蘋果樹冠微氣候與果實品質(zhì)關(guān)系研究.pdf

1、中國農(nóng)業(yè)科學院碩士學位論文蘋果樹冠微氣候與果實品質(zhì)關(guān)系研究姓名：孫志鴻申請學位級別：碩士專業(yè)：果樹學指導教師：楊朝選孫忠富20050601AbstractToerelationshipbetweenthedynamicdistributionofthemicroclimate(includingradiation，temperatureandrelativehumidity)intreecanopyandthetypesofbranch

2、esandleavesaswellasthefruitqualitywasstudiedbyusing12yearRedFujiappleorchardtrainedasStandardopencentershapeTheresultswereasfollows(1)TheSLImofbranchesper6667mzwas65，000andtheproportionofthelongbranches，middlebranchandsp

3、urwas12：14：74Theaverageannuallighttransmittancethroughfleecanopywasabout045～055Thesectionswheretherelativesolarradiationintensityweremorethan30％accountfor80％ofthetreevolumeThedistributionofthefruitswasrelativelysymmetric

4、alandthepercentageofhighqualityfruitwasmorethan80％(2)ThetemperaturedifferencewasobviouswithindifferentS￡asOnSandindifferentpositionsofthecanopyThegeneraltrendwasthatthetemperatureincreasedgraduallyfromthebottomtothetopan

5、dfromtheinnertotheonteFofthecanopyInMayandJenethemaximumtemperaturedifferencewasabout03～08Wbetweenthetopandthebottomofthecanopy，andbetweentheouterandinneroftheeanopyThetemperaturedifferencewasabout0，5～25℃duringthemiddlep

6、eriodoffruitgrowingandwas05～15“Cduringthefruitmaturingperiod(3)TherelativehumiditywithinthecanopyvariedobviouslyItwashigherinthebottomandinnerthaninthetopandouterinthecanopyThedifferenceofrelativehumiditywithindifferentp

7、artofthecanopywashigherintheperiodoffruitexpansionthanintheperiodofcanopyformationandfruitharvest(4)Theregressionequatiormweredevelopedbetweenthemicroelimatefactot5ofthetreecanopyandthequantityoftheleafandbranchandthefru

8、itqualitythroughmultivariatestatisticalanalysisThemathematicmodelwasbuilttopredicttherelativesolarradiationintensitydistribution，temperatureandtherelativehumidityinsidethecanopythroughthequantityanddistributionoftheleave

9、sandbranchesinthecanopyalloptimalschemecouldbemadebetweenthemieroelimateofcanopyandfruitqualityandfurthermore，acomprehensivecombinationwasmadeamongthedistributionandthequantityofthebranchesandleafareawiththetreecanopymic

10、roclimateandfruitqualitythroughthisstudy(5)ThequalityoffruithadstrongandpositiveenrrelationwiththerelativeradiationintensitywithinthecanopyThebestiangeofrelativeradiationintensityforshlglefruitweightiswithin3090％，inwhich