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1、中国水稻科学(ChinJRiceSci),２０１４,２８(６):６３２－６３８http://www．ricesci．cn６３２DOI:１０．３９６９/ji．ssn．１００１Ｇ７２１６．２０１４．０６．００９江苏沿海地区减磷对机插常规粳稻产量形成及品质的影响黄丽芬陶晓婷高威王远玲庄恒扬∗(扬州大学江苏省作物遗传生理国家重点实验室培育点/粮食作物现代产业技术协同创新中心,江苏扬州２２５００９;∗通讯联系人,EＧmail:zhy７９７９３５６＠sina．com)EffectofReducedPhosphorusFertilize
2、rApplicationonYieldFormationandQualityofjaponicaRiceinJiangsuCoastalRegionHUANGLiＧfen,TAOXiaoＧting,GAOWei,WANGYuanＧling,ZHUANGHengＧyang∗(JiangsuKeyLaboratoryofCropGeneticsandPhysiology/CoＧInnovationCenterforModernProductionTechnologyofGrainCrops,YangzhouUniversity
3、,Yangzhou２２５００９,China;∗Correspondingauthor,EＧmail:zhy７９７９３５６＠sinac．om)HUANGLifen,TAOXiaoting,GAOWei,etal．EffectofreducedphosphorusfertilizerapplicationonyieldformationandqualityofjaponicariceinJiangsucoastalregion．ChinJRiceSci,２０１４,２８(６):６３２Ｇ６３８．Abstract:Soilavail
4、ablephosphoruscontentoffarmlandhasreachedahighlevelinJiangsucoastalareaduetolongＧtermapplicationoflargeamountsofphosphatefertilizer．ButcurrenthigherratesofphosphatefertilizerdecreasesthephosＧphoruseffect,evenhavinganadverseeffectonthesurroundingwaterenvironment．Af
5、ieldexperimentwasconductedtoinvestigatetheeffectofreducedphosphorusfertilizerapplicationontheyieldformationandqualityinrice．SixtreatＧmentsweredesignedasCK(nofertilization),conventionalNPKfertilizerapplication,nophosphorusfertilization,reＧducedPrate(５０％ofconvention
6、alphosphorusfertilizationrate),conventionalphosphorusfertilization,increasedPrate(１５０％ofconventionalphosphorusfertilization)．TheresultsshowedthattherewerenosignificantdifferenceinSPADofriceleavesamongallthetreatmentsexceptCKatjointing,heading,middleandlatefillings
7、tages．Thedrymatteraccumulationatjointing,headingstage,maturitystageandnetdrymatteraccumulationaswellasnetpopulaＧtiongrowthrateduringjointingＧheading,headingＧmaturinghadalsonosignificantdifferenceamongallthetreatmentsexceptCK．The１０００Ｇgrainweightundernoorreducedphos
8、phorustreatmentswassignificantlylowerthanthatofconＧventionalphosphorustreatments,whiletherestofyieldcomponentsaswellaseconomiccoefficienthadnosignifican
