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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