为了筛选出陇东旱塬区白黄瓜设施栽培的适宜嫁接砧木，以当地主栽白黄瓜品种甘丰袖玉自根苗为对照，选用引进的嫁接砧木品种日本P1XP2南瓜F1、博强205B、黑强进行了早春茬嫁接砧木比较试验。结果表明，砧木博强205B的嫁接亲和性和果实营养品质整体表现均最好，砧木黑强的嫁接亲和性和果实营养品质综合表现较好。3种砧木嫁接后的白黄瓜较未嫁接的白黄瓜自根苗品质优、产量高。其中博强205B为砧木嫁接的白黄瓜折合产量最高，为71 268.52 kg/hm2，较对照甘丰袖玉自根苗增产26.05%；日本P1XP2南瓜F1、黑强为砧木嫁接的白黄瓜折合产量较高，分别较对照甘丰袖玉自根苗增产14.57%、7.73%。综合考虑认为，博强205B砧木嫁接亲和力强，嫁接的白黄瓜营养品质优、产量高，且博强205B为黄瓜专用砧木。建议在陇东旱塬区白黄瓜设施栽培生产中宜用以博强205B砧木为主的嫁接苗进行栽培并进一步推广应用。

In order to screen suitable grafting rootstocks for protected cultivation of white cucumbers in the dry plateau area of Longdong, a comparative experiment was conducted in early spring using the local main variety Ganfengxiuyu self-rooted seedlings as control, and three introduced rootstocks including Japanese P1XP2 pumpkin F1, Boqiang 205B, and Heiqiang. Results showed that the rootstock Boqiang 205B had the best overall performance in grafting compatibility and fruit nutritional quality, while the rootstock Heiqiang showed relatively good performance in both aspects. White cucumbers grafted onto the 3 rootstocks exhibited superior quality and higher yield compared with self-rooted control plants. Among them, Boqiang 205B grafted white cucumber achieved the highest average yield of 71 268.52 kg/ha, representing a 26.05% increase compared with the self-rooted control Ganfengxiuyu. White cucumbers grafted onto Japanese P1XP2 pumpkin F1 and Heiqiang also showed higher yields, increasing by 14.57% and 7.73% over the control, respectively. In conclusion, Boqiang 205B exhibited strong grafting affinity, produced white cucumbers with superior nutritional quality and higher yield, and is a cucumber-specialized rootstock. Therefore, it is recommended that grafted seedlings using Boqiang 205B as the main rootstock be adopted and further promoted in protected cultivation of white cucumber in the dry plateau areas of Longdong.

S642.2

庆阳市科技计划项目(QY-STK-2023A-074)。