耕作与栽培2025，Vol.45Issue(6)：8-11,17,5.
土壤调理剂与叶面阻控剂对土壤镉污染修复研究
Effects of Soil Amendments and Foliar Passivators on Cadmium Pollution Remediation in Soils
李婷婷 1李明伟 1王晶琴 1张明刚1
作者信息
- 1. 绥阳县现代农业高效园区发展服务中心,贵州 绥阳 563300
- 折叠
摘要
Abstract
Soil amendment and foliar passivation are two commonly used techniques for the safe utilization of contaminated farmland.To investigate the effects of combined application of soil amendments and foliar inhibitors at different dosages on cadmium(Cd)content in rice grains and soil bioavailable Cd under a rice-rapeseed rotation system in strictly regulated farm-land of Suiyang County,a field experiment was conducted with the following treatments:T1(soil amendment:100 kg/667 m2+foliar inhibitor:500 mL/667 m2),T2(soil amendment:200 kg/667 m2+foliar inhibitor:1 000 mL/667 m2),and a control(ck).The results showed that the Cd content in rice grains followed the order:T2<T1<ck,with values of 0.17 mg/kg,0.26 mg/kg and 0.39 mg/kg,respectively.Compared to ck,T2 and T1 reduced grain Cd content by 56.4%and 33.3%,respectively,with T2 achieving an additional 23.1 percentage point reduction over T1.Notably,the Cd content in T2-treated rice fell below the national food safety threshold(0.2 mg/kg).Similarly,soil bioavailable Cd content exhibited T2(0.25 mg/kg)<T1(0.31 mg/kg)<ck(0.40 mg/kg),corresponding to reductions of 37.5%and 22.5%for T2 and T1,respectively,with T2 outperforming T1 by 15.0 percentage points.In conclusion,the combined application of 200 kg/667 m2 soil amendment+1 000 mL/667 m2 fo-liar inhibitor under rice-rapeseed rotation in strictly regulated farmland significantly reduced grain Cd content below China's food safety limit(<0.2 mg/kg),demonstrating superior remediation efficacy.关键词
土壤调理/叶面阻控/镉污染/耕地安全Key words
soil Amendments/foliar passivators/cadmium pollution/safe utilization分类
农业科技引用本文复制引用
李婷婷,李明伟,王晶琴,张明刚..土壤调理剂与叶面阻控剂对土壤镉污染修复研究[J].耕作与栽培,2025,45(6):8-11,17,5.
