污染农田土壤的治理技术研究概述

概述了由于农时操作过程中用污水灌溉、不合理施用化学肥料、化学农药，以及矿区排污等途径造成农田土壤遭受重金属、放射性物质、硝酸盐以及有机氯残留等污染。通过种植超积累植物（包括农作物的某些品种及某些野生植物）或者通过有益微生物处理土壤、拌种等、采用有机酸、石灰等化学物质和多种有机物质等不同途径，对污染的土壤进行治理，均可收到良好的净化改良效果。同时分析了植物修复的应用前景以及保证效果的调控原则，并强调综合技术合理搭配应用收效会更好。

Summary of Studying Reform Technology to Polluted Farmland

This article summarized that the farmland are polluted by heavy metal, radioactive matter, nitrate and organic chlorines etc because of sewage irrigation, unreasonably using chemical fertilizer and pesticide, and diggings pollution. There are different approaches reforming polluted farmland, for example planting super accumulator (occluding some crop cultivars and wilding), using availability microbe to manage land and mix seed, using chemistry matter such as organic acid and lime, and using organic matter. These approaches have well effects to purify and improve the polluted farmland. At the same time author analyses the applying foreground of plant repairing and regulating principle of assuring effects, emphasizes the effect will even more good if synthesis technology was reasonably arranged in pairs.