秸秆碳对玉米重金属积累的阻控及健康风险评估

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关键词：秸秆碳；农作物；重金属积累；健康风险评价

中图分类号：X173 文献标识码：A 文章编号：1008-9500（2025）10-0032-04

DOI： 10.3969/j.issn.1008-9500.2025.10.009

Abstract：Theexperiment explores theinhibitory efectsof crushed straw，composted straw，and straw biocharon the accumulationof Pb，Zn，andCd incornfruitsinheavy metal poluted soil，andevaluates their health risks.Theresults showthat with theaggravationofsoil pollution，the heavy metalcontent incorn fruits significantlyincreases，and he aplication of straw carbon can efectivelyreduce itsaccumulation，among which straw biocharhas the best ffect.The health risk assessment indicates that the application of biochar can reduce health risks，but the measured values are still above thesafety threshold.Researchhas shown thatstraw biocharcan effectivelyalleviate themigrationof heavy metals to edible parts ofcorn，reduce population exposure risks，providing theoretical basis for safe consumption of agricultural products.

Keywords： straw carbon; crops; accumulation of heavy metals; health risk assessment

农田土壤重金属污染已成为全球性环境问题。（剩余3674字）