丛枝菌根真菌（AMF)协同生物炭对土壤重金属镉（Cd）的固定化效果研究

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关键词丛枝菌根真菌；重金属；镉污染；生物炭

中图分类号 X53；X173 文献标识码A 文章编号 1007-7731（2025）09-0051-08

DOI号 10.16377/j.cnki.issn1007-7731.2025.09.012

AbstractIn this study，local indigenous arbuscular mycorrhizal fungi （AMF）-Glomus consrictum wereselected. Under the stress of cadmium （Cd） at different concentrations （ 0 ， 5 ，and 1 0 m g / k g ）， to explore its effects on the physical and chemicalpropertiesofsoilandthefixationefectofCdinsoilinthree treatmentgroups： noadditionofbiochar，additionof biochar A （corn stalks），and adition of biochar B（corn cobs）.TheFTIR spectral analysis results showed that the functional groupscontainedinthetwo types of biochar were approximatelythe same.Theresultsof theco-treatmentof AMF and biochar showed that the addition of two biochars decreased soil total Cd by 2.9%- 2 5 . 1 % ，soilavailable Cd content by 4 . 8 % - 1 5 . 3 % ，and increased soil available potassium and soil available phosphorus content under different initial Cd concentrations. The soil and soil organic matter increased slightly，but the content of soil alkali-hydrolyzed difused nitrogen decreased.Comprehensivecomparison，under low Cdconcentration，corncob biochar hadamore significant efect on reducing soil total Cd and available cadmium，butunder medium and high Cd concentration，corn straw biochar had a more significant effect on reducing soil total Cd and available Cd.

Keywordsarbuscular mycorrhizal fungi; heavy metals; cadmium pollution; biochar

耕地是农业最基本的生产资料，耕地安全是民生之本。（剩余12063字）