滴灌水分亏缺对猕猴桃生育前期光合特性的影响

【目的】探究滴灌水分亏缺对南方季节性干旱区猕猴桃生育前期光合特性的调控效应,为南方季节性干旱区猕猴桃节水高产种植提供理论依据。【方法】以9 a生“金艳”猕猴桃为研究试材,以充分灌溉为对照(CK),分别在抽梢展叶期(I)、开花坐果期(II)设置轻度、中度、偏重度及重度4种亏缺水平(记为LD、MD2、MD1及SD,灌水量分别为CK的85%、75%、65%、55%),分析了滴灌水分亏缺对猕猴桃生育前期叶片光合特性的影响。【结果】水分亏缺显著降低猕猴桃生育前期叶片净光合速率(Pn)、蒸腾速率(Tr)和气孔导度(gs),且降幅均随亏水度加重而增大,但Pn降幅小于Tr和gs;与CK相比,I-MD1处理和I...

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Published inGuanʻgai paishui xuebao Vol. 39; no. 11; pp. 19 - 28
Main Authors ZHENG Shunsheng, CUI Ningbo, ZHAO, Lu, ZHANG, Yixuan, GONG Daozhi, HU Xiaotao, Yu, FENG
Format Journal Article
LanguageChinese
English
Published Xinxiang City Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage 01.11.2020
西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌 712100%中国农业科学院农业环境与可持续发展研究所作物高效用水与抗灾减损国家工程实验室,北京 100081%西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌 712100
四川大学水力学与山区河流开发保护国家重点实验室,成都 610065%四川大学水力学与山区河流开发保护国家重点实验室,成都 610065
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ISSN1672-3317
DOI10.13522/j.cnki.ggps.2020105

