天津市平衡施肥推廣模式的研究.pdf

1、y77‘654分類號(hào)：密級(jí)：絮嚼差≮夭等學(xué)位論文單位代碼；10019學(xué)號(hào)：288229天津市平衡施肥推廣模式的研究StudyonExtensionPatternofBalancedFertilizationinTianjin研究指導(dǎo)教師：王望鏨熬撞合作指導(dǎo)教師：壘盞摳班宣雖申請(qǐng)學(xué)位類別：壅些燕亡亟專業(yè)名稱：挫揎些研究方向：盛些掛亡所在學(xué)院：厶塞生筮屋堂院2005年2月ABSTRACTTherearedecisiverolesofchem

2、icalfertilizerintheagriculturalproductioninChinaSo，thereisveryimportantsignificanceofbalancedfertilizationandscientificfertilizationtothesustainabledevelopmentofChinaagricultureTakingtheresearchachievementsofdynamicbalan

3、cedfertilizationformulaofwinterwheatandsummercornasthebackgroundandextensiontarget，throughtheextensionpracticesforseveralcontinuousyears，thepresentpatternsofbalancedfertilizationextensioninTianjinalesummarizedA1so，theben

4、efitsandextensionprospectiveofbalancedfertilization，thetechnicalcharacteristicsofbalancedfertilization，theadvantagesanddisadvantagesintheextensionprocessarestudiedBasedonthose，thesixextensionpatternsareanalyzeddeeplyTher

5、esultsareasbellowsInthenumerousextensionpatterns，thegovernmentleadingextensionpatternisthestrongest，quickerandtheextensionareaislargerbuttheextensionsystemshouldbefurtherstrengthened，andthepolicysupportsshouldbegivenbyth

6、egovernmentTheextensionpatternwiththeresearchinstitutesasthemainbodyisstrictandscientific，andiswelcomedbythepeasants，buttheextensionstrengthisweakTheextensionpatternwiththecompaniesasthemainbodyhastheadvantageintheextens

7、ionareaandisanewpattern，buttheserviceconsciousnessoftheagriculturalfertilizationshouldbestrengthenedTheextensionpatternwiththesupplyandmarketingcooperativeasthemainbodyhastheadvantageofretailingfertilizers，butthetechnica

8、ltrainingtothevocationalstaffshouldbestrengthenedIntheextensionpatternwiththechainradiationasthemainbodytheactivityofthepeasantsishigherSo，theextensionpatternwiththeresearchinstitutecompanyextensionpeasantasthemainbodyha

9、stheadvanlagesbothinextensionareaandtheactivityofthepeasants，andalsocallcombinethebenefitsoftheseveralunitsandlearnfromothers’strongpointstooffsetone’sownweaknesstopromotethedevelopmentofbalancedfertilizationtogetherItal

10、soshowsthatthecomplexextensionpatternoftheresearchinstitutecompanyexlensionpeasantisthesuitablepatternofbalancedfertilizationextensionThroughtheanalysisandtheresearch，severalsuggestionsonthedevelopmentofbalancedfertiliza

11、tionareputforwardinordertoprovidethetheoreticalbasisandpracticalguidanceforthedevelopmentofbalancedfertilizationKeywords：balancedfertilizationofcroprotationfieldofwinterwheatandsummercorn，extensionpattern，complexextensio