AM真菌对小麦根系土壤中Cd迁移转化的影响  

Effects of AM Fungi on the Migration and Transformation of Heavy Metal Cd in Wheat Root

作　　者：赵志瑞 胡紫如 刘慧 李硕阳 左天源 孟祥源 ZHAO Zhirui;HU Ziru;LIU Hui;LI Shuoyang;ZUO Tianyuan;MENG Xiangyuan(Hebei GEO University,Shijiazhuang 050031,China;Institute of Geographic Sciences and Natural Resources Research,Beijing 100101,China)

机构地区：[1]河北地质大学水资源与环境学院,河北石家庄050031 [2]河北地质大学、河北省高校生态环境地质应用技术研发中心,河北石家庄050031 [3]河北地质大学、河北省水资源可持续利用与开发重点实验室,河北石家庄050031 [4]中国科学院地理科学与资源研究所,北京100101

出　　处：《河北地质大学学报》2025年第1期94-102,共9页Journal of Hebei Geo University

基　　金：国家自然科学基金联合基金项目(U21A2023);河北地质大学科技创新团队项目(KJCXTD-2021-09)。

摘　　要：以小麦农田土壤为研究对象,利用3株原位AM真菌探究Cd胁迫下接种AM真菌后土壤中重金属Cd含量及形态变化和AM真菌对小麦生长及其吸收转运重金属情况的影响。结果表明:3种AM真菌对Cd胁迫均具有一定的耐性;接种AM真菌可以有效促进小麦植株株高和生物量的增长,降低土壤pH值,对土壤总Cd去除率为0.13%~47.81%,且可以促进Cd向更稳定的形态转变;在一定Cd浓度范围内AM真菌增大了小麦根系的富集系数,降低了小麦的转运系数。确定出异形球囊霉和苏格兰球囊霉分别在中低Cd浓度下和高Cd浓度对土壤环境修复及小麦生长促进效果最好。Taking wheat farmland soil as the research object,three in-situ AM fungi were used to explore the content and morphological changes of heavy metal Cd in soil after inoculation with AM fungi under Cd stress and the effects of AM fungi on wheat growth and its absorption and transport of heavy metals.The results showed that:the three AM fungi had certain tolerance to Cd stress.Inoculation with AM fungi can effectively promote the growth of plant height and biomass of wheat plants,reduce soil pH value,remove 0.13%~47.81%of total Cd in soil,and promote the transformation of Cd to a more stable form.In a certain range of Cd concentration,AM fungi increased the bioconcentration factor of wheat roots and reduced the translocation factor of wheat.It was determined that Glomus heterosporum and Glomus caledonium had the best effect on soil environmental restoration and wheat growth promotion at low or medium Cd concentrations and high Cd concentrations,respectively.

关 键 词：丛枝菌根真菌 重金属镉 迁移转化 小麦 根系土壤 

分 类 号：X703.5[环境科学与工程—环境工程]