景电灌区保水剂施用量对甜瓜产量及水分利用效率的影响

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中图分类号：S652 文献标志码：A 文章编号：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

景电灌区是西北干旱和半干旱区重要的引黄农业灌区，具有光热资源丰富、早晚温差大等显著特点，是西北地区重要的西甜瓜生产基地，但年降水量少且集中、蒸发量大导致当地农田土壤水分常年缺乏，农业生产用水主要靠补充灌溉为主，严重制约着当地农业产业的可持续发展[1]。（剩余6554字）