重金属富集植物车前草对镍的响应
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S158.3 X53

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贵州省自然科学基金[(2002)3041]资助


Growth and Uptake Response to Ni by Hyperaccumulator Plantain
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    摘要:

    不同肥力土壤上重金属镍对车前草生长及生物量的影响研究表明:车前草对重金属镍有忍耐作用,土壤中镍含量达到近150mg/kg时,车前草仍然能正常生长,生物量并未显著下降;车前草在镍污染处理水平相同条件下,生物量与土壤中氮的含量呈正相关(P<0.01);车前草地上部干重与土壤中含镍浓度呈负相关(P<0.01);车前草根系含镍浓度与土壤中含镍浓度呈正相关(P<0.01)。土壤肥力较低时,车前草对土壤镍的富集率较高(6.17%)。车前草适合镍中等污染土壤的修复。

    Abstract:

    Effect of Ni content in different fertility soils on the growth and biomass of plantain was conduced. The results showed that plantain has some extent tolerance to Ni, when Ni content in soils was reached 150 mg/kg the growth of Plantain was not significantly influenced by heavy metal toxicity. There was positive relationship between biomass and N contents (P<0.01). Ni content in plantain root increased as the levels of soil Ni contents (P<0.01), while shoot dry weight decreased (P<0.01). There is a higher accumulation rate of Ni by plantain from soil (6.17%), especially in the poor fertility soil. Therefore, plantain is a good phytoremediation plant in medium contamination soils by Ni.

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陆引罡 黄建国 滕应 罗永水.重金属富集植物车前草对镍的响应[J].水土保持学报,2004,(1):108~110,114

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