文档介绍：玉米籽粒含硒量与土壤硒的关系及硒肥富硒效应研究杨德平1,周成河,饶莉,潘慧(恩施职业技术学院生物工程系,湖北恩施445000)摘要:[目的]探究利用富硒土壤和硒肥生产富硒玉米的可行性,为生产富硒玉米提供实践依据。[方法]选取不同区域不同地块的样点分别取土壤和当年生长玉米籽粒样品,测定土壤和玉米籽粒含硒量,研究二者的相关性;同时进行叶面喷施硒肥实验,研究硒肥对玉米籽粒含硒量的影响。[结果]玉米含硒量和聚硒系数均与土壤含硒量成极显著正相关(P<),但除高硒土壤外,玉米聚硒系数很低,其含硒量难以达到富硒标准;而叶面喷施硒肥可使玉米籽粒含硒量增加到8倍以上。[结论]在一般富硒土壤上难以生产出富硒玉米,而叶面喷施硒肥是生产富硒玉米经济有效的途径。关键词:玉米,土壤,富硒,富集系数,硒肥。中图分类号:S58文献标识码:ARsearchontherelationshipbetweenSeleniumContentinMaizeGrainandWhichinSoilandtheEffectofseleniumfertilizerYangDeping(Dpartmentofbioengineering,EnshiTechnicalCollege,hubeiEnshi445000)Abstract:[Objective]Inordertoprovidepracticalbasis,toexplorethefeasibilityfortheproductionofselenium_enrichedcorntouseofselenium_enrichedsoilandSe_fertilizer.[Method]ThissamplepointswereselectedfromdifferentregionsandplotsandThecorrespondingsoilandcorngraingrewintheyearweretaken,asseleniumcontentinsoilandcornkernelsweremeasuredandtherelationshipbetweenthetwowasdetermined.[result]SeleniumcontentandBioconcentrationfactorofcornSeleniumareExtremelysignificantpositivecorrelationwithseleniumcontentofsoil(P<),Butinadditiontohighseleniumsoil,theBioconcentrationfactorisverylow,itisdifficulttoachievethestandardofSelenium_enrichment;FoliarfertilizationofSe_fertilizercanincreaseseleniumcontentincornkernelstomorethan8times.[conclusion]Itisdifficulttoproduceselenium_enrichedcorningeneralselenium_enrichedsoil,butfoliarfertilizationofSe_fertilizeriseconomic