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《Environmental Science & Technology》 2012-12
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Effects of Kinds of Iron Fertilizer and Fertilization Patterns on Cd Accumulation in Indian Mustard

NIE Yan-qiu1,LI Yu-xiu1,LIU An-hui2,HE Hui1, ZHOU Wen-jing1,PANG Zhao-hui1,PENG Hui-bing1(1.Department of Safety and Environmental Engineering,Hunan Institute of Technology,Hengyang 421002,China; 2.Hunan Anbang A-mop Chain Co.Ltd,Hengyang 421001,China)  
Effects of three kinds of iron fertilizer including FeSO4,Fe2(SO4)3 and EDTA·Na2Fe,and two fertilization patterns such as base and dress,were studied on cadmium accumulation in Indian mustard(Brassica juncea) through pot experiment with actual Cd polluted soil(Cd content 0.08~1.89 mg/kg).Results showed that Indian mustard biomass is very close to the control at application of Fe2(SO4)3,but are much higher than the control at the use of FeSO4 and EDTA·Na2Fe.The shoot Cd concentration in Indian mustard resulted from base fertilization of EDTA·Na2Fe is 76%~85% lower than the control,and is lowest in all treatments.Shoot Cd concentration,shoot Cd uptake of Indian mustard and Cd removal rate of soil resulted from dress fertilization of Fe2(SO4)3 are 48%~236%,52%~63% and 110%~260% higher than the control,and are highest in all treatments respectively.It suggested that base fertilization of EDTA·Na2Fe may be used to better quality of edible foliar vegetable,and dress fertilization of Fe2(SO4)3 may be used to enhance phytoremediation of Cd polluted soil with Indian mustard.The research would provide reference for the production of iron-base composite fertilizer as well as its application in the remediation of Cd polluted soil and production of pollution-free agriculture products.
【Fund】: 湖南省自然科学衡阳联合基金资助(10JJ9020);; 湖南省自然科学基金(09JJ6066)
【CateGory Index】: S637
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