鞍山市城郊污灌区农地污染状况分析与评价

土壤是人类赖以生存的自然资源，它能把大量有机物最终分解为二氧化碳和水，以及各种土壤基肥的其他组成部分，但当施入的废弃物超过土壤的自净力时，就会破坏土壤的正常机能，使之失去自然生态平衡，从而严重影响农作物的产量和品质。文章主要就鞍山市城郊污灌区的农地重金属与农药污染状况作出分析与评价，并利用趋势面分析的方法得出污染的源地，以期为鞍山市污灌区的环境整治工作提供借鉴。

Analysis and Evaluation of Pollution Status of Sewage Farming in the Suburb of Anshan

As a natural resource on which human beings depend for existence, soil can eventually resolve organic matters into carbon dioxide and water as well as various components of basic fertilizer. However, this normal function of soil would fail and natural ecological balance would lose if excessive wastes are applied which is beyond the self - purification ability of soil. As a re- suit, the yield and quality of the crops would be seriously affected. This article makes an analysis and evaluation of heavy metal and pesticide contamination status of sewage farming areas in the suburb of Anshan, and use the trend surface analysis method to find out the pollution source, with a view to provide as a reference for the improvement of environment in sewage irrigation areas of Anshan.