迄今为止,人们已研究了50多类有机化合物,几乎每一类化合物中都有除草剂品种诞生。20世纪80年代以前,除草剂品种相对较少,涉及的化合物类型不多。尔后,除草剂品种迅速增加,化学结构日趋复杂,涉及多种多样的新类型化合物。据统计,截至2004年底,曾经在我国进行试验、有过生产或获 To date, more than 50 classes of organic compounds have been studied, with the emergence of herbicide varieties in almost every class of compound. Before the 1980s, there were relatively few herbicides and not many types of compounds involved. Since then, the number of herbicides has increased rapidly and their chemical structures have become increasingly complex, involving a wide range of new types of compounds. According to statistics, as of the end of 2004, we had experiments in our country and had production or acquisition