【摘要】 [目的]筛选对甘薯田菊方翅网蝽适用、高效的防治药剂并评估其田间防效。[方法]室内采用虫体浸渍法和离体叶片喷雾法、田间采用喷雾法，比较5种杀虫剂对菊方翅网蝽的生物活性和防治效果。[结果] 100 g/L顺式氯氰菊酯乳油对成虫的室内生物活性最高，致死中浓度(LC₅₀)为0.3181 mg/L，药后14 d田间防效为73.6%。22.4%螺虫乙酯悬浮剂的室内生物活性最低，对成虫几乎无效，田间最高防效仅为43.7%。60%吡蚜酮水分散粒剂对成虫的LC₅₀为1585.8738 mg/L，速效性较差。20%烯啶虫胺水分散粒剂与25%噻虫嗪水分散粒剂的田间防效最高，显著优于其他药剂，药后3、14 d的防效分别为85.9%、98.8%与83.9%、93.9%。[结论]建议在生产中使用20%烯啶虫胺水分散粒剂（41.0 g a.i./hm2）或25%噻虫嗪水分散粒剂（51.3 g a.i./hm2）防治甘薯田菊方翅网蝽。更多还原

【Abstract】 [Aims] To screen effective insecticides against Corythucha marmorata in sweet potato fields and evaluate their field control efficacy. [Methods] Laboratory methods（insect-dipping and detached-leaf spray） and field spray trials were conducted to compare the biological activity and control efficacy of the five insecticides against C. marmorata. [Results] The insecticide alpha-cypermethrin 100 g/L EC showed the highest toxicity to C.marmorata adults in laboratory tests, with an LC₅₀of 0.3181 mg/L, and its field control efficacy reached 73.6% on day 14 after treatment. Spirotetramat 22.4% SC had the lowest activity in laboratory, being almost ineffective against C. marmorata adults, with a maximum field efficacy of 43.7%. The LC₅₀of pymetrozine 60% WG against C.marmorata adults was 1585.8738 mg/L, indicating relatively slow action. Nitenpyram 20% WG and thiamethoxam25% WG showed the highest field control efficacy, significantly outperforming other insecticides. Their control efficacy on days 3 and 14 after treatment were 85.9% and 98.8% for nitenpyram, and 83.9% and 93.9% for thiamethoxam,respectively. [Conclusions] It is recommended to use nitenpyram 20% WG（41.0 g a.i./hm2） or thiamethoxam 25% WG（51.3 g a.i./hm2） for the control of C. marmorata in sweet potato fields.更多还原