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Abstract 【目的】探究滴灌水分亏缺对南方季节性干旱区猕猴桃生育前期光合特性的调控效应,为南方季节性干旱区猕猴桃节水高产种植提供理论依据。【方法】以9 a生“金艳”猕猴桃为研究试材,以充分灌溉为对照(CK),分别在抽梢展叶期(I)、开花坐果期(II)设置轻度、中度、偏重度及重度4种亏缺水平(记为LD、MD2、MD1及SD,灌水量分别为CK的85%、75%、65%、55%),分析了滴灌水分亏缺对猕猴桃生育前期叶片光合特性的影响。【结果】水分亏缺显著降低猕猴桃生育前期叶片净光合速率(Pn)、蒸腾速率(Tr)和气孔导度(gs),且降幅均随亏水度加重而增大,但Pn降幅小于Tr和gs;与CK相比,I-MD1处理和II-MD2处理的Pn分别降低16.3%和6.5%,但叶片瞬时水分利用效率(WUEi)、叶片内在水分利用效率(WUEn)分别较CK提高7.7%、15.6%和8.1%、18.2%(P<0.05);水分亏缺后复水显著提高猕猴桃叶片Pn,其中I-LD处理复水后Pn较CK提高4.2%(P<0.05),达到5.94 μmol/(m2·s),出现超补偿效应;Tr、gs与水汽压差(Δe)均呈二次曲线关系,Δe小于25×102 Pa时,Tr随Δe增大显著增大,Δe大于17×102 Pa时,gs随Δe增大而明显降低。【结论】I-LD处理可在抽梢展叶期节水15%的情况下使猕猴桃叶片Pn提高4.2%,II-MD2处理可节约25%开花坐果期灌溉用水且使猕猴桃WUEi、WUEn分别提高8.1%、18.2%,是南方季节性干旱区猕猴桃生育前期适宜的滴灌水分调控模式。
AbstractList 【目的】探究滴灌水分亏缺对南方季节性干旱区猕猴桃生育前期光合特性的调控效应,为南方季节性干旱区猕猴桃节水高产种植提供理论依据。【方法】以9 a生“金艳”猕猴桃为研究试材,以充分灌溉为对照(CK),分别在抽梢展叶期(I)、开花坐果期(II)设置轻度、中度、偏重度及重度4种亏缺水平(记为LD、MD2、MD1及SD,灌水量分别为CK的85%、75%、65%、55%),分析了滴灌水分亏缺对猕猴桃生育前期叶片光合特性的影响。【结果】水分亏缺显著降低猕猴桃生育前期叶片净光合速率(Pn)、蒸腾速率(Tr)和气孔导度(gs),且降幅均随亏水度加重而增大,但Pn降幅小于Tr和gs;与CK相比,I-MD1处理和II-MD2处理的Pn分别降低16.3%和6.5%,但叶片瞬时水分利用效率(WUEi)、叶片内在水分利用效率(WUEn)分别较CK提高7.7%、15.6%和8.1%、18.2%(P<0.05);水分亏缺后复水显著提高猕猴桃叶片Pn,其中I-LD处理复水后Pn较CK提高4.2%(P<0.05),达到5.94 μmol/(m2·s),出现超补偿效应;Tr、gs与水汽压差(Δe)均呈二次曲线关系,Δe小于25×102 Pa时,Tr随Δe增大显著增大,Δe大于17×102 Pa时,gs随Δe增大而明显降低。【结论】I-LD处理可在抽梢展叶期节水15%的情况下使猕猴桃叶片Pn提高4.2%,II-MD2处理可节约25%开花坐果期灌溉用水且使猕猴桃WUEi、WUEn分别提高8.1%、18.2%,是南方季节性干旱区猕猴桃生育前期适宜的滴灌水分调控模式。
S275.6; [目的]探究滴灌水分亏缺对南方季节性干旱区猕猴桃生育前期光合特性的调控效应,为南方季节性干旱区猕猴桃节水高产种植提供理论依据.[方法]以9 a生"金艳"猕猴桃为研究试材,以充分灌溉为对照(CK),分别在抽梢展叶期(I)、开花坐果期(II)设置轻度、中度、偏重度及重度4种亏缺水平(记为LD、MD2、MD1及SD,灌水量分别为CK的85%、75%、65%、55%),分析了滴灌水分亏缺对猕猴桃生育前期叶片光合特性的影响.[结果]水分亏缺显著降低猕猴桃生育前期叶片净光合速率(Pn)、蒸腾速率(Tr)和气孔导度(gs),且降幅均随亏水度加重而增大,但P n降幅小于T r和g s;与CK相比,I-MD1处理和II-MD2处理的P n分别降低16.3%和6.5%,但叶片瞬时水分利用效率(WUE i)、叶片内在水分利用效率(WUE n)分别较CK提高7.7%、15.6%和8.1%、18.2%(P<0.05);水分亏缺后复水显著提高猕猴桃叶片P n,其中I-LD处理复水后P n较CK提高4.2%(P<0.05),达到5.94μmol/(m2·s),出现超补偿效应;Tr、gs与水汽压差(Δe)均呈二次曲线关系,Δe小于25×102 Pa时,Tr随Δe增大显著增大,Δe大于17×102 Pa时,gs随Δe增大而明显降低.[结论]I-LD处理可在抽梢展叶期节水15%的情况下使猕猴桃叶片P n提高4.2%,II-MD2处理可节约25%开花坐果期灌溉用水且使猕猴桃WUE i、WUE n分别提高8.1%、18.2%,是南方季节性干旱区猕猴桃生育前期适宜的滴灌水分调控模式.
Author HU Xiaotao
Yu, FENG
ZHENG Shunsheng
ZHANG, Yixuan
GONG Daozhi
CUI Ningbo
ZHAO, Lu
AuthorAffiliation 四川大学水力学与山区河流开发保护国家重点实验室,成都 610065%四川大学水力学与山区河流开发保护国家重点实验室,成都 610065;西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌 712100%中国农业科学院农业环境与可持续发展研究所作物高效用水与抗灾减损国家工程实验室,北京 100081%西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌 712100
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Keywords 水分亏缺
水分利用效率
光合特性
猕猴桃
滴灌
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English
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西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌 712100%中国农业科学院农业环境与可持续发展研究所作物高效用水与抗灾减损国家工程实验室,北京 100081%西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌 712100
四川大学水力学与山区河流开发保护国家重点实验室,成都 610065%四川大学水力学与山区河流开发保护国家重点实验室,成都 610065
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Snippet 【目的】探究滴灌水分亏缺对南方季节性干旱区猕猴桃生育前期光合特性的调控效应,为南方季节性干旱区猕猴桃节水高产种植提供理论依据。【方法】以9...
S275.6; [目的]探究滴灌水分亏缺对南方季节性干旱区猕猴桃生育前期光合特性的调控效应,为南方季节性干旱区猕猴桃节水高产种植提供理论依据.[方法]以9...
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SubjectTerms Actinidia
Aridity
Drip irrigation
Drying
Flowering
Fruit set
Fruits
Growth stage
Irrigation
Kiwifruit
Leaves
Photosynthesis
Stomata
Stomatal conductance
Transpiration
Vapor pressure
Vapors
Water conservation
Water deficit
Water use
Water use efficiency
Title 滴灌水分亏缺对猕猴桃生育前期光合特性的影响
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