农机监理“三率”(持证率、挂牌率、年审年检率)的高低是衡量一个单位农机监理水平高低的重要标志。 自1991年拖拉机由交警部门委托农机部门管理以来,农机部门积极主动做了不少工作,使各项工作走上了正轨。但从目前监理情况看,在工作过程中出现了一些问题和困难。例如:无证行驶,黑车黑户,不按时参加年检年审,拖拉机违章行驶现象严重等,究竟什么原因? Agricultural supervision “three rates” (certification rate, listing rate, annual inspection rate) is a measure of the level of an important indicator of the level of agricultural supervision. Since the tractor was commissioned by the traffic police department in 1991 to manage the agricultural machinery sector, the agricultural machinery sector has actively and voluntarily done a lot of work so that all the work is on track. However, judging from the current situation of supervision, some problems and difficulties have emerged in the work process. For example: driving without a license, black car black households, not on time to participate in the annual inspection, illegal driving tractor serious phenomenon, what exactly?