噻虫嗪FS拌种对大麦蚜虫防治效果及增产作用研究

Research on the Control Effects of Thiamethoxam 30% FS Against Barley Aphids by Seed Dressing and Its Yield Increasing

选用保山大面积推广的多棱品种保大麦13号,分别采用20、30、40、50、60 mL 30%噻虫嗪FS拌10 kg大麦种子防治蚜虫。结果表明,不同剂量30%噻虫嗪FS拌种处理能有效控制蚜虫对大麦的危害,蚜虫发生初期防效为100%,蚜虫增长期防效为70.6%~99.1%,蚜虫盛发期防效为40.8%~78.8%,且持效时间长达5个月。各拌种处理对大麦产量及产量影响因素具有积极作用。大麦生产中,建议每10 kg种子采用30%噻虫嗪FS 40~50 mL进行拌种处理。

The control effects ofthiamethoxam 30% FS on barley aphids were investigated by seed dressing. The results showed that at different survey period, the control effects of thiamethoxam 30% FS were 40.8%-100%, effective period was up to five months. Seed dressing with thiamethoxam 30% FS had a positive influence on barley yield and other yield factors. In barley production, recommended dosage ofthiamethoxam 30% FS was 40-50 mL for 10 kg seeds.