The danger and current situation of the soil polluted by oil were summed up and main biological principle of oil-polluted soil and the research progress in recovery technique were introduced.

概述了土壤石油污染的危害及其现状，介绍了主要的石油污染土壤生物修复技术的原理及研究进展。

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The paper intends to investigate the combined effects of microorganism and plant on the remediation of soil polluted by thick oil, and to provide practical methods for the remediation.

目的研究微生物-植物联合对稠油污染土壤的修复效果，为石油污染土壤生物修复技术的应用提供依据。

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At the end of this paper, the measures of harnessing land pollution, such as petroleum reclamation on oil pit, polluted soil burn and changing soil reclamation, etc. are proposed.

最后，对落地油土地污染治理方面，提出油坑原油回收、污染土层燃烧处理和换土复垦等措施。

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