叶面喷施无机和螯合钙、锌肥对花生的降镉效果

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中图分类号：S565.2；X53 文献标志码：A 文章编号：1672-2043（2025）06-1439-12 doi：10.11654/jaes.2024-0436

Effects of foliar application of inorganic and chelated calciumand zinc fertilizerson cadmium reduction in peanuts

LI Lirong1，2，WANG Yurong1，ZHOU Zhigao1，DING Changfeng1，2*，WANG Xingxiang1，2，3 （1.StateKeyLaboratoryofSoil&SustainableAgriculture（InstuteofSoilScience，ChineseAcadeyofSciences）Nanjing135， China;2.Universityfiecadefices，eijno49，ina;3.ExpritalStaioofedSoilinseadyf Sciences，Yingtan335211，China）

Abstract：Theinfluenceoffoliaraplicationofmicronutrientsonthecadmium（Cd）content inpeanut grainsremainsambiguous.This studyexamiesttsofflppationofogaclertilcalate）gaccertclate） differentcelatedalum/zinfertilizers（EDTAcelatedcum/zin，sgaraloolcelatedcalcium/zinc）ontereductionofCdifour peanutvarieties（WanhuaNo.4Yueyou43，HuayuNo.2，andXianghua2008）throughpotandfieldexperiments.Theojectiveisto identifythemostefectivefoliarfertilizerforreducingCdcontentandtoelucidateitsunderlyingmechanism.Resultsfromthepot experimentsrevealedthatthefoliarapplicationofEDTAchelatedcalcium（DTA-Ca）andEDTAchelatedzinc（EDTA-Zn）treatments had the best Cd reduction effect，achievinga Cd reduction rate of 15.1% to 30.7% across all four peanut varieties.Field experiments further validated the Cdreduction effctofEDTA-Caand EDTA-Zntreatments，with Cdreduction rates in grains ranging from 24.0% to 40.0% MechanisticstudiesontheCdreductiofectofEDTA-CaandEDTA-ZntreatmentsintheYueyou43varietydemostratedthatDTACa and EDTA- -Zn treatments significantly increased Cd accumulation in peanut stems（ 6.4% ， 13.6% ）and leaves （37.6%， 26.9% ）， increasedtheproportionofCdinorganelesandsolublefractionsinstemsandleaves，andsignificantlyducedCdtranslocatiofrom stemsandleavestograins.Inconclusion，EDTA-chelatedcalciumandzincfertilizerssignificantlyreduceCdcontentinpeautgans. Keywords ： peanut; cadmium; chelated fertilizer; foliar application; subcellular distribution

镉（Cd）是环境污染物中毒性最强的重金属之一。（剩余30146字）