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研究长期利用城市污水浇灌的农田土壤——植物系统中污染物的含量及其行为与归宿，不仅对农田生态系统的环境质量控制有重要意义［１］，同时，还可以为合理发展污灌，实现污水资源化，促进农业生产的持续发展提供科学依据［２］。本文调查了华北白洋淀地区典型污灌农田土壤中污染物含量及其在土壤——植物系统中分布和累积状况。结果表明，污灌区土壤中某些重金属含量有一定的累积趋势。目前，这些重金属对农田作物无明显危害，大部分累积在根部。加强科学管理和污灌指导，利用农田作为土地处理系统来消纳污水中耗氧有机物，是本地区近期可行的污水资源化途径之一。
Studying the content, behavior and fate of pollutants in farmland soil-plant system, which is irrigated by urban sewage for a long time, is not only significant for the control of farmland ecosystem quality [1], but also for the rational development of sewage irrigation, To achieve the sewage resources, and promote the sustainable development of agricultural production to provide a scientific basis [2]. This paper investigated the pollutant content of soils in the typical sewage irrigation farmland in Baiyangdian, North China and their distribution and accumulation in the soil-plant system. The results showed that some heavy metals in sewage irrigation area had a certain trend of accumulation. At present, these heavy metals have no obvious harm to farm crops, most of which accumulate in the roots. Strengthening scientific management and sewage irrigation guidance, using farmland as a land treatment system to consume oxygen-consuming organic matter in wastewater is one of the viable approaches to reclaim wastewater in this region.