【目的】 黄曲条跳甲Phyllotreta striolata是浙江省塑料大棚十字花科蔬菜重要害虫，明确其在该种植环境中的活动动态对于制定精准防控策略具有重要的指导意义。【方法】 采用黄、绿两种色板在5:00-17:00诱集黄曲条跳甲成虫并逐小时记录诱集数量与整点的环境温度和相对湿度；基于单因素方差分析与Tukey’s HSD检验其活动动态，并通过逐步回归模型与广义相加模型分别验证环境温度、相对湿度及二者交互作用对其活动动态的影响；基于独立样本t检验明确黄、绿两种色板对黄曲条跳甲的诱集效果。【结果】 本次诱集到黄曲条跳甲共2 703只，不同时段的数量从0-109只不等，平均0-（46.20±11.06）只/h。日间活动动态呈单峰分布，时间因素显著影响活动动态（F = 58.03, P < 0.05），5:00-7:00活动水平低，7:00后逐渐上升，至10:00趋于稳定并持续至12:00，12:00-13:00达峰值后显著下降并持续稳定至17:00。环境温度与相对湿度显著影响活动动态（r² = 0.390 2, P < 0.05）。黄曲条跳甲活动动态在33.31 ℃以下与环境温度正相关（r² = 0.349 1, P < 0.05），随温度继续升高无明显变化趋势，与相对湿度呈负相关关系（r² = 0.345 6, P < 0.05）。黄、绿色板诱集的黄曲条跳甲数量无显著差异（t = 0.21, df = 5 758, P = 0.85）。【结论】 研究结果阐明了塑料大棚中黄曲条跳甲的日间活动动态特征，为黄曲条跳甲的监测预警和精准防控提供了重要的理论依据。

 [Aim]  To improve understanding of the population dynamics of the striped flea beetle (SFB), Phyllotreta striolata, an important pest of cruciferous vegetables in greenhouses, and thereby help develop more precise prevention and control strategies for this pest. [Methods]  Two color plates, yellow and green, were used to collect adult SFB from 5:00 to 17:00. The number of SFB collected, and the hourly ambient temperature and relative humidity, were recorded. The results were analyzed with one-way ANOVA and Tukey's HSD tests, and the effects of ambient temperature, relative humidity, and the interaction between these, on SFB activity was verified using stepwise regression, and generalized additive, models, respectively. The effect of plate color plates (yellow vs green), on the number of SFB captured was assessed using an independent sample t-test. [Results]  A total of 2 703 SFB were collected. The number caught in different periods ranged from 0 to 109 individuals, with an average of 0 to (46.20 ± 11.06) individuals captured per hour. Time of day significantly influenced SFB activity (F = 58.03, P < 0.05). Activity was low from 5:00 to 7:00, but gradually increased after 7:00 it to a stable level from 10:00 until 12:00. There was then an explosive peak in activity between 12:00 and 13:00, after which it significantly declined to a stable level until 17:00. Environmental temperature and relative humidity significantly affected activity (r² = 0.390 2, P < 0.05). Below 33.31 ℃, activity was positively correlated with the environmental temperature (r² = 0.349 1, P < 0.05), and there was no obvious change as the temperature continued to rise. Relative humidity was negatively correlated with activity (r² = 0.345 6, P < 0.05). There was no significant difference in the number of SFB captured using yellow or green boards (t = 0.21, df = 5 758, P = 0.85). [Conclusion]  These results clarify the daily activity patterns of the SFB in plastic greenhouses, and thereby provide an important theoretical basis for the monitoring, prevention and control of this pest.