摘 要：探讨甘蔗螟虫的化学防治，为筛选高效的防治药剂提供科学依据。采用蔗茎浸渍法测定了噻虫嗪、杀虫单及其混配对黄螟幼虫的室内毒力，结果表明噻虫嗪和杀虫单复配表现出明显的增效作用，噻虫嗪与杀虫单比值为1︰18时增效作用最显著，共毒系数为133.43。根据最佳配比配制成3.8%颗粒剂进行防治甘蔗蓟马的田间试验,结果表明3.8%杀虫单? 噻虫嗪颗粒剂制剂用量55、70kg/hm2施药90d后的防效分别为80.1%、85.4%，可作为防治甘蔗螟虫替代农药。

Abstract: To study the chemical control of sugarcane borer and and to provide scientific basis for screening its efficient pesticides. The toxicity of thiamethoxam, monosultap and their mixture against Tetramoera schistaceana Snellen 2nd instar larvae were tested in the laboratory by sugarcane stem dipping methods, the results showed that both the thiamethoxam and monosultap had relatively high toxicity against Tetramoera schistaceana adults. Significant synergism was observed in the mixture of thiamethoxam and monosultap, with the ration of 1:18 showing the highest synergism. According to the proper proportion, a 3.8% GR synergistic formulation was manufactured, and the results of controlling after 45 days showed that the control effect were 80.1%, 85.4% at 55, 70 kg/hm2, respectively. These suggested monosultap thiamethoxam 3.8% GR be better as alternative pesticide on controlling sugarcane borer.