草业学报Issue(2)：68-76,9.DOI:10.11686/cyxb2015121
施肥和苜蓿接种根瘤菌对苜蓿生长及铁尾矿砂基质理化性质的影响
Effects of fertilizer and Rhizobium inoculation on alfalfa growth on mine tailings and the physicochemical properties of iron tailings
摘要
Abstract
This study was undertaken to determine the effects of fertilizer application (iron tailings and organic fertilizer)and Rhizobium inoculation with different strains on the growth of alfalfa planted in iron mine tailings and the physicochemical properties of the soil-plant system in outdoor pots.Rhizobium inoculation significantly increased height growth,root growth,above ground fresh weight,root fresh weight,total biomass and fresh nodule weight.The most effective Rhizobium was strain No.17676.Inoculated alfalfa also influenced the phys-icochemical properties of iron mine tailings,but the effect was not significant in the first year of the study.Fer-tilizer application markedly promoted alfalfa growth.Increasing fertilizer rates increased plant height,above ground fresh weight and total biomass.The N2 fertilizer treatment produced the greatest increase in root noduleweight.Fertilizer application significantly reduced soil bulk density and pH but increased organic matter,avail-able nitrogen,available phosphorus,and available potassium in the mine tailings soil.These effects were sig-nificantly higher for the N3 treatment compared to lower fertilizer rates.关键词
铁尾矿/紫花苜蓿/根瘤菌/施肥/理化性质Key words
iron tailings/alfalfa (Medicago sativa )/Rhizobium/fertilization/physicochemical properties引用本文复制引用
杨何宝,李继泉,王俊娟,李玉灵..施肥和苜蓿接种根瘤菌对苜蓿生长及铁尾矿砂基质理化性质的影响[J].草业学报,2016,(2):68-76,9.基金项目
“十二五”环境领域国家科技计划课题（2012BAC09B03）和“十二五”农村领域国家科技计划课题（2011BAD38B0103）资助。 （）
