高海拔地区因受到温度的制约而限制了桃的栽培。为筛选出适宜较高海拔地区种植的桃优良品种。对引进的17个桃品种在兰州市海拔1 870 m地区进行了试种筛选。2020 — 2022年连续3 a对各引进品种的栽培适应性、越冬后抽条和花芽受冻程度、果实主要经济性状等指标进行了评价。综合比较分析表明，桃品种世界1号、陇油桃1号、陇蜜10号、陇蜜9号、白凤、中蟠13号和油蟠桃7-7在试验区适应性强，果实经济性状优异，连续3 a平均抽条指数和花芽受冻指数均 < 30，适宜在高海拔地区适度种植。

The planting of peach is limited in high altitude areas due to temperature constraints. In order to screen out excellent peach varieties suitable for planting in high altitude areas, 17 peach varieties were introduced for trial planting and variety selection in the area of 1 870 m above sea level in Lanzhou. Through three consecutive years from 2020 to 2022, the cultivation adaptability of each introduced variety, the degree of branch extraction and flower bud freezing after overwintering, and the main economic characteristics of fruit were evaluated and screened from the aspects of cultivation performance. Through comprehensive comparison and analysis, seven varieties i.e., World 1, Longnectarine 1, Longmi 10, Longmi 9, Baifeng, Zhongpan 13 and Youpan 7-7 showed strong cultivation adaptability and excellent fruit economic characteristics. The average branch extraction index and flower bud freezing index for three consecutive years were less than 30, which is suitable for moderate planting in high altitude areas.

S662.1

甘肃省科技计划项目(20CX9NA090、22CX2NA006)；国家桃产业技术体系种苗扩繁与生产技术岗位(CARS- 30-1-6)；农业农村部西北地区果树科学观测实验站(S-10-8)。