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1研究背景中国一直在用地球上7%的农田养活全世界1/5的人口。近20余年以来,随着经济社会发展,高强度利用和人为干预下工农业生产过程中排放的有毒化学品在农田系统中逐渐残留、累积,导致了一系列农田土壤污染的重大环境问题,严重威胁了国家粮食安全、生态环境质量和人体健康。2014年4月国家环保部和国土资源部共同发布了《全国土壤污染状况调查公报》,2016年5月国务院又相继印发了《土壤污染防治行动计划》,备受关注的环保“土十条”正式出台,预示土壤污染防
1 Research Background China has been using 7% of the world’s farmland to feed one fifth of the world’s population. In the recent 20 years, with the economic and social development, high intensity utilization and human intervention, the toxic chemicals released during the process of industrial and agricultural production have gradually been accumulated and accumulated in the farmland system, leading to serious environmental problems of a series of farmland soil pollution. Threatened the national food security, ecological environment quality and human health. In April 2014, the Ministry of Environmental Protection and the Ministry of Land and Resources jointly released the “Bulletin on the Survey of Soil Pollution in China”. In May 2016, the State Council successively issued the “Action Plan for Soil Pollution Prevention and Control” and the “ ”Officially promulgated, indicating soil pollution prevention