A field experiment was conducted using Brassica campestris ssp.pekinensis to assess effect of fertilization on migration and accumulation of Cr,Cu and Ni in the soil-brassica cropping system.Heavy metal absorption capacity of brassica varied with the fertilization treatment showing a decreasing order of organic fertilizer>compound fertilizer>urea.Acumulation of Cu,Cr did with the part of the plant,displaying an order of root>roof>stem.Migration of these heavy metals from soil to brassica demonstrated an order of Cu>Ni > Cr,and effect of fertilization reducing content of available heavy metals in the soil did with the fertilization treatment,revealing an order of organic fertilizer>compound fertilizer>urea.%采用田间试验,研究了在不同施肥条件下重金属在土壤-作物系统中迁移、积累的特性.结果表明,不同施肥处理对降低植物重金属吸收的影响能力大小依次为有机肥＞复合肥＞尿素,一般地,作物不同部位对Cr、Cu 积累量的大小顺序为根＞叶＞茎,重金属在土壤-作物系统中迁移能力大小依次为Cu＞ Ni＞Cr,3种施肥处理对降低土壤中有效态重金属含量的影响能力大小依次为有机肥＞复合肥＞尿素.
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