农业环境科学学报2012，Vol.31Issue(7)：1281-1288,8.
间作对不同品种玉米和大叶井口边草吸收积累重金属的影响
Effects of Intercropping on the Contents and Accumulation of Heavy Metals in Maize varieties and Pteris cretica L.
摘要
Abstract
Intercropping as an effective approach has been proposed to improve soil contaminated by heavy metals. A soil pot-culture experiment was carried out to study the effects of intercropping on the heavy metals uptake by Maize varieties {Zea mays L. Yunrui6,Zea mays L. Yunrui8, Zea mays L. Yunrui88) with Pteris cretica L.(an arsenic-accumulating plant). The results showed that all tested maize varieties could reduce the biomass of Pteris cretica L. , but there was no significant difference. Intercropping treatments significantly increased As and Cd concentration of the shoots and roots of Pteris cretica L. as well as Pb concentration in roots but significantly decreased Pb uptake in shoots. Intercropping Pteris cretica L. significantly increased the heavy metal content in different organs of maize, only the As uptake in the stem of Zea mays L. Yunrui88 was reduced from 310.89 mg·kg‐1 for mono-crop to 145.86 mg·kg‐1. Compared with monocropping method, intercropping of Pteris cretica L. and Zea mays L. Yunrui88 could significantly enhance the improvement efficiency of the soil contaminated by As, Cd, Pb in intercropping system.关键词
玉米/大叶井口边草/间作/重金属Key words
maize/ Pteris cretica L./ intercropping/ heavy metal分类
农业科技引用本文复制引用
秦欢,何忠俊,熊俊芬,陈丽娟,毕云..间作对不同品种玉米和大叶井口边草吸收积累重金属的影响[J].农业环境科学学报,2012,31(7):1281-1288,8.基金项目
云南省科技厅应用基础研究基金资助项目(2008CD127) （2008CD127）
