农业环境科学学报2025，Vol.44Issue(6)：1439-1450,12.DOI:10.11654/jaes.2024-0436
叶面喷施无机和螯合钙、锌肥对花生的降镉效果
Effects of foliar application of inorganic and chelated calcium and zinc fertilizers on cadmium reduction in peanuts
摘要
Abstract
The influence of foliar application of micronutrients on the cadmium(Cd)content in peanut grains remains ambiguous.This study examines the effects of foliar application of inorganic calcium fertilizer(calcium nitrate),inorganic zinc fertilizer(zinc sulfate),and different chelated calcium/zinc fertilizers(EDTA chelated calcium/zinc,sugar alcohol chelated calcium/zinc)on the reduction of Cd in four peanut varieties(Wanhua No.4,Yueyou 43,Huayu No.22,and Xianghua 2008)through pot and field experiments.The objective is to identify the most effective foliar fertilizer for reducing Cd content and to elucidate its underlying mechanism.Results from the pot experiments revealed that the foliar application of EDTA chelated calcium(EDTA-Ca)and EDTA chelated zinc(EDTA-Zn)treatments had the best Cd reduction effect,achieving a Cd reduction rate of 15.1%to 30.7%across all four peanut varieties.Field experiments further validated the Cd reduction effect of EDTA-Ca and EDTA-Zn treatments,with Cd reduction rates in grains ranging from 24.0%to 40.0%.Mechanistic studies on the Cd reduction effect of EDTA-Ca and EDTA-Zn treatments in the Yueyou 43 variety demonstrated that EDTA-Ca and EDTA-Zn treatments significantly increased Cd accumulation in peanut stems(6.4%,13.6%)and leaves(37.6%,26.9%),increased the proportion of Cd in organelles and soluble fractions in stems and leaves,and significantly reduced Cd translocation from stems and leaves to grains.In conclusion,EDTA-chelated calcium and zinc fertilizers significantly reduce Cd content in peanut grains.关键词
花生/镉/螯合肥/叶面喷施/亚细胞分布Key words
peanut/cadmium/chelated fertilizer/foliar application/subcellular distribution分类
农业科技引用本文复制引用
李丽荣,王玉荣,周志高,丁昌峰,王兴祥..叶面喷施无机和螯合钙、锌肥对花生的降镉效果[J].农业环境科学学报,2025,44(6):1439-1450,12.基金项目
国家现代农业产业技术体系项目(CARS-13) Earmarked Fund for China Agriculture Research System(CARS-13) （CARS-13）
