噻虫·咯·霜灵FS拌种对大麦蚜虫防治效果及增产作用研究

摘要

考察不同剂量25%噻虫·咯·霜灵FS拌种对大麦蚜虫的防治效果,以及对大麦产量的影响.结果表明,不同剂量的25%噻虫·咯·霜灵FS拌种能有效控制蚜虫对大麦的危害,蚜虫发生初期防效达100%,蚜虫增长期防效为70.9%~96.7%,且持效期长.同时,25%噻虫·咯·霜灵FS拌种能显著提高大麦产量、有效穗、穗实粒数及千粒重,此外对白粉病具有兼治效果.大麦生产中采用60~70 mL 25%噻虫·咯·霜灵FS拌10 kg种子,不仅能有效防治蚜虫,还能提高大麦产量和品质.%The control effects of thiamethoxam + fludioxonil + metalaxyl-M 25% FS on barley aphids were investigated by seed dressing. The results showed that all the treatments of thiamethoxam + fludioxonil + metalaxyl-M 25% FS were effective to control aphid, with the control effects of 100%, and 70.9%-96.7% in the initial and rising stage of aphid occurrence. The yield, efficient heads, kernel number, and weight per 1000 kernels of barley increased significantly. In addition, thiamethoxam + fludioxonil + metalaxyl-M 25% FS had certain control effect on powdery mildew.