【摘要】 为探明外来入侵杂草加拿大一枝黄花在江苏丘陵地区的分布、危害与生长节律，2023年对南京、镇江丘陵地区8个县域加拿大一枝黄花发生危害开展实地调查，以明确其发生危害情况，监测典型生境下的周年生长节律，并采用Logistic生长模型进行分析，梳理当前防控现状与不足。结果表明，加拿大一枝黄花在江苏丘陵地区广泛分布，平均危害面积占比为7.31%,农村道路、铁路用地、旱地等生境危害突出，且南京地区加拿大一枝黄花在不同生境间的危害面积占比差异较镇江更为显著。加拿大一枝黄花在不同生境下的速生期存在显著差异，与农村道路生境相比，水浇地中速生期推迟10.0 d,持续时间延长20.9 d。加拿大一枝黄花在江苏丘陵地区入侵态势严峻，不同生境的危害程度与速生期差异显著，物理防治应侧重春季，化学防治需结合各生境速生期调整施药时间，为差异化防控提供依据。更多还原

【Abstract】 To explore distribution, harm, and growth rhythm of the invasive alien weed Solidago canadensis L.in hilly region of Jiangsu Province, a field survey was conducted in 2023 on the occurrence and damage of S. canadensis L.in 8 counties of the hilly areas of Nanjing and Zhenjiang.The aims were to clarify its occurrence and damage status, monitor the annual growth rhythm in typical habitats, analyze the data using the Logistic growth model, and sort out the current status and deficiencies of prevention and control.The results showed that S.canadensis L.was widely distributed in hilly region of Jiangsu Province, with the average proportion of damaged area accounting for 7.31%.Habitats such as rural roads, railway land, and dry land suffered prominent damage, and the difference in the proportion of damaged area of S.canadensis L.among different habitats in Nanjing was more significant than that in Zhenjiang.There were significant differences in the rapid growth period of S.canadensis L.in different habitats; compared with the rural road habitat, the rapid growth period in irrigated land was delayed by 10.0 days and the duration was prolonged by 20.9 days.S. canadensis L. exhibited a severe invasive trend in hilly region of Jiangsu Province,with significant differences in the damage degree and rapid growth period among different habitats. Physical control should focus on spring,and chemical control needs to adjust the pesticide application time according to the rapid growth period of each habitat,which provides a basis for differentiated prevention and control.更多还原