3%氯氟吡啶酯乳油防治机直播稻田杂草研究

Study of Weed Control with 3% Florpyrauxifen EC in the Direct Seeding Rice Field

研究了3%氯氟吡啶酯乳油对机直播田杂草的防治效果。结果表明,3%氯氟吡啶酯乳油杂草谱广,施药35 d,36 g a.i./hm2处理及27 g a.i./hm2混配10%氰氟草酯(112.5、225.0 g a.i./hm2)处理能有效防治机直播田千金子(Euphorbia lathyris)、耳叶水苋菜(Ammannia arenaria)、水蓼(Polygonum hydropiper)、陌上菜(Lindernia procumbens)和莎草(Cyperus rotundus),植株密度防效均为100%。

The effect of 3% florpyrauxifen EC on weed control in direct seeding rice field was studied. The results showed that 3% florpyrauxifen EC could effectively control a broad spectrum of weeds in the direct seeding rice filed. The weed control efficiency of Euphorbia lathyris,Ammannia arenaria,Polygonum hydropiper,Lindernia procumbens and Cyperus rotundus were totally up to 100% at 35 d by 36 g a.i./hm2 3% florpyrauxifen EC or 27 g a.i./hm2 3% florpyrauxifen EC mixed with 10% cyhalofop-hutyl EC （112.5 or 225.0 g a.i./hm2）.