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《ACTA AGRICUL TURAE SHANGHAI》 1995-01
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MORPHOLOGY AND AVAILABILITY OF NICKEL IN CALCIC CONCRETION BLACK SOILS

Ding Weixin (Institute of Soil Science, Academia Sinica, Nanjing 210008, China. )  
The paper deals with the distribution, total and available contents of nickel incalcic concretion black soils and the influence of cultivation aging and transformation of cropping system on distribution of nickel in soil fractions. The total Ni content in calcic concretion black soils was high, with an average of 46. 06 μg· g(-1), but available Ni content extracted with 0. 005 mol/L DTPA (pH 7. 0) was low (about 0. 56μg· g(-1), which only accounted for 1. 65% of the total Ni in calcic concretion black soils. The contents of Ni in soilfractions followed the descending order: residual Nicrystalline iron oxides bound Niorganically bound Niamorphous iron oxides bound Ni manganese oxides bound Niexchangeable Nicarbonate bound Ni. In the total soil Ni, 83. 13% of which existed in residual fraction and crystalline iron oxides fraction, being unavailable to plants, and only 1. 65%of which existed in exchangeable fraction and bound by manganese oxides being comparatively available and more easily absorbed by plants. The transformation of cropping system benefited the activation of soil nickel, but the effect of cultivation aging was poor.
【Fund】: 国家“八五”攻关研究课题
【CateGory Index】: S158.1
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【References】
Chinese Journal Full-text Database 2 Hits
1 ZHANG XIU-ling~(1,2), SONG Guang-yu~1(1.College of Resource and Environmental Sciences, Southwest Agricultural University, Chongqing400716,China;2.College of Agriculture, Guangxi University, Nanning 530005,China);The nickel nutriments of Plant[J];Soils and Fertilizers;2004-06
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1 YANG Guoyi, LUO Wei, ZHANG Tianbin, WAN Hongfu, GAO Yuanxue Guangdong Institute of Ecology and Environmental and Soil Sciences//Guangdong Key Laboratory of Agro-Environment Integrated Control, Guangzhou 510650, China;The distribution of Ni contents in agricultural soils in the Pearl River Delta, China[J];Ecology and Environment;2007-03
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