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为提高现有农药对褐飞虱的防治效果、降低褐飞虱产生抗药性的风险、明确吡蚜酮和啶虫脒2种杀虫剂及其不同复配比例制剂对褐飞虱的防治效果,采用60%啶虫脒·吡蚜酮WG1#(5∶1),2#(1∶10)2种配方以及5%啶虫脒EC和50%吡蚜酮WG进行田间药效试验。结果表明,60%啶虫脒·吡蚜酮2#药剂(60 g/hm2)在同等有效成分下,持效性优于对照药剂5%啶虫脒EC 720 g/hm2,防效达到78.95%,并且可以减少有机溶剂的使用;与对照药剂50%吡蚜酮WG 150 g/hm2防效无显著差异,但能减少有效成分用量40%。如能通过添加助剂提高2#药剂对褐飞虱防治的速效性,该配方或可用于生产实践中。
In order to improve the control effect of the existing pesticides on the brown planthopper and reduce the risk of developing resistance to the brown planthopper, two pyrethroid and acetamiprid insecticides and their different mixture proportions were tested for their control effect against the brown planthopper, using 60% Field experiments were conducted with two formulations of amidine pymetrozine WG1 # (5: 1) and 2 # (1:10) with 5% acetamiprid EC and 50% pymetrozine WG. The results showed that 60% acetamiprid pymetrozine 2 # (60 g / hm2) had the same efficacy as the 5% acetamiprid EC 720 g / hm2 and the control efficacy reached 78.95% , And can reduce the use of organic solvents; and 50% pymetrozine WG 150 g / hm2 control efficacy no significant difference, but can reduce the amount of active ingredient 40%. If the additive can be used to enhance the effectiveness of 2 # pesticide in controlling BPH, the formula can be used in production practice.