播期和秧龄对镉低吸收晚稻产量及各部位镉含量的影响

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引用格式：，等.播期和秧龄对镉低吸收晚稻产量及各部位镉含量的影响[J].农业科学，2025（5）：12-15.DOI：10.16498/j.cnki.hnnykx.2025.005.003

中图分类号：S511 文献标识码：A 文章编号：1006-060X（2025）05-0012-04

Abstract：This studyaims toclarifytheefectsof sowingdateand seedlingage ontheyieldandcadmium accumulation charactersticsofthelatericevarietyQingliansiiao'Asingle-factorrandomizedblockdesignwasadopted.Theyieldsandcadium contentunderthre sowingdates （June19，June27，andJuly5）andthreesedlingages （22，27，and32days）weremeasured.The resultsaredescribedasfolows.Sowingdatesignificantlyaffectedthericeyieldandcadmiumcontent.Theyieldwashigheinthe caseofsowinginmid-to-lateJunebutsignifcantlydecreasedinthecaseofsowinginearlyJuly.Themainfactorsafectigtherice yieldwerethenumberofgrainperearandseedsetingrate.Thecadmiumaccumulationinvariouspartswassignificantlyreduced underearlysowingtreatment.（2）There wasnosignificant diferenceinyieldamongdiferentsedingages，andtheseedlingsofa widerange ofages weresuitable.Thecadmiumcontent waslowinvarious partsinthe seedlingage groupof2 days.Intheseedling age groupof3days，althoughthecadmiumcontent inbrownricewaslower，thatinstems，leaves，andhuskswashigher.Terefore earlysowing in mid-to-lateJunecombined withasedlingageofabout22days isconducive toensuring theyield whilereducingthe cadmium accumulation of'Qingliansimiao'.

Keywords：sowing date;seedlingage;yield;cadmiumcontent;late rice

水稻是全球主要的粮食作物之一，对保障全球粮食安全具有重要作用。（剩余6202字）