森草净防除苹果园杂草的效果

Chemical Weed Control with Sulfometuron in Apple Orchard

森草净防除苹果园杂草的效果＠武菊英＠江国铿＠贾春虹￥北京市农林科学院植保环保所森草净，防除效果，苹果园，化学除草森草净防除苹果园杂草的效果＊武菊英江国铿贾春虹关键词森草净防除效果苹果园化学除草目前果树生产迅速发展，但果园除草还远远不能满足生产需要，首先是除...

Twoyear field studies were conducted to determine efficiency of sulfometuron for weed control in apple orchard.Preemergence application of sulfometuron at 0.015 kg/hm2 provided good weed control one month after treatment.The term of effective control lasted for 70 days when sulfometuron was applied at 0.025,0.045 and 0.09 kg/hm2,control efficiency was 85.5%～100%.But above treatment had poor control to pernual weed,only 12.0%～68.0%.Postemergence application of sulfometuron at 0.060 and 0.090 kg/hm2 gave significant suppress of weeds 40 days after treatment and the suppressing level of plant height and weight were 75%～85% and 78.2%～90.0%,respectively.Sulfometuron plusing diuron(1.20 kg/hm2),armzine(1.20 kg/hm2)or glyphosate (0.30 kg/hm2)improved the level of weed control compared with sulfometuron postemergence used alone.All treatments had no bad effect on the growth of apple tree compared with the check.