为制定宁夏中部干旱带日光温室秋冬茬黄瓜生产水分灌溉管理参数，采用田间试验的方法，研究不同灌溉频率对嫁接黄瓜产量及根系分布特征的影响。结果表明：在日光温室黄瓜秋冬茬栽培中，黄瓜根系主要分布在0~20 cm土层中，0~10 cm土层根系生物量超过80%，结果期不同灌溉频率对黄瓜根系生长量影响显著，其中每7 d灌溉1次的处理（TR3）0~15 cm土层根系生物量最高，灌溉频率对15~30 cm土层分布影响不显著，减少灌溉频率，能够促进0~15 cm土层黄瓜根系生长量的增加，有利于黄瓜坐果，产量增加以及果实中糖含量的积累，因此在宁夏地区中部干旱带日光温室黄瓜冬季生产中，平均日均温18 ℃左右，、灌水定额1 500 m3/hm2的条件下，黄瓜结果期的灌溉间隔7 d为宜。

In order to formulate the irrigation management parameters and improve the water use efficiency of cucumber planted in autumn-winter in the arid zone of central Ningxia. The field experiment was carried out to study the effects of different irrigation frequencies on the yield and root distribution of grafted cucumber. The results show that, in Greenhouse Autumn-winter Planted Condition, cucumber root mainly distributed in 0-20cm soil layer, irrigation frequency in fruiting period had significant effect on cucumber root growth, but had no significant effect on different soil layer distribution. Reducing irrigation frequency can promote the growth of cucumber roots i, which is beneficial to fruit setting, yield increase and sugar content accumulation in fruit. Under the condition of average daily temperature of 18 ℃ and irrigation quota of 1500 m3/h m2, The optimum irrigation interval of cucumber is 7d .