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...
