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1、廣西農(nóng)業(yè)科學(xué)2010,41(3):244-247GI埔ngxiAgricdturalSciences鎂、硼對烤煙生長發(fā)育與產(chǎn)質(zhì)量的影響馮紅柳-,劉永賢",鄭希s,張懷革1,曾艷2(1南丹縣農(nóng)業(yè)局。廣西南丹547200;2廣西農(nóng)業(yè)科學(xué)院農(nóng)業(yè)資源與環(huán)境研究所,南寧530007;3廣西區(qū)農(nóng)業(yè)技術(shù)推廣總站.南寧530022)摘要:以云煙85為試材,通過大田試驗(yàn)研究鎂、硼對烤煙生長發(fā)育和產(chǎn)質(zhì)量的影響。結(jié)果表明:與0Pr(推薦施肥)處理相比,缺硼處理烤煙移栽后各生育期推遲3~6d不等,打頂株高、節(jié)距、莖圍、最大
2、腰葉的長和寬分別降低4.10%、12.67%、13.33%、16.71%和15.57%,根系深度、根系幅度、l級分枝根數(shù)、2級分枝根數(shù)分別降低33.33%、11.34%、加.00%、13.51%和31.3l%;缺鎂處理烤煙的生育期、生長性狀、根系指標(biāo)等與0frr處理相差不大,但經(jīng)濟(jì)產(chǎn)量與產(chǎn)值明顯降低。說明缺硼會導(dǎo)致烤煙長勢差,生育期延遲,根系生長受阻,產(chǎn)量低、品質(zhì)差,經(jīng)濟(jì)效益降低。因此,南方酸性土壤區(qū)發(fā)展烤煙生產(chǎn),應(yīng)合理施用鎂、硼肥,以促進(jìn)烤煙生長發(fā)育,提高產(chǎn)量和產(chǎn)值。關(guān)鍵詞:烤煙;鎂;硼;生長發(fā)育
3、;產(chǎn)量;質(zhì)量中圖分類號:$572.062文獻(xiàn)標(biāo)識碼:A文章編號:1002—8161(2010)03-024伽4Effectsofmagnesiumandboronfertilizersongrowth,yieldandqualityofflue-curedtobaccoFENGHong-liul,LIUYong—xian”,ZHENGXi3,ZHANGHuai-gel,ZENGYan2(1AgricultureBureauofNandanCounty,Nandan,Guangxi547200,Chi
4、na;2AgriculturalResourcesandEnvironmentResearchInstitute,GuangxiAcademyofA卵culturalSciences,Nanning530007,China;3GuangxiGeneralStationofAgriculturalTechnologyExtension,N枷ing530022,China)Abstracts:ThepresentexperimentWasconductedtostudytheeffectsofmagne
5、siumandboronfertilizersongrowthandyieldofflue-curedtobaccounderfieldconditionsinNandanCounty,Guangxi.Theflue—curedtobaccovarietyYunyan85wasused夠materialandappliedwiththreefertilizertreatments,v/z.,magnesiumdeficiency,borondeficiencyandrec—ommendationfe
6、rtilization(ammoniumsulphate@214.2kg/ha.calciumnitrate@119.9kg/ha,potassiumnitrate@199.9kg/ha,potassiumsulphate@362.Okg/ha,calciummagnesiumphosphatefertilizer@1000.Okg/ha,magnesiumsulfate@37.5kg/ha,zincsulfate@22.5kg/ha,borax@15.0ks/ha).Theborondeficie
7、ncytreatmentdecreasedtheplantheiSht,nodelength,stemdiameter,lengthandwidthofthelargestmiddleleafofplantby4.10%,12.67%。13.33%,16.71%and15.57%,respective·ly,andtherootdepth,rootingextensionrange,rootnumberofthefirstbranchandthesecondbranchandrootdryweigh
8、tby33.33%,“.34%,40.00%,l3.5l%and31.31%,respectively.Nosignificantdifferencesregardinggrowthanddevelop-mentstagesandrootsystemindiceshavebeenobservedbetweenmagnesiumdeficiencyandrecommendedfertihzation,whiletheeconomicyieldandOUtputoftob