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Chromium(VI) Reduction in Wheat Rhizosphere

作  者:
Chen NengChang;Susumu Kanazawa;T. Horiguch
单  位:
ENGCHANG,
关键词:
rhizosphere;cr;application;nh4;2so4;toxicit
摘  要:
Reduction of Cr(VI) to Cr(III) were studied in fresh wheatrhizosphere soil (Kuroboku, high humic andosol) pretreated with abasal fertilizer consisting of (NG_4)_2SO_4, P_2O_5 and KH_2PO_4 andwith K_2Cr_2O_7 by using a rhizobox system. It was found thatrhizosphere exerted a positive effect on Cr(VI) reduction. Part ofthe reason was the decrease of pH in the rhizosphere due toapplication of (NH_4)_2SO_4, implying that application ofphysiologically acid fertilizers would reduce Cr(VI) toxicity toplants.

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