/T18407-2001 standard.