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1、中國(guó)油料作物學(xué)報(bào)2014,36(1):066—070ChineseJournalofOilCropSciencesdoi:10.7505/j.issn.1007—9084.2014.O1.010密度對(duì)不同類型大豆葉部性狀的影響鄭偉,謝甫綈,郭泰,王志新,李燦東,張振宇,吳秀紅,張茂明,王慶勝(1.沈陽(yáng)農(nóng)業(yè)大學(xué)農(nóng)學(xué)院,遼寧沈陽(yáng),110866;2.黑龍江省農(nóng)科院佳木斯分院,黑龍江佳木斯,154007)摘要:以耐密植品種墾豐16和普通品種綏農(nóng)14為材料,設(shè)置不同種植密度小區(qū)試驗(yàn),研究密度對(duì)不同耐密性大豆葉部性狀的影響。結(jié)果表明:耐密植品種墾豐16產(chǎn)量高于普通
2、品種綏農(nóng)14,特別是在高密度條件下差異達(dá)到極顯著水平;墾豐16隨著密度增加光合速率和水分利用效率下降速度較綏農(nóng)14慢;在栽培密度變化時(shí)葉柄長(zhǎng)度變化沒(méi)有綏農(nóng)14明顯,在高密度條件下冠層更加疏朗,有利于群體通風(fēng)透光;綏農(nóng)l4隨著密度增大,葉色值的峰值提前,而墾豐16的葉色值出現(xiàn)時(shí)期沒(méi)有明顯變化,且生育后期耐密品種的葉色值高于普通品種,可見(jiàn)葉色值峰值變化小,后期葉片持綠性強(qiáng)是耐密植品種的一個(gè)重要特性;墾豐16的葉形指數(shù)在3種密度條件下都高于綏農(nóng)14,更有利于通風(fēng)透光。從3種密度條件下產(chǎn)量、光合速率、水分利用效率、葉色值、葉形指數(shù)和葉柄長(zhǎng)度的變化規(guī)律可以看出墾
3、豐16更適于密植栽培。關(guān)鍵詞:大豆;耐密性;光合特性中圖分類號(hào):$565.101文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1007—9084(2014)O1—0066—05EfectofdensityfordiferenttypesofleaftraitsonsoybeanZHENGWei,XIEFu—ti,GUOTai,WANGZhi—xin,LICan—dong,ZHANGZhen—yu,WUXiu—hong,ZHANGMao—ming,WangQing—sheng(1.ShenyangAgriculturalUnive~ity,Shenyang110866,Chi
4、na;2.JiamusiBranchAcademyofHeilongjiangAcademyofAgriculturalSciences,Jiamttsi154007,China)Abstract:Twosoybeancuhivarsofdifferentdensity—tolerancewereselectedasmaterialindifferentplantingdensityconditions,andtheeffectofdensityfordifferenttypesofleaftraitswerestudied.Theresultssho
5、wedthat:theyieldofdensity—tolerancecuhivarKenfeng16wasgreaterthannondensity——tolerancecultivarSuinong14es。peeiallyinhighdensitycondition.Thedifferencereachedasignificantleve1.Thedensi~一tolerancecuhivarKen—feng16wasslowerthanSuinong14onreducingrateofphotosyntheticandwateruseefici
6、encywiththeincreasingdensity.ThevariationofpetiolelengthofKenfeng16wasnotasgreatasSuinong14withthevariationofplantingdensity;andinhighdensitycanopy,Kenfeng16hadfewerleavesinlowerpartoftheplantwhichwasbeneficialtoventilationandlighteficiency.Alongwiththeincreaseddensity,thepeakva
7、lueofleafcolorappearedearlierinSuinong14,butnosignificantchangeonKenfeng16.TheleafcolorvaluesofKenfeng16washigherthanthecorn。mOBvarietiesatlategrowthstage.Thesmallchangesofleafcolorpeakvalueandthestaying—greenabilityoflateleafwasanimportantcharacteristicsofdensity—tolerancevarie
8、ties.Inthreedifferentdensityconditions,theleafi