景電灌區(qū)保水劑施用量對甜瓜產(chǎn)量及水分利用效率的影響

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中圖分類號：S652 文獻標志碼：A 文章編號：2097-2172（2025）04-0326-05

doi：10.3969/j.issn.2097-2172.2025.04.007

Effects of Different Water-holding Agent Application Rates on the YieldandWaterUseEfficiencyofMelonsin Jingdian Irrigation Area

GAO Qiuyan1， CHEN Liang23，LIU Bin1，3 （1.Gansu Jingtaichuang Iigation Water Resources Utilization Centre，Jingtai Gansu 7304Oo，China； 2.Gansu Provincial Instituteof AgriculturalEngineeringand Technology，Wuwei Gansu73306，China； 3.Collgeof Horticultural， Gansu Agricultural University，Lanzhou Gansu 73oo7o， China）

Abstract：To investigate theregulatory efectsof water-holding agents on thegrowthand development and water use eficiencyimelonssoastoprovideatheoreticalbasisforthescientificaplicationandpromotionofwater-holdingagents，the efectofdiferentwaterolinggentapplicationates（Okg/a，75kgand9kg/a）onerowhdevelopent，ieldand water-useeficiencyinmelonswere investigatedunderfieldconditionswithmelonasthetestmaterialandnowater-holdingagentas thecontrol （CK）.Resultsshowedthattheaplicationofwater-holdingagentsignificantlypromotedtheelongationof vines， thickeningofstemsandtheincreaseofleafareaindexofmelonsatallfertiltystages.Temelontreatedwith90kg/haofwater conservatorhadtheighestvineelongation，stemtickeningandleafareaindexatallfertilitystages，andthehghestmelonyield and water utilization efficiency，which were 1 1 . 0 % and 2 2 . 8 % significantly higherthan that of CK，respectively.Considering the growthanddevelopmentofmelonplants，yieldandwaterutilizationeficiency，romotingtheapplicationofwaterretainingagentcan beatechnicalsolutionfordroughtandwaterconservationinJingdianIrigationDistrict，andtheoptimumaplicationrateof water retaining agent is

KeyWords：Jingdian Irrigation District； Water-holding agent； Melon； Yield； Water use efficiency

景電灌區(qū)是西北干旱和半干旱區(qū)重要的引黃農(nóng)業(yè)灌區(qū)，具有光熱資源豐富、早晚溫差大等顯著特點，是西北地區(qū)重要的西甜瓜生產(chǎn)基地，但年降水量少且集中、蒸發(fā)量大導(dǎo)致當?shù)剞r(nóng)田土壤水分常年缺乏，農(nóng)業(yè)生產(chǎn)用水主要靠補充灌溉為主，嚴重制約著當?shù)剞r(nóng)業(yè)產(chǎn)業(yè)的可持續(xù)發(fā)展[1]。（剩余6554字）