土壤2017，Vol.49Issue(5)：951-957,7.DOI:10.13758/j.cnki.tr.2017.05.014
土壤紧实度对伴矿景天生长及镉锌吸收性的影响研究
Effects of Soil Compaction on Phytoextraction of Cadmium and Zinc Polluted Soils by Sedum plumbizincicola
摘要
Abstract
A pot experiment was conducted to study the effects of soil compaction on the growth of sSedum plumbizincicola and its uptake of cadmium (Cd) and zinc (Zn). Soils of different textures (clay, loamy clay and sandy loam) were treated respectively with no compaction, low-level compaction and high-level compaction. In comparison to no compaction, soil compaction resulted in significant decreases in shoot biomass ofSedum plumbizincicola by 66.8%-83.5%, 59. 9%-60.4% and 57.9%-71.4% in sandy loam, loamy clay and clay soils, respectively. However, the root activity was significantly improved by 142%-241% under high compaction treatment. In clay loam soil, high compaction resulted in significant decreases in Cd and Zn contents of shoot biomass. However, in sandy loam and clay soils, soil compaction had no significant effects on Cd and Zn contents of shoot biomass. In the respective sandy loam, loam clay and clay soils, soil compaction significant decreased Cd uptakes by 50.4%-73.8%, 61.4%-74.9% and 43.4%-63.3%, Zn uptakes by 48.7%-79.5%, 73.6%-79.0% and 46.1%-63.5%, respectively. Overall, soil compaction has the largest impacts on inhibiting the efficiencies of Cd and Zn uptakes bySedum plumbizincicola in loam clay soil in the presenting study.关键词
植物吸取修复/重金属污染/紧实度/水稻土/土壤质地Key words
Phytoextraction/Heavy metal pollution/Soil compaction/Paddy soil/Soil texture分类
资源环境引用本文复制引用
王丽丽,周通,李柱,周嘉文,吴胜春,吴龙华..土壤紧实度对伴矿景天生长及镉锌吸收性的影响研究[J].土壤,2017,49(5):951-957,7.基金项目
国家自然科学基金项目(41325003)资助. （41325003）
