AM真菌对锌污染土壤中玉米微量元素营养的影响  

CONTRIBUTION OF ARBUSCULAR MYCORRHIZAL FUNGUS TO MINERAL NUTRITION OF MAIZE SEEDLINGS GROWN IN ZINC CONTAMINATED SOIL

作　　者：申鸿[1] 刘于 白淑兰[3] 李晓林[2] 

机构地区：[1]西南大学资源环境学院,重庆400716 [2]农业部植物营养学重点实验室教育部植物-土壤相互作用重点实验室中国农业大学资源与环境学院,北京100094 [3]内蒙古农业大学林学院,内蒙古呼和浩特010019

出　　处：《西南农业大学学报（自然科学版）》2006年第2期205-212,共8页Journal of Southwest Agricultural University

基　　金：国家自然科学基金(40071050);国家重点基础研究规划资助项目(G1999011807)

摘　　要：通过3个不同施锌水平土壤的盆栽玉米试验,分析了丛枝菌根真菌Glomus caledonium在土壤发生锌污染时,对玉米苗期矿质营养的影响。研究表明,即使在土壤锌施入量达600 mg/kg时,接种处理的植株叶、茎和根系中的铁、铜、镁、钙含量仍能保持相对的稳定,从而保证了宿主植物在锌污染土壤中的矿质营养平衡,增强宿主植物对锌污染的抗(耐)性。表明丛枝菌根真菌在重金属污染土壤的生物修复中具有重要的生态学价值。A pot experiment was conducted to investigate the mineral nutrition of maize （ Zea mays L. ） plants with or without arbuscular mycorrhizal fungus（ AMF, Glomus caledonium） inoculation supplied with Zn at 0, 300 and 600 mg/kg soil. The results showed that the concentrations of Fe, Cu, Mg and Ca in the leaves, stems and roots of the AMF-inoculated plants were relatively stable as compared with the non-inoculated control. Since a balance was maintained among the micro-nutrients in the host plants with AMF inoculation, their growth and heavy metal-tolerance were improved. It is, therefore, concluded that AMF might play an important role in heavy metal bioremediation.

关 键 词：丛枝菌根真菌 矿质营养 锌污染 玉米 

分 类 号：S513.062[农业科学—作物学]