Notice of RetractionUrease activity changes of sewage river sediment by different phytoremediation methods

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

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Pot experiment was conducted to study phytoremediation efficiency of maize, ryegrass, Indian mustard and Medico go sativa L for heavy metal-organic contaminated sewage river sediment. Three different treatment levels were designed, and urease activity change in sediment was inspected. Results showed that the method of EDTA-induced phytoremediation can promote the absorption of heavy metal by plant and restoring urease activity evidently. The phytoremediation method of plant-mycorrhizal fungi-native bacteria can alleviate the hazards of heavy metals pollutants on plants, and improve the ability of plants to resist adverse environment. Soil unease activity of four kinds of heavy metal enrichment plants is Ryegrass>maize>Indian mustard>Medico go sativa L. Low temperature influenced urease activity greatly.