江西农业学报2026，Vol.38Issue(1)：101-109,9.DOI:10.19386/j.cnki.jxnyxb.2026.01.014
不同钝化材料对土壤镉钝化—小白菜镉阻控的协同效应
Synergistic Effects of Different Passivation Materials on Soil Cadmium Immobilization and Cadmium Uptake Reduction in Brassica chinensis
常普 1范珍 2赵家印 2刘宇 2吴云成 2李丽娜 3王蒙蒙 2田伟2
作者信息
- 1. 昭通市生态环境局 镇雄分局生态环境监测站,云南 昭通 657200
- 2. 生态环境部南京环境科学研究所,江苏 南京 210042
- 3. 云南省生态环境科学研究院,云南 昆明 650032
- 折叠
摘要
Abstract
To clarify the remediation performance of different passivation materials in lightly cadmium(Cd)-contaminated farmland and their synergistic effects on crop growth,a field experiment was conducted in Kunming using pakchoi(Brassica chinensis).Seven treatments were established,including non-fertilization(CK1),traditional fertilization(CK2),biochar(BR),composted organic fertilizer(CP),Cd-immobilizing mineral amendment(DC),and their combinations(BR+CP,DC+CP).The results showed that all passivation treatments improved soil pH value,organic matter,and dissolved organic carbon(DOC),with CP and DC+CP exhibiting particularly strong effects during the mid-to-late growth stages.Soil available Cd concentrations were significantly reduced across treatments,with BR+CP achieving the lowest level at the mid-growth stage(0.0845 mg/kg).Cadmium accumulation in pakchoi was also markedly suppressed,with DC+CP showing the greatest reduction(57%),while CP significantly enhanced biomass,demonstrating a clear"yield promotion-Cd inhibition"synergy.In conclusion,the rational selection and combination of passivation materials can effectively reduce Cd bioavailability,improve soil quality,and simultaneously enhance crop productivity and food safety,providing valuable technical guidance for the green remediation of lightly Cd-contaminated farmland.关键词
镉污染/生物有机肥/生物炭/钝化材料/小白菜Key words
Cadmium contamination/Bio-organic fertilizer/Biochar/Passivation materials/Brassica chinensis分类
农业科技引用本文复制引用
常普,范珍,赵家印,刘宇,吴云成,李丽娜,王蒙蒙,田伟..不同钝化材料对土壤镉钝化—小白菜镉阻控的协同效应[J].江西农业学报,2026,38(1):101-109,9.
