锰和亚铁喷施对石门早硕板栗光合特性的影响-论文.pdf

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1、生态与农村环境学报2014，30(1)：119-123JournalofEcologyandRuralEnvironment锰和亚铁喷施对石门早硕板栗光合特性的影响陈锦璞，范伟国，杨洪强，毕润霞，杨建强(山农农业大学园艺科学与工程学院作物生物学国家重点实验室，山东泰安271018)摘要：以3a生石门早硕板栗为试材，研究叶面分别喷施W=0．3％的硫酸锰和硫酸亚铁溶液对其叶光合特性的影响。结果表明，喷施硫酸锰和硫酸亚铁2种溶液均明显提高了板栗幼树叶片的叶绿素含量、净光合速率和水分利用率等光合指标，硫酸亚铁处理幼树叶片的气孔导度和蒸腾速率也显著高于对照。分析各光合指标的Et变化发现，

2、板栗幼树叶片的净光合速率呈抛物线状，13：00时达到高峰值；对照幼树叶片的气孔导度及蒸腾速率值呈“M”型，而2种溶液处理均呈抛物线状。上述结果表明板栗幼树叶面喷施锰和亚铁溶液有助于增强其光合能力。关键词：板栗；锰；铁；光合；叶面喷施中图分类号：$664．2文献标志码：A文章编号：1673—4831(2014)01—0119—05EffectofFoliageApplicationofMnSO4andFeSO4onPhotosynthesisofShimenzaoshuoChestnut．CHENJin-pu，FANWei—guo，YANG舶-qiang，BIRun—xia，YA

3、NGJian—qiang(StateKeyLaboratoryofCropBiology，CollegeofHorti—cultureScienceandEngineering，ShandongAgriculturalUniversity，Taian271018，China)Abstract：Anexperimentoffoliageapplicationof0．3％MnSO4or0．3％FeSO4solutiontoShimenzaoshuochestnuttrees，three—yearold，wasconductedtoexploreefectofthefoliageap

4、plicationonphotosynthesisofthechestnutleaves．Photo—syntheticindexes，suchaschlorophyllcontent，photosyntheticrate，transpirationrate，stomata]conductance，intercellularCO2concentration，wateruseefficiency(WUE)andstomata]limitationweremeasuredbetween10：00amand11：00amwithSPAD一502chlorophyllmeterandC

5、IRAS-2photosyntheticinstrumentonsunnydays．Resultsshowthattheapplicationofeitherofthesolutionsincreasedchlorophyllcontent，photosyntheticrateandWUEofthechestnutleavesandtheappli-cationofFeSO4solutionalsoimprovedstomatalconductanceandtranspirationrateofthetrees．Analysisofthediurnalvail—ationofp

6、hotosyntheticindicesrevealsthatthenetphotosyntheticrateoftheleavesofyoungchestnuttreesvariedfollowingacurveofparabolicshapewithapeakappearingat1：00pm．InCK，thestomatalconductanceandthetranspirationrateoftheyoungchestnutleavesdisplayedacurveof“M”shape。whileinthetreatmentsoffoliageapplication，t

7、heydidacurveofparabolicshape，indicatingthatthefoliageapplicationofthesolutionsisconducivetoenhancingphotosyntheticcapacityoftheyoungchestnuttreeleaves．Keywords：chestnut；Mn；Fe；photosynthesis；foliageapplication光合作用是果树干物质的主要来源，光合能力为试材，探讨叶面喷施硫酸锰和硫酸亚铁溶液