自20世纪80年代起,在全球各大类农药市场中,除草剂一直位列首位。表1为1960~2000年全球各大类农药的销售额所占市场比例[,表2则为21世纪以来全球除草剂所占市场份额。全球除草剂共分为19大类,其中,均三氮苯类归于三嗪类,为仅次于苯氧乙酸类的最传统除草剂类别。早在20世纪50年代,就有此类除草剂品种上市。以下就均三氮 Since the 1980s, herbicides have been the highest among the major pesticide markets in the world. Table 1 shows the market share of the global sales of pesticides from 1960 to 2000 [Table 2 shows the market share of the global herbicides since the 21st century. The global herbicides are divided into 19 broad categories. Among them, all triazoles are classified as triazines, the most traditional class of herbicides second only to phenoxyacetic acids. As early as the 1950s, there are such herbicides listed. The following three nitrogen