【摘要】 55%吡酰·异丙隆悬浮剂(SC)在小麦播后苗前使用，对杂草有较好的封闭效果，对小麦安全。2019年秋播期间，在天气干旱的情况下，单用55%吡酰·异丙隆悬浮剂1次封闭，无法控制小麦全生育期杂草危害；但是，如果先封闭处理再在春季茎叶处理，除草效果则显著上升。4月上旬调查显示，55%吡酰·异丙隆悬浮剂1次封闭处理对单子叶草的株防效和鲜重防效分别为56.91%和74.05%;55%吡酰·异丙隆SC封闭处理结合5%唑啉草酯乳油茎叶处理的防效分别为79.57%和89.93%,与大面积生产中使用的除草剂2次处理防效相当。更多还原

【Abstract】 Diflufenican·isoproturon 55% SC effectively controlled weeds and was selectivity to wheat when applied after sowing and before crop seedling emergence. The formulated mixture applied alone once in pre-emergence did not provide season-long control under the drought condition during autumn sowing in 2019. But weed control efficacy increased significantly when diflufenican·isoproturon 55% SC in pre-emergence was supplemented by a foliar treatment in spring. In the first ten days of April, monocotyledonous-weed control based on plant density and fresh weight provided by diflufenican·isoproturon 55% SC applied once in pre-emeergence was 56.9% and 74.05%,respectively. When the pre-emergence treatment was supplemented by a foliar application of pinoxaden 5% EC control increase to 79.57% and 89.93%,respectively, which was equivalent to the control obtained with herbicided used in large-scale production.更多还原