几种化学药剂对瑞典蝇的防治效果比较

摘要

In order to determine the control effect of seed treatment on frit flies,six different pesticides was compared.The results showed that 0.2% imidacloprid was the best,with the control effect at 90.85% in 30 days after sowing.And it had promotional effect on emergence.The tefluthrin also had a longer persistent period.The control effects at three different concentration treatments(0.1%,0.2%and 0.3%)were all over 80% in 30 days after sowing.0.3% tefluthrin had the best control effect(96.60%),followed by 0.2%imidacloprid(93.01%)in 13 days after sowing.But 0.3%tefluthrin had apparent inhibition effects on emergence and decreased it by 31.39%,compared with the control.%为明确药剂拌种对小麦瑞典蝇的防治效果,对吡虫啉、七氟菊酯等6种常用拌种剂进行了药效对比试验.结果显示,以0.2%吡虫啉效果最佳,播种30 d后调查,防效仍在90.85%,且对出苗有一定促进作用.七氟菊酯的持效期也较长,播种30 d后调查,0.1%、0.2%和0.3%3种剂量的防效均在80%以上.播种后13 d调查,以0.3%七氟菊酯防效最高,其次为0.2%吡虫啉,分别为96.60%和93.01%,但前者对出苗有较强抑制作用,相对出苗率较对照降低31.39%.