資源描述：
《機(jī)插密度與氮肥運(yùn)籌對(duì)中嘉早17產(chǎn)量形成及氮肥利用率的影響》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、中國(guó)水稻科學(xué)(ChinJRiceSci),２０１５,２９(６):６２８－６３６http://www．ricesci．cn６２８DOI:１０．３９６９/ji．ssn．１００１Ｇ７２１６．２０１５．０６．００９機(jī)插密度與氮肥運(yùn)籌對(duì)中嘉早１７產(chǎn)量形成及氮肥利用率的影響陳佳娜謝小兵伍丹丹曹放波單雙呂高偉李志斌鄒應(yīng)斌?(湖南農(nóng)業(yè)大學(xué)農(nóng)學(xué)院,長(zhǎng)沙４１０１２８;?通迅聯(lián)系人,EＧmail:ybzou１２３＠１２６．com)EffectsofNitrogenApplicationandMechanicalTransplantingDen
2、sityonYieldFormationandNitrogenUseEfficiencyofConventionalRiceZhongjiazao１７CHENJiaＧna,XIEXiaoＧbing,WUDanＧdan,CAOFangＧbo,SHANShuangＧlv,GAOWei,LIZhiＧbin,ZOUYingＧbin?(CollegeofAgronomy,HunanAgriculturalUniversity,Changsha４１０１２８,China;?Correspondingauthor,EＧmail:ybzo
3、u１２３＠１２６c．om)CHENJiana,XIEXiaobing,WUDandan,etal．EffectsofnitrogenapplicationandmechanicaltransplantingdensityonyieldformationandnitrogenuseefficiencyofconventionalriceZhongjiazao１７．ChinJRiceSci,２０１５,２９(６):６２８Ｇ６３６．Abstract:Aimingattheslowdevelopmentofricemechanic
4、altransplantingintheYangtzeRiverValley,weexploredtheeffectsofmechanicaltransplantingdensitiesandnitrogenapplicationonyieldformationandnitrogenuseefficiency(NRE)inafieldexperimentwiththeconventionalvarietyZhongjiazao１７asmaterial．Theresultsshowedthatthegrain２)yield
5、didn’tsignificantlyincreasewiththeincreasinglevelsoftransplantingdensity．Atthehighdensity(３６．４hill/m２２andhighnitrogenrates(１７５．５kg/hminearlyseason,１８９kg/hminlateseason)thegrainyieldmaximized,being２２７?８４t/hminearlyseasonand９．１０t/hminlateseason,whilethedifferencewa
6、snotsignificantcompariedwithhigh２２transplantingdensityplusmediumnitrogenrate(１１０kg/hminearlyseason,１４０kg/hminlateseason)．Meanwhile,theinteractionbetweenthedensityandNapplicationwasnotsignificant．NREdeclinedastheNapplicationlevelincreased,whileitimprovedasthedensi
7、tyincreased．NrecoveryefficiencyatthemediumNlevelwas１３．２６％higherontheaveragecomparedwiththehighNlevel．AndNrecoveryefficiencyatthehighdensityincreasedby１７?５３％comparedwiththelowdensity．Asaresult,athightransplantingdensityandlownitrogenapplicationlevel,highyieldwasac
8、hievedbyincreasingeffectivepaniclenumberperunitarea,andNrecoveryefficienlywasimproved．ItisakeytechnologyforthehighＧefficiencyandhighＧyieldingcultivationofmecha
