药剂防治稻纵卷叶螟幼虫的田间效果

为了筛选替代甲胺磷防治稻纵卷叶螟Cnaphalocrocismedinalis幼虫的药剂 ,对毒死蜱及其混配剂、氟虫腈 (锐劲特 )及其混配剂等 1 0多种农药进行了防治试验。试验结果表明 ,3 5 %纵卷清 (毒死蜱与乙酰甲胺磷 )可湿性粉剂、3 5 %毒斯威乳油、毒死蜱与敌敌畏混配剂以及高剂量的氟虫腈及其混配剂3 6%雄斯等药剂防治稻纵卷叶螟中高龄幼虫都有较显著的防治效果。 3 5 %纵卷清 80g 667m2 、3 5 %毒斯威 80mL 667m2 等药剂已在生产中大面积应用。在纵卷叶螟发生量大、虫龄偏高情况下 ,应适当增加用药量。

Effectiveness of several insecticides on control of Cnaphalocrocis medinalis larvae in the fieids

Field trials of more than 10 insecticides or their mixed preparations were made in order to screen the effective preparations for controlling the rice caseworm( Cnaphalocrocis medinalis ). The results showed that 35% zhongjuanqing wettable powder(mixed preparation with chlorpyrifos and acephate) applied at dose of 80 g/667 m\+2 and 35% dusawei emulsifiable concentrates(mixed preparation with chlorpyrifos and dichlorvos) at 80 mL/667m\+2 were able to control this insect effectively.