旧拖拉机交易日趋活跃，也出现不少弊端，提醒农民朋友购买时应注意．1．根据用途和使用条件等因素选购机型，不要购买已停产或淘汰的机型，以防配件短缺，＊响作业．2不要购买超过5年的旧车，这种旧车的大型基础零件因长期使用，内部缺陷难以直接发现，并且耗油也高．3．拖拉 The old tractor trading increasingly active, there have been many shortcomings, reminding farmers to pay attention to when buying. 1. According to the use and conditions of use such as purchase models, do not buy has been discontinued or eliminated models, to prevent the shortage of spare parts, * ring homework. 2 Do not buy used cars over 5 years old. The long-term use of large-scale base parts of such used cars makes it hard to find internal defects directly and consumes a lot of fuel. 3. drag