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1、中国水稻科学(ChinJRiceSci),2013,27(2):209-212http://www.ricesci.cnDOI:10.3969/j.issn.1001-7216.2013.02.015209水分管理对免耕抛秧水稻根系生长及产量的影响秦华东1,2江立庚1,*肖巧珍1徐世宏3(1广西大学作物栽培学与耕作学重点实验室,广西南宁530005;2广西大学图书馆,广西南宁530005;3广西农业技术推广总站,广西南宁530022;*通讯联系人,E-mail:jiang@gxu.edu.cn)EffectofMoistureManagementonRiceRootGrowthandRiceG
2、rainYieldatDifferentGrowthStagesunderNoTillageQINHua-dong1,2,JIANGLi-geng1,*,XIAOQiao-zhen1,XUShi-hong3(1KeyLaboratoryofCropCultivationandFarmingSystemofGuangxiUniversity,Nanning530005,China;2GuangxiUniversityLibrar-y,Nanning530005,China;3GuangxiAgriculturalTechnologyExtensionGeneralStation,Nanning5
3、30022,China;*Correspondingau-thor,E-mail:jiang@gxu.edu.cn)QINHuadong,JIANGLigeng,XIAOQiaozhen,etal.Effectofmoisturemanagementonricerootgrowthandricegrainyieldatdifferentgrowthstagesundernotillage.ChinJRiceSci,2013,27(2):209-212.Abstract:Theeffectofdifferentmoisturemanagementmodesonrootgrowthandriceg
4、rainyieldundernotillagewasstudied.Theresultsshowedthatdry-wetalternateirrigationhadanobviousinfluenceonricegrainyield,ricerootgrowth,rootlengthandphysiology.Thericeshootdryweightandbiomassperplant,rootradius,rootarea,rootnumber,rootactivityandsupperoxidedismutase(SOD)activityunderdry-wetalternateirr
5、igationweresignificantlyhigherthanthoseunderfloodedirrigation.Dry-wetalternateirrigationsignificantlyincreasedricegrainyield,whichresultedfromincreasedeffectivepaniclenumber,spikeletnumberperpanicleandseedsettingrate,comparedwithfloodedirrigation.Thebiomassperplant,rootradins,rootarea,rootnumberandS
6、ODactivityunderdry-wetalter-nateirrigationweresignificantlyhigherthanthoseunderwettingirrigation.Therewerenosignificantdifferenceinricegrainyieldbetweenthetwotreatments.Keywords:notillagerice;moisture;rootgrowth;yield;dry-watalternateirrigation秦华东,江立庚,肖巧珍,等.水分管理对免耕抛秧水稻根系生长及产量的影响.中国水稻科学,2013,27(2):20
7、9-212.摘要:研究了水分管理对免耕水稻根系生长和产量的影响。结果表明,干湿交替灌溉对根系的伸长、生长、生理及分布具有较大影响,水稻各生育期干湿交替灌溉处理水稻单株根干质量、单株生物量、根半径、根表面积、总根数、根系活力、超氧化物歧化酶活性均显著高于淹水淹灌。干湿交替灌溉处理实收产量显著高于淹水淹灌,增产主要因子是有效穗数、每穗粒数和结实率。灌浆盛期干湿交替灌溉处理单株生物量、根半径、根表面积、
