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首页> 外文期刊>Journal of Residuals Science & Technology >Zn deficiency promotes Cd accumulation by lettuce from biosolids amended soils with high Cd : Zn ratio
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Zn deficiency promotes Cd accumulation by lettuce from biosolids amended soils with high Cd : Zn ratio

机译：锌缺乏会通过莴苣从高Cd：Zn比的生物固体改良土壤中生菜来促进Cd积累

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摘要

Before regulations for biosolids utilization were developed, some highly contaminated sewage sludges were land applied on farmers fields. In one case, with a soil which had been amended with a high Cd:Zn ratio sludge, making the soil calcareous did not reduce Cd uptake by lettuce as raising pH had achieved in many earlier tests. We conducted an experiment to examine metal uptake by lettuce with different treatments (2% limestone, Zn, peat, or 10% addition of a biosolids compost enriched in Fe, Mn and/or Zn) would reduce the potential for Cd uptake by Romaine lettuce from soils which had been amended with high Cd biosolids in the 1960s-1970s.
机译：在制定生物固体利用法规之前，将一些高度污染的污水污泥施用于农民田地。在一种情况下，使用改良的Cd：Zn比高的污泥改良土壤，使钙质土壤不会降低莴苣对Cd的吸收，因为许多早期试验已经实现了提高pH的目的。我们进行了一项实验，研究了用不同处理方法（2％的石灰石，锌，泥炭或添加10％的富含Fe，Mn和/或Zn的生物固体堆肥）添加的莴苣对金属的吸收，这将减少长叶莴苣吸收Cd的可能性从1960年代至1970年代用高Cd生物固体进行了改良的土壤中。

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