转光膜对秋延后大棚温光环境调控及辣椒生长生理的影响
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中图分类号：S641.3 文献标志码：A 文章编号：1673-2871（2026）01-169-06
Abstract：Toinvestigatetheregulatoryefectsoflightconversionfilmonthetemperatureandlightenvironmentingeenhouse for late-autumn pepper production in the Dongting-Lakearea，as wellas its efect on pepper growthand physiology， andtoevaluate itsapplicabilityduringhigh-temperature seasons，this studyused thepeppervariety Changla 6O as the experimental material.Two treatments were applied：lightconversion fim（T）andordinaryPO film（CK）.Comparative analyses wereconductedonchanges ingrenhouse temperatureandlightconditions，pepper agronomic traits，and physiologicalindicators.Theresults showed that thelightconversion filmsignificantlyincreased thedailymaximumtemperature inside the greenhouse（peak increase of 6.34∘C） ，reduced the daily maximum light intensityby 53733.71x ，and decreased theaveragedaily humidityby 4.80% .However， there wasno significant change in the average daily temperature， exhibitingatemperaureandlightregulationcharacteristicof peak-temperature-increase withoutaverage-temperature-rise. Coverage with the light conversion film promoted longitudinal fruit development（fruit longitudinal diameter increased by （204号 9.81% ），but due totheofseting effectofhigh-temperaturestressthere was nosignificant improvementinsinglefruit masand yield per plant.In terms of physiologyical mechanisms，light conversion filmcoverage cuased a dramatic increase of 179.07% in leaf malondialdehyde（MDA）content， indicating oxidative damage induced by high-temperature stres，whileCATacitvitydidnotchangesignificantlysuggestinganinadequateresponseoftheantioxidantdefensesystem.This studyreveals that lightconversion films exacerbate heat stressinside the greenhouse during high-temperature seasons，limitingpepperyieldformation.Therefore，itisnotrecommended todirectlyandsolelyapplysuch filmthatsignificantlyelevatepeaktemperaturesduring high-temperatureperiods.Their aplication inhigh-temperaturerequires the integrationofcoolingtechnologies tomitigateheatdamagerisks，providingatheoreticalbasis foroptimizingthegeenhouse cultivation environment for peppers in the region.
Key words：Lightconversion film; Temperatureand light environment; Pepper; Growth physiology;Facilitycultivation; Dongting-Lake area
洞庭湖区作为我国辣椒种植的重要区域，秋延后大棚辣椒因具有填补市场供应空档、经济效益显著的特点，已成为当地农业发展的重点之一，年栽培面积超 3 333.33hm2[1] ；但存在夏季高温多雨、冬季低温寡照的季节性气候波动等问题，这就需要新型设施棚膜通过调控环境实现作物高效生产。（剩余6955字）
