水氮调控对张掖寒旱区温室陇椒3号辣椒光合特性·产量和品质的影响

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中图分类号S641.3文献标识码A文章编号 0517-6611（2026）07-0141-04doi：10.3969/j.issn.0517-6611. 2026. 07. 025

AbstractInordertoobtainsuitablewaterandntrogendosageindicatorsforgreenhousepepperproductionincoldandaridareas，thepeppervarietyLongoNo3susdsthstateialndheevelsofgationdnrgenlicationweetodef diferentwaterandnitrogentratmentsonteotosyteticcaracteristics，eld，adqualityfpepper.Teesultsshowedtatdotinga water-nitrogen treatment combination with an irrigation amount of 65% 80% of the field capacity and a nitrogen application rate of （204 372.90kg/hm2 ，pepperplants maintainedstrong photosynthesis，withthehighestvaluesof photosyntheticrate，transpirationrate，intercellular CO2 ，and stomatal conductance，which were 16.58 μmol/（m²·s），8.63μmol/（m²·s），265.00 mmol/（m²·s），and 356.00mmol/（m2⋅s） ，respectively.The numerical indicators of pepper plant height，stem thickness，number of fruits per plant，yield per plant，and yield per hectare were also the highest，with values of 112.19cm ， 1.46cm ，26.47， 1.46kg ，and ，respectively， whichweresignificantlyhigherthantoseofotertreatents;uderW2treatment，thequalityindicatosofpeppersalsoshowedtebest performance.TecomprehesiveexperimentalsultsidicatethattheuseofawaterntrogncombiationcomposedofWN2canprootethe growthandpotosytsisofchilipeppersndsignificantlyimproethirieldndualityeseesultsprovideteoreticalgdaneforchieving high-yield and high-quality production of peppers in cold and arid regions.

KeyWordsWater and nitrogen regulation;Greenhouse incoldandarid regions;Pepper;Photosynthesis;Yield;Quality

张掖市地处河西走廊中部，年降水量仅 104～354mm ，蒸发量高达 1625～2280mm ，昼夜温差大，年平均气温为7.7∘C，∃10∘C 的活动积温 2980∘C ，是典型的寒旱农业区。（剩余6198字）