四川环境2017，Vol.36Issue(2)：1-6,6.
混种黑麦草和三叶草对假繁缕镉积累的影响
Effects of Intercropping with Lolium Perenne and Trifolium Pretense on Cadmium Accumulations of Pseudostellaria Maximowicziana
摘要
Abstract
A pot experiment was conducted to study the effects of intercropping on the remediation efficiency of Pseudostellaria maximowicziana plant under Cd contamination.Lolium perenne and Trifolium pretense were intercropped with Pseudostellaria maximowicziana respectively to study the influence of different intercropping combinations on the growth of Pseudostellaria maximowicziana and Cd accumulation.The results showed that the growth of plants and Cd accumulation were promoted or inhibited in different combinations.The mixed cultivation of P.maximowicziana and T.pretense promoted the shoot biomass of P.maximowicziana by 20.39％ (P ＜0.05) and decreased that of T.pretense by 13.85％ (P ＜0.05) compared with that of the single species The Cd content on shoots of P.maximowicziana and T.pretense were increased by 10.70％ (P ＜ 0.05) and 17.32％ (P ＜0.05),respectively,compared with their respective single species.Compared with the single cultivations of P.maximowicziana,the mixed cultivation between P.maximowicziana and L.perenne,and three plants mixture reduced the biomass,Cd content and Cd accumulation amount on shoots by 46.79％,22.00％,58.55％ and 21.55％,24.14％,40.47％,respectively.Mix cultivation also had an effect of promoting and suppressing on the performance of the other two plants.The highest Cd accumulation amount in separate pots was observed in mixed cultivation among three plants,which reached up to 492.39μg / pot.Therefore,the mixed cultivation of P.maximowicziana and T.pretense increased the biomass,Cd content and Cd accumulation amount on shoots of P.maximowicziana,thus improved the efficiency of Cd restoration significantly.In terms of the whole restoration efficiency,the mixed cultivation of three plant species performed the best,thus conducive to applications.关键词
镉/假繁缕/黑麦草/三叶草/混种Key words
Cadmium/Pseudostellaria maximowicziana/Lolium perenne/Trifolium pretense/intercropping分类
资源环境引用本文复制引用
王兴伟,刘子芳,范燕,邓权,黄忠胜..混种黑麦草和三叶草对假繁缕镉积累的影响[J].四川环境,2017,36(2):1-6,6.基金项目
雅安市重点科技计划项目(S1430305). （S1430305）
