遮光處理下2個紅花木品種的光合特性比較

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引用格式：.遮光處理下2個紅花檻木品種的光合特性比較[J].湖南農(nóng)業(yè)科學，2025（5）：91-97.DOI：10.16498/j.cnki.hnnykx.2025.005.017

Abstract：Thisstudyaims toinvestigatetheregulatoryefectsofshadingonthephotosyntheticcharacteristicsofLoropetalum chinensevar.rubrum.TwoL.chinensevar.rubrum varieties，XiangnongFendai'andBlackPear'，weretreatedunderfiveading gradients： 0% 30% 50% 70% ，and 90% .The photosynthetic parameters，chlorophyllfluorescence characteristics，and photosynthetic pigmentontentweresystematicallcompared.TheresultsshowedthatshadinghancedthepotentialphotochemicalactivityofP， netphotosytheticatestomatalonductane，andtranspirationrateofthetwvarieties.XiangnongFendai'asmorsesititolight changes，whileBlackPearl'showedstrongeradaptabilitytoghshadingenvironments.Inadition，shadingsigifcantlyceased thecontentofcloropyllachlorophyllbandcarotenoidsinthetwovarieties.Withtheextensionofsadingtie，aighshading rate （50%-90%） wasconducive to chlorophylla accumulation.Inconclusion，shading significantly improves the photosynthetic performanceofXiangnongFendaiadBlackPear'，andthecomprehensivephotosyntheticperformancesoftetwoaietiesuder differentsadingcondonsvaryItissggestedtatadiferentiatedshadingstrategysouldbadoptedintecultivationofL.inense var. rubrum based on variety characteristics.

Key words：Loropetalum chinensevar.rubrum;shading treatment; photosyntheticcharacteristics;photosynthetic pigments; chlorophyllfluorescence parameters

紅花木（Loropetalumchinensevar.rubrumYieh），又稱紅繼木，因葉色艷麗、花形獨特、花期長和適應性強等特點被廣泛應用于園藝及景觀設計。（剩余8208字）