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1、中國(guó)水稻科學(xué)(ChinJRiceSci),2013,27(2):209-212http://www.ricesci.cnDOI:10.3969/j.issn.1001-7216.2013.02.015209水分管理對(duì)免耕拋秧水稻根系生長(zhǎng)及產(chǎn)量的影響秦華東1,2江立庚1,*肖巧珍1徐世宏3(1廣西大學(xué)作物栽培學(xué)與耕作學(xué)重點(diǎn)實(shí)驗(yàn)室,廣西南寧530005;2廣西大學(xué)圖書館,廣西南寧530005;3廣西農(nóng)業(yè)技術(shù)推廣總站,廣西南寧530022;*通訊聯(lián)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秦華東,江立庚,肖巧珍,等.水分管理對(duì)免耕拋秧水稻根系生長(zhǎng)及產(chǎn)量的影響.中國(guó)水稻科學(xué),2013,27(2):20
7、9-212.摘要:研究了水分管理對(duì)免耕水稻根系生長(zhǎng)和產(chǎn)量的影響。結(jié)果表明,干濕交替灌溉對(duì)根系的伸長(zhǎng)、生長(zhǎng)、生理及分布具有較大影響,水稻各生育期干濕交替灌溉處理水稻單株根干質(zhì)量、單株生物量、根半徑、根表面積、總根數(shù)、根系活力、超氧化物歧化酶活性均顯著高于淹水淹灌。干濕交替灌溉處理實(shí)收產(chǎn)量顯著高于淹水淹灌,增產(chǎn)主要因子是有效穗數(shù)、每穗粒數(shù)和結(jié)實(shí)率。灌漿盛期干濕交替灌溉處理單株生物量、根半徑、根表面積、
