Abstract: This paper uses quality improved pumpkin‘Jingxinzhen No.5’and stress resistance enhanced Cucurbita ficifolia as rootstock,and cucumber(Cucumis sativus L.)cultivar‘Jinyou No.35’as scion.Under single-stock and double-stock conditions in greenhouse,the plant growth,water and fertilizer utilization efficiency,yield and quality of these 2 different grafted cucumbers were analyzed and compared.The results showed that the plant height,stem diameter,leaf numbers,the largest leaf areas,chlorophyll and carotenoid contents of double-stocked plants were significantly increased;the water use efficiency and contents of uptake N，P，K，Ca,Mg of grafted plants were remarkably higher than those of own-root plants.The yield and fruit number per plant,the single fruit quality of double-stock were significantly higher than‘Jingxin No.5’and own-root treatments.The single-stock increased the fruit stalk length,while double-stock relieved this tendency.Double-stock could significantly increase solution sugar content.The VC contents and sugar-acid ratio were also higher than that of C.ficifolia and own-root treatments.In term of the first female flower node,root activity,fruit length,fruit width,L/D index,and moisture content,graft treatment exerted no effect on them.The above results demonstrated that double-stock possessed characteristics of‘Jingxin No.5’and C.ficifolia,promoted water and fertilizer absorption,and could improve plant growth vigor,yield and quality.So double-stock was the best grafting combination.

Key words: Cucumber, Grafting, Double-stock, Water and fertilizer utilization efficiency, Yield, Quality

摘要： 采用改善品质的京欣砧5号南瓜和提高抗逆性的云南黑籽南瓜为砧木，以津优35号为接穗，对单砧木嫁接、双砧木嫁接和自根黄瓜在日光温室条件下植株生长、肥水利用率、产量和品质等性状进行了比较分析。结果表明：嫁接均显著提高植株的株高、茎粗、叶片数、最大叶面积、叶绿素和类胡萝卜素含量，水分利用率和对N、P、K、Ca、Mg的吸收量显著高于自根对照；双砧处理的单株产量、瓜数和单果质量均显著高于京欣砧和自根对照，缓和了单砧木嫁接增加果柄长的趋势；双砧木嫁接显著提高果实可溶性糖含量，且果实VC含量和糖酸比高于黑籽南瓜砧和自根对照；嫁接处理对第1雌花节位、根系活力、果实横径、果实纵径、果形指数、果实含水量等性状没有显著影响。双砧处理综合了京欣砧5号和黑籽南瓜两个单砧处理的优良特性，促进了对肥水的吸收，提高植株的生长势，既高产又优质。

关键词: 黄瓜, 嫁接, 双砧木, 水肥利用率, 产量, 品质