铅锌尾矿区优势草本植物体内铅及氮、磷、钾含量变化特征

草业学报 ›› 2012, Vol. 21 ›› Issue (1): 162-169.

铅锌尾矿区优势草本植物体内铅及氮、磷、钾含量变化特征

张树金,李廷轩^*,邹同静,熊剑

四川农业大学资源与环境学院,四川成都 611130

出版日期:2012-02-20 发布日期:2012-02-20
通讯作者: E-mail:litinx@263.net
作者简介:张树金(1986-),男,四川宜宾人,在读硕士。
基金资助:
国家自然科学基金(40901138),国家科技支撑计划子课题(2008BAD98B03)和四川省科技厅应用基础项目(2008JY0022)资助。

Variability of nitrogen, phosphorus, potassium and lead concentration of nine predominant herbaceous plant species in a lead-zinc mining tailing

ZHANG Shu-jin, LI Ting-xuan, ZOU Tong-jing, XIONG Jian

College of Resource and Environment, Sichuan Agricultural University, Chengdu 611130, China

Online:2012-02-20 Published:2012-02-20

摘要/Abstract

摘要： 通过对铅锌尾矿区9种优势草本植物不同生长时期铅及氮、磷、钾含量分布特征及其相关性研究,结果表明,1)植物地上部氮、磷、钾含量均高于地下部,并随着生长时期的延长呈下降趋势; 2)在3个生长时期,9种优势草本植物均未表现出超富集铅的能力,但华中蹄盖蕨地下部能够囤积大量铅,最高含量和累积量分别达到15 542.1 mg/kg和41.81 mg/株; 3)除生长后期植物地上部氮、钾含量与铅含量存在显著的正相关关系(0.750^*和0.773^*)外,植物氮、磷、钾含量与铅含量在3个生长时期均未表现出显著的相关关系; 4)在植物生长前期,其地上部铅含量与地下部铅含量以及与生长旺盛期和生长后期的地上部或地下部铅含量均不存在显著的相关关系,而在生长旺盛期和生长后期,同一时期地上部和地下部铅含量之间以及不同时期地上部与地下部铅含量之间均存在显著或极显著的相关关系。

Abstract: The co-relationships between nitrogen, phosphorus, potassium, and lead concentrations of nine predominant herbaceous plant species in the Sanhe lead-zinc mining tailings were studied and the distribution characteristics within the growth period were explored. 1) The concentrations of nitrogen, phosphorus and potassium in shoots of plants were higher than in roots and they all decreased with the extension of the growth stages. 2) None of the plant species accumulated lead above 1 000 mg/kg (criteria for hyperaccumulator of lead) in the shoots. However, the roots of Athyrium wardii can uptake a great deal of lead, and the maximum concentration and accumulation concentration were 15 542.1 mg/kg and 41.81 mg/plant, respectively. 3) In addition to the later growth, the shoot concentrations of nitrogen and potassium with lead of the nine predominant herbaceous plants in mining tailings showed significant positive correlations (0.750^* and 0.773^* respectively) but there were no significant correlations between the concentrations of nitrogen, phosphorus, potassium and lead. 4) The lead concentration of shoots in early growth stages had no significant relationship (P<0.05) with that of roots. However, in vigorous and late growth stages, the correlations between the lead concentrations of shoots and roots in the same, or in different growth stages were significant or highly significant (P<0.01) respectively.

中图分类号:

Q946.91

张树金,李廷轩,邹同静,熊剑 . 铅锌尾矿区优势草本植物体内铅及氮、磷、钾含量变化特征[J]. 草业学报, 2012, 21(1): 162-169.

ZHANG Shu-jin, LI Ting-xuan, ZOU Tong-jing, XIONG Jian. Variability of nitrogen, phosphorus, potassium and lead concentration of nine predominant herbaceous plant species in a lead-zinc mining tailing[J]. Acta Prataculturae Sinica, 2012, 21(1): 162-169.

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