文档介绍：本文档下载自文库下载网,内容可能不完整,您可以点击以下网址继续阅读或下载:/,36(10):1760?1768ISSN0496-3490;CODENTSHPA9b/E-mail:******@.cnDOI:.*张吉旺刘鹏山东农业大学农学院/作物生物学国家重点实验室,山东泰安271018摘要:在大田条件下研究树脂包膜控释肥(CRF)和硫包膜控释肥(SCF)对夏玉米花后光合产物和氮素积累与分配及产量的影响。结果表明,花后控释肥处理的光合速率始终较高,在相同施肥量(N、P、K量相同)情况下,控释肥CRF(1428kghm?2)和SCF(1668kghm?2)及其减量25%F,1260kghm?2)处理;控释肥减量25%时,F处理;成熟期籽粒的氮素积累,F处理,并随着控释肥比例的增加而增加,全量与减量25%的处理无显著差异。控释肥能显著提高玉米产量,%%;控释肥减量25%时,%%;其氮肥利用率和农学效率也均显著高于普通肥处理。关键词:夏玉米;控释肥;干物质积累与分配;氮素积累与分配;产量EffectsofControlled-umulationandDistributioninSummerMaizeZHAOBin,DONGShu-Ting?,ZHANGJi-Wang,andLIUPeng/,ShandongAgriculturalUniversity,Tai’an271018,ChinaAbstract:Thefieldexperimentwasconductedtoinvestigatetheeffectsofcontrolled-releasefertilizers(includingonekindoffertilizerenvelopedbycolophony,CRF,andtheotherkindoffertilizerenvelopedbysulfur,SCF)umulationanddistribu--,P,andK,applyingCRF(1428kgha?1)andSCF(1668kgha?1)F,1260kgha?1).WhentheappliedamountsoftheCRFandSCFweredecreasedby25%,the/,,andwasincreasedwithincreasingappliedproportionoffertilizer,buttherewasnosignificantdifferencebetweentreatmentsofCRF,SCFand25%-%%%,%%,respectively,thenitro-genuseefficiency(NUE):Summermaize;Controlled-releasefertilizer;Accumulationanddistributionofdrymatter;Accumulati/