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1、中国水稻科学(ChinJRiceSci),２０１４,２８(５):５３４－５４０http://www．ricesci．cn５３４DOI:１０．３９６９/ji．ssn．１００１Ｇ７２１６．２０１４．０５．０１１灌浆乳熟期土壤水势对苏打盐渍土水稻产量及生理性状的影响耿艳秋金峰朱明霞高显颖王帅华霜邵玺文∗张连学∗(吉林农业大学,吉林长春１３０１１８;∗通讯联系人,EＧmail:shaoxiwen＠１２６．com,zlx８６３＠１６３．com)EffectsofSoilWaterPotentialatGrainFillingＧMilkyStageonRiceYi
2、eldandPhysiologicalTraitsinSalineＧalkaliSoilGENGYanＧqiu,JINFeng,ZHUMingＧxia,GAOXianＧying,WANGShuai,HUAShuang,SHAOXiＧwen∗,ZHANGLianＧxue∗(JilinAgriculturalUniversity,Changchun１３０１１８,China;∗Correspondingauthor,EＧmail:shaoxiwen＠１２６．com,zlx８６３＠１６３．com)GENGYanqiu,JINFeng,ZHUMingxia,et
3、al．EffectsofsoilwaterpotentialatgrainfillingＧmilkystageonriceyieldandphysiologicaltraitsinsalineＧalkalisoil．ChinJRiceSci,２０１４,２８(５):５３４Ｇ５４０．Abstract:ToexploretheeffectsofsoilwaterpotentialatgrainfillingＧmilkystageonriceyieldandphysiologicaltraitsinsalineＧalkalisoil,wemeasuredgra
4、inyield,drymatterproduction,leafphysiologicaltraitsandleafareaundersoilwaterpotentialsof０kPa(WP０),－１５kPa(WP－１５),－３０kPa(WP－３０)andCK(continuouslyflooded)．Theresultsshowedthatyieldofricedifferedsignificantlyunderdifferentsoilwaterpotentials,beingthehighestunderWP０,whilebeingthelowe
5、stunderWP－３０．ComparedwiththeCK,WP－１５andWP－３０,ricegrainyieldunderWP０increasedby４?０３％,１９．９０％and２６．０５％,respectivelyandtheincreased１０００Ｇgrainweightandseedsettingpercentagemaycontributetoitshighergrainyield．TherootdrymatterproductionunderWP０wassignificantlyhigherthanthatunderCKatgrai
6、nfillingＧmilkystage．ThedrymatteraccumulationofrootandabrovegroundpartunderWP０weresignificantlyhigherthanthoseunderCK,WP－１５andWP－３０after１５daysofrewatering．Withthedecreasingsoilwaterpotential,theleafrelativewatercontentandleafareaindexdecreasedwithinsignificantdifference．Theconten
7、tofprolineandelectricalconductivityunderCKweresignificantlylowerthanthoseunderWP０,WP－１５and,WP－３０．ThechlorophyllcontentsshowedatrendofWP０＞CK＞WP－１５＞WP－３０．The１０００Ｇgrainweight,seedsettingpercentage,rootactivity,drymatterproductionandchlorophyllcontentsofriceinsodaalkaliＧsalinesoilin
8、creasedundermoistirrigationatthegrainfillingＧmi
