内蒙古露天煤矿区回填土壤具生态适应能力丛枝菌根真菌的筛选  

The screening of arbuscular mycorrhizal fungi with high ecological adaptations in backfill soil of open pit mining area in Inner Mongolia

作　　者：张淑彬[1] 纪晶晶[2] 王幼珊 邹国元[1] 胡振琪[2] 

机构地区：[1]北京市农林科学院植物营养与资源研究所,北京100097 [2]中国矿业大学(北京)土地复垦与生态重建研究所,北京100083

出　　处：《生态学报》2009年第7期3729-3736,共8页Acta Ecologica Sinica

基　　金：北京市科学技术委员会资助项目(D0706004040431);国家科技部科技基础条件平台建设资助项目(2005DKA21201);国家教育部新世纪优秀人才计划资助项目(NCET-04-0484)

摘　　要：在盆栽试验条件下,应用灭菌的露天煤矿区回填土壤为培养基质,研究8个丛枝菌根真菌菌种(株)对沙打旺生长及根系侵染的影响。结果表明,分离自江西和新疆的Glomus mosseae的2个菌株在露天煤矿区回填土壤上能够显著提高沙打旺的生物量,并能有效改善植株的磷、氮营养;其侵染率均在50%以上,且根外繁殖体数显著高于其他接种处理。说明此两个菌株在该土壤上具有良好的生态适应能力,有助于露天煤矿区植被重建和生态恢复等研究工作的进一步开展。The effects of eight isolates of arbuscular mycorrhizal （AM） fungi on the plant growth and root colonization of Astragalus adsurgens were investigated in greenhouse pot experiment with backfill soil of open pit mining area. The resuhs showed that two isolates of G. rnosseae from Jiangxi and Xinjiang increased the biomass of plant and effectively enhanced P and N nutrition of host plant. The infection rates of these two isolates were above 50% , and the number of extraradieal propagule was more than that of the other isolates. It was proved that the ecological adaptability of two isolates, G. mosseae- 2 and G. mosseae-3 in the backfill soil were significantly higher than that of the other isolates; they are expected to benefit the plant cover reconstruction and ecological restoration in open pit mining area.

关 键 词：丛枝菌根真菌 沙打旺 吸磷量 吸氮量 

分 类 号：S154.3[农业科学—土壤学]