自上世纪50年代首次在加拿大和美国分别发现抗2,4-D的野胡萝卜和铺散鸭趾草以来,杂草抗性的问题始终伴随着全球农业的发展。从国际抗性杂草调查的统计数据可以看出,起初20年里,抗性杂草的发展还非常缓慢,进入20世纪80年代中后期,随着全球农药行业的快速发展,抗性杂草的发展速度也非常惊人,近乎呈直线型上升。使得一些抗性杂草甚至演变成超级杂草。目前美国、加拿大等地的抗性杂草 The problem of weed resistance has been accompanied by the development of global agriculture since the first discovery of wild-type 2,4-D-resistant carrot and bastard duckweed in Canada and the United States in the 1950s. According to the statistics of the International Weed Resistance Survey, the development of resistant weeds in the first 20 years was still very slow. With the rapid development of the global pesticide industry in the mid-to-late 1980s, resistant weeds The pace of development is also very alarming, almost linear rise. Some resistant weeds even evolved into super weeds. At present, the United States, Canada and other places of resistance weeds