安康地区水稻和玉米硒含量与土壤硒相关性研究李傲瑞,陈继平*,赵飞飞,王池,张志敏(陕西省地质调查院水工环地质调查中心,陕西西安710068)摘要以陕西安康地区主要农作物水稻、玉米及其根系土为研究对象,检测根系土pH、总硒和各形态硒含量及农作物硒含量等,比较水稻和玉米根系土各形态硒的比例差异,并进行相关性及主成分分析。结果表明,研究区土壤总硒含量较高,有效硒含量较低,残渣态硒、腐殖酸结合态硒和强有机结合态硒是研究区土壤硒的主要形态。水稻和玉米均达到食品安全标准,水稻的富硒能力强于玉米。水稻根系土pH、总硒和各形态硒含量之间均存在不同程度的相关性,玉米根系土总硒仅与残渣态硒含量呈显著正相关(P<0.001)。关键词水稻;玉米;硒含量;土壤硒;相关性;安康地区中图分类号P595文献标识码A文章编号0517-6611(2023)01-0055-05doi:10.3969/j.issn.0517-6611.2023.01.013开放科学(资源服务)标识码(OSID):StudyontheCorrelationbetweenSeleniumContentofRiceandCornandSoilSeleniuminAnkangAreaLIAo-rui,CHENJi-ping,ZHAOFei-feietal(ShaanxiHygrogeologyEngineeringGeologyandEnvironmentGeologySurveyCenter,Xi’an,Shaanxi710068)AbstractThemaincropsofrice,cornandtheirrootsoilsinAnkang,Shaanxiweretakenastheresearchobjects,detectedtherootsoilpH,to-talseleniumandvariousformsofseleniumcontentandcropseleniumcontent,etc.,comparedtheratioofseleniumintherootsoilofriceandcorn,andanalyzedthecorrelationandprincipalcomponents.Theresultshowedthatthetotalseleniumcontentofthesoilinthestudyareawasrelativelyhigh,andtheeffectiveseleniumcontentwasrelativelylow.Residualselenium,humicacid-boundseleniumandstrongorganicallyboundseleniumwerethemainformsofsoilselenium.Bothriceandcornmetthefoodsafetystandards,andtheselenium-richcapacityofricewasstrongerthancorn.TherewerevaryingdegreesofcorrelationamongricerootsoilpH,totalseleniumandvariousformsofselenium.Thetotalseleniumofcornrootsoilwasonlysignificantlypositivelycorrelatedwiththeresidualseleniumcontent(P<0.001).KeywordsRice;Corn;Seleniumcontent;Soilselenium;Correlation;Ankangarea基金项目陕西省地质调查院公益性地质调查项目“陕西省安康地区土地质量调查评价及综合研究”(20...