摘要： 针对叶菜类蔬菜容易积累重金属引起重金属含量超标，在温室采用土培试验对代表叶菜类蔬菜的菠菜吸收累积重金属铜、锌、铅和镉的特征以及调控措施进行了研究。试验结果表明，随着土壤重金属Cu、Zn、Pb和Cd含量的增加，菠菜地上部Cu、Zn、Pb和Cd的含量均明显增加。随着菠菜的生长，地上部重金属的含量有明显增加的趋势。在土壤加入重金属处理条件下，土壤中也只有很小部分的重金属能被菠菜的根系吸收，Cu和Pb元素被菠菜吸收后大部分累积在菠菜的根系中。Zn元素被菠菜根吸收后，一半以上向茎叶中迁移。Cd元素被菠菜根吸收后，有将近一半能向茎叶中迁移，一半滞留在根系中。施入石灰处理均显著降低了菠菜地上部的Zn吸收量和Zn含量。与对照相比，施入石灰菠菜地上部Zn吸收量和Zn含量分别降低42.50%和33.35%。

关键词: 菠菜, 重金属, 吸收, 特征, 调控措施

Abstract: Leafy vegetables easily accumulating heavy metal to exceeded standard amount． Soil culture experiments were performed to study the control measures and characteristics of heavy metals copper， zinc， lead and cadmium uptake and accumulation in spinach． The results showed that spinach shoot Cu， Zn， Pb and Cd concentrationswere significantly increased with the increasing concentration of heavy metals． With the extension of spinach growingperiod， shoot concentrations of heavy metals increased distinctly． Only a small fraction of heavy metals in the soilcould be absorbed by the root of spinach． Cu， Pb element were mainly accumulated in spinach roots， little could bemigrated to the stems and leaves． Zn element was absorbed by spinach root， more than half can be migrated to stem．Cd was absorbed by spinach root， and nearly half could be migrated to the stems and leaves， the half could be remained in the roots． Compared with the control， application of lime reduced Zn concentration and Zn uptake in spinach shoot respectively．

Key words: Spinach, Heavy metal, Uptake, Characteristics, Control measures

中图分类号: 

• S636.1