中国农学通报2025，Vol.41Issue(31)：34-40,7.
干旱荒漠区夏季修剪对玫瑰越冬的影响
Effects of Summer Pruning on Rose Overwintering in Arid Desert Regions
摘要
Abstract
This study aims to enhance the overwintering capacity of rose plants by conducting summer-autumn pruning to regulate the density of new shoots,improve growth conditions,and coordinate the synergistic development of above-ground and under-ground organs,thereby providing technical support for successful rose cultivation in arid desert regions.Using'Desert Rose'in Dunhuang of the Hexi Corridor as experimental material,winter pruning was performed in mid-March 2023 to remove branches above grade 3.After the first flowering in spring-summer,retraction pruning and thinning were conducted to control the density of grade 4 branches at 80-100(CK),75,70,65,60,55,50,45 and 40 branches/m2(T1-T8).Physiological and growth indicators were measured by stratified sampling from the canopy edge inward(0-20,20-40,40-60 cm).After overwintering,the frost mortality rate of grade 3 branches in CK and T1 exceeded 5%.When branch density was reduced below 70 branches/m2(T2),frost mortality decreased to 2%-4%.The LT50(lethal temperature for 50%tissue damage)of T3(65 branches)to T8(40 branches)was significantly lower than CK,with T6 showing the lowest LT50(-35.58℃),indicating markedly improved cold resistance.In the following year,bud burst rate and diameter of grade 4 branches significantly increased from T3 to T8.However,the branch diameter in the inner 40-60 cm layer decreased by 13.68%and 4.28%compared to the 0-20 and 20-40 cm layers,respectively,confirming light limitation on inner branch growth.Root length density in T3-T8 decreased significantly compared to CK,while root activity initially increased and then declined across treatments,peaking in T3-T5.In Dunhuang and similar ecological regions,controlling summer new shoot density at 55-60 branches/m2 under routine winter pruning can effectively improve overwintering survival rates while maintaining higher bud burst rates,branch diameter,and root activity in the subsequent growing season.关键词
干旱荒漠区/玫瑰/夏季修剪/枝条密度/越冬/半致死温度/根系活力/逆境生理Key words
arid desert region/Rosa rugosa/summer pruning/branch density/overwintering/semi-lethal temperature/root activity/stress physiology分类
农业科技引用本文复制引用
张坤,梁虎..干旱荒漠区夏季修剪对玫瑰越冬的影响[J].中国农学通报,2025,41(31):34-40,7.基金项目
兰州文理学院博士启动资金项目"旅游景区果树景观化整形与创新研究"(202205) （202205）
甘肃省高校产业支撑计划项目"有机红枣与玫瑰特色种植与高效加工技术创新集成研究"(2024CYZC-66). （2024CYZC-66）
