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报道了 1997～ 1998年两年间抗性观察圃施用除草剂甲磺隆后 ,杂草种类的变化 ,总趋势是杂草种类增多、多年生杂草上升。其中三叶鬼针草表现数量由少变多 ,植株高度随甲磺隆处理浓度加大而变矮的抗性变化现象。
The change of weed species after applying herbicide metsulfuron - methyl in the resistance observation garden for two years from 1997 to 1998 was reported. The general trend was that weeds species increased and perennial weeds increased. Among them, the number of Bidens bipinnata increased from less to more, and the height of plant became shorter with the increase of metsulfuron concentration.