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[目的]明确52%吡虫啉·咯菌腈·苯醚甲环唑悬浮种衣剂对小麦蚜虫和纹枯病的防治效果及用药量。[方法]采用拌种法测定52%吡虫啉·咯菌腈·苯醚甲环唑悬浮种衣剂对麦蚜和纹枯病的田间防效。[结果]该种衣剂在药种比为156、208 g a.i./100kg时,对麦蚜的防治效果分别为94.23%~97.78%和95.38%~98.75%,与对照药剂600 g/L吡虫啉FS 180 g a.i./100kg防治效果差异显著;该种衣剂在药种比为156、208 g a.i./100kg时,对纹枯病的防治效果分别为68.94%~83.35%和70.49%~86.29%,与对照药剂4.8%咯菌腈·苯醚甲环唑FS拌种处理差异不显著。[结论]52%吡虫啉·咯菌腈·苯醚甲环唑悬浮种衣剂对麦蚜和纹枯病具有良好防治效果,最佳使用剂量为药种比156~208 ga.i./100kg。
[Objective] The research aimed to determine the control effect and dosage of 52% imidacloprid, fludioxonil and difenoconazole suspension seed coating on wheat aphid and sheath blight. [Method] The field control effect of 52% imidacloprid, fludioxonil and difenoconazole suspension seed coating on wheat aphid and sheath blight was determined by seed dressing method. [Result] The results showed that the control effect of the seed coating agent on wheat aphids was 94.23% -97.78% and 95.38% -98.75%, respectively, at the pesticide ratio of 156 and 208 g ai / 100 kg, respectively. Compared with the control agent 600 g / L imidacloprid FS The control effect of 180 g ai / 100kg was significant. The control effect on sheath blight was 68.94% -83.35% and 70.49% -86.29%, respectively, when the seed ratio was 156,208 g ai / 100kg, Control agent 4.8% Fludioxonil difenoconazole FS seed dressing difference was not significant. [Conclusion] The 52% imidacloprid-fludioxonil and difenoconazole suspension seed coating had good control effect on wheat aphid and sheath blight. The best dosage was 156 ~ 208 ga.i./100kg.