50%乐无敌EC对水稻主要害虫的试验示范效果

Control Efficacy of Trichlorpon-fipronil on Main Rice Pests and on Safety to Spiders in Rice Field

试验示范结果表明 ,乐无敌 15 0 0～ 180 0ml/hm2 能有效防治稻纵卷叶螟 ,兼治稻飞虱、三化螟枯心、枯孕穗和秋蝗蝻 ;180 0ml/hm2 乐无敌防治三化螟白穗的效果与锐劲特 60 0ml/hm2 相仿 ,并极显著优于三唑磷 ,且对稻田蜘蛛影响较小 ,未伤及蛛群自我调节能力 ,达到了提高环境相容性 。

The test result indicated that 1500～1800ml/hm 2 of trichlorphon-fipronil had the high control Efficacy to Cnaphalocrocis medinalis, Scirpophaga incertulas and Oxya chinensis. Its control efficacy was similar as that of 600ml/hm 2 of fipronil, significantly higher than that of triazophos. And there was no damage to the group of spiders.