现代化农机具可以改善农民的生产和生活条件,但是,大多数农民由于文化水平较低,对农机知识掌握不多,购买农机时常会遇到这样或那样的问题。购买农机具的原则应该是,性能先进、质量可靠、适应性强、价格合理、售后服务有保障、各类手续齐全的农机具才能买。所以,无论选购新产品,还是购买“二手货”都要遵守以下原则: 1 “三无”农机产品不能买。即无生产厂家、无厂址、无产品合格证的产品。 2 不适应本地地理条件和经济条件的 Modern agricultural implements can improve peasants’ production and living conditions. However, most peasants often have one or more problems in purchasing farm machinery due to their low level of education and their limited knowledge of agricultural machinery. The principle of purchasing agricultural machinery should be advanced performance, reliable quality, adaptability, reasonable price, after-sales service is guaranteed, all kinds of formalities of agricultural machinery can buy. Therefore, no matter buy new products, or buy “second-hand goods” must abide by the following principles: 1 “three no” agricultural products can not buy. That is, no