Pei Tianhao, Wang Long, Zhao Yijin, Shi Shusen, Gao Yu
College of Plant Protection, Jilin Agricultural University, Changchun 130118, China.
Dalian City Investment Asset Management Co., Ltd., Dalian 116021, China.
Insects. 2025 Apr 11;16(4):405. doi: 10.3390/insects16040405.
In soybean fields across Northeast China, Schrank (Thysanoptera, Thripidae) populations are increasing, posing a significant threat to soybean production. The aim of this study was to evaluate the toxicity, insecticide efficacy, and field performance of thirty insecticides against . Laboratory bioassays revealed that fenthion (LC = 2.26 mg/L), sulfoxaflor (LC = 4.28 mg/L), cyetpyrafen (LC = 4.94 mg/L), and imidacloprid (LC = 6.16 mg/L) exhibited the highest toxicity against . Pot experiments were subsequently conducted to assess insecticide efficacy. Seven days after application at the highest tested concentration, the insecticide efficacy of fenthion, sulfoxaflor, chlorantraniliprole, bifenazate, and malathion achieved 100% control efficacy. The four insecticides were selected for field trials based on their high toxicity and insecticide efficacy. Seven days after application, the field efficacy of fenthion at 11.25 g a.i.·hm, sulfoxaflor at 1.19 g a.i.·hm, cyetpyrafen at 8.10 g a.i.·hm, and imidacloprid at 11.25 g a.i.·hm exceeded 80%. Thus, these four insecticides hold strong potential for integrated management of . Overall, the findings provide a valuable reference for developing chemical control strategies against this pest.
在中国东北的大豆田中，蓟马（缨翅目，蓟马科）种群数量不断增加，对大豆生产构成重大威胁。本研究的目的是评估30种杀虫剂对蓟马的毒性、杀虫效果和田间表现。实验室生物测定表明，倍硫磷（LC = 2.26毫克/升）、氟啶虫胺腈（LC = 4.28毫克/升）、乙螨唑（LC = 4.94毫克/升）和吡虫啉（LC = 6.16毫克/升）对蓟马表现出最高毒性。随后进行了盆栽试验以评估杀虫剂效果。在最高测试浓度下施药7天后，倍硫磷、氟啶虫胺腈、氯虫苯甲酰胺、联苯肼酯和马拉硫磷的杀虫效果达到了100%的防治效果。基于其高毒性和杀虫效果，选择了这四种杀虫剂进行田间试验。施药7天后，11.25克有效成分·公顷的倍硫磷、1.19克有效成分·公顷的氟啶虫胺腈、8.10克有效成分·公顷的乙螨唑和11.25克有效成分·公顷的吡虫啉的田间防效超过80%。因此，这四种杀虫剂在蓟马的综合防治方面具有很大潜力。总体而言，这些研究结果为制定针对这种害虫的化学防治策略提供了有价值的参考。
