Effects of Intercropping with Three Ornamentals on Lead Accumulations of Trifolium repens

ZHU Hongxia; JIA Yanlei; JING Huayu; ZHANG Jiayang

doi:10.13870/j.cnki.stbcxb.2018.01.046

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Effects of Intercropping with Three Ornamentals on Lead Accumulations of Trifolium repens

更新时间：2025-03-12

- Effects of Intercropping with Three Ornamentals on Lead Accumulations of Trifolium repens
- Vol. 32, Issue 1, Pages: 291-296(2018)
- 作者机构：
  
  新乡学院生命科学技术学院,河南,新乡,453003
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2018.01.046
  CLC： X171.5
- Published：2018
- 稿件说明：
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ZHU Hongxia, JIA Yanlei, JING Huayu, et al. Effects of Intercropping with Three Ornamentals on Lead Accumulations of Trifolium repens[J]. 2018, 32(1): 291-296.
DOI：

ZHU Hongxia, JIA Yanlei, JING Huayu, et al. Effects of Intercropping with Three Ornamentals on Lead Accumulations of Trifolium repens[J]. 2018, 32(1): 291-296. DOI： 10.13870/j.cnki.stbcxb.2018.01.046.

摘要

为了研究铅污染条件下对白三叶植物修复效率的影响，通过盆栽和小区试验，将一串红、翠菊、德国鸢尾分别与白三叶混种，研究不同混种方式对白三叶生物量及铅积累的影响。结果表明：与白三叶单种相比，混种德国鸢尾提高了白三叶单株地上部分生物量和整株生物量，混种一串红、翠菊则降低了白三叶单株地上部分生物量和整株生物量；就混种系统而言，各个混种处理的植物总生物量均介于混种的2种植物单种之间。混种一串红、翠菊、德国鸢尾均提高了白三叶地上部分铅含量，盆栽试验分别较白三叶单种提高了11.39%，17.88%，42.18%；小区试验分别较白三叶单种提高了2.64%，13.22%，23.94%。白三叶混种德国鸢尾的地上部分铅积累总量高于各自单种，其余混种处理均介于混种的2种植物单种之间。小区试验中，白三叶混种德国鸢尾的单位面积地上部分铅积累总量最高，达242.777 mg/m2，较白三叶单种提高了371.83%，较德国鸢尾单种提高了8.38%；白三叶混种德国鸢尾的土壤重金属铅去除率最高，达15.11%，比白三叶单种提高了326.84%，比德国鸢尾单种提高了10.70%。因此，白三叶混种德国鸢尾的铅提取效果表现最好，能够用于铅污染土壤的修复。

Abstract

The pot and plot experiments were conducted to study the effects of intercropping on the remediation efficiency of Trifolium?repens plant under lead (Pd) contamination. Salvia splendens

Callistephus Chinensis and Iris germanica L. were intercropped with Trifolium?repens respectively to study the influences of different intercropping combinations on the growth of Trifolium?repens and Pd accumulation. The results showed that intercropping with Iris germanica L. improved the shoot biomass and the whole plant biomass of Trifolium?repens

but intercropping with Salvia splendens and Callistephus Chinensis reduced the shoot biomass and whole plant biomass compared with monoculture of repens. In the intercropping system

the total biomass of plants always fell in between the monoculture of two species. By intercropping with Salvia splendens

Callistephus Chinensis and Iris germanica L.

all the Pd contents in shoots of Trifolium?repens increased

by 11.39%

17.88% and 42.18% respectively compared with Trifolium?repens monoculture in pot experiment

and by 2.64%

13.22% and 23.94% respectively in plot experiment. The total Pd accumulation in shoot of Trifolium?repens and Iris germanica L. intercropping system was higher than the monoculture of the two species respectively

and the other intercropping treatments were between the monoculture of the two species. In plot experiment the total Pd accumulation in shoots per unit area in Trifolium?repens and Iris germanica L. intercropping system was highest of all intercropping?patterns

which reached up to 242.777 mg/m2

improved by 371.83% and 8.38% respectively compared with the monoculture. The?removal?rates?of Pb in soil of Trifolium?repens and Iris germanica L. intercropping system were the highest of all intercropping?patterns

which reached up to 15.11%

improved by 326.84% and 10.70% respectively compared with the monoculture. Therefore

in terms of the whole restoration efficiency

the Trifolium?repens intercropping with Iris germanica L. performed the best，which could be used to enhance the remediation effect of Pd contaminated soil.

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