不同化肥对水稻土中Cu吸附行为的影响

doi:CNKI:SUN:NCST.0.2011-01-007

Journal of Ecology and Rural Environment ›› 2011, Vol. 27 ›› Issue (1): 29-33.doi: CNKI:SUN:NCST.0.2011-01-007

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Effects of Fertilizers on Cu Adsorption in Paddy Soil

HUANG Xiao-Wu, LIU Jie, ZHANG Xue-Hong, KONG Shu-Qiong, ZHU Yi-Nian

The Guangxi Key Laboratory of Environmental Engineering,Protection and Assessment,Guilin University of Technology

Received:2010-11-02 Online:2011-01-25 Published:2011-05-27
Contact: LIU Jie The Guangxi Key Laboratory of Environmental Engineering,Protection and Assessment,Guilin University of Technology E-mail:liujie@berkelay.edu

Abstract

Abstract: Six types of fertilizers,i.e.Ca(NO3)2,NH4Cl,NH4NO3,CO(NH2)2,KH2PO4 and KCl,were used in an isothermal adsorption experiment to study effects of fertilizers on Cu adsorption behaviors in soil.Results show that application of CO(NH2)2 increased adsorption ratio and distribution coefficient of Cu,but the application of NH4NO3,KCl,NH4Cl or Ca(NO3)2 demonstrated an obviously reverse effect;the effect of KH2PO4 was related to Cu concentration.Cu adsorption potential E0 varied with fertilizer treatments,following an order of CO(NH2)2 >CK(control groups)>NH4NO3 >Ca(NO3)2 >KCl>NH4Cl>KH2PO4.The effects of the six types of fertilizers on Cu adsorption behaviors followed the order of KH2PO4 >CO(NH2)2 >CK>NH4NO3 >KCl>NH4Cl>Ca(NO3)2.Because of the different effects of the fertilizers on Cu adsorption,reasonable choice should be made as to what type of fertilizer is to be used during crop cultivation season in the soil high in Cu content in order to avoid Cu mobilization transformation and decrease its bio-availability.

Key words: fertilizer, paddy soil, heavy metal, Cu, adsorption

CLC Number:

S143

HUANG Xiao-Wu, LIU Jie, ZHANG Xue-Hong, KONG Shu-Qiong, ZHU Yi-Nian. Effects of Fertilizers on Cu Adsorption in Paddy Soil[J]. Journal of Ecology and Rural Environment, 2011, 27(1): 29-33.

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Effects of Fertilizers on Cu Adsorption in Paddy Soil

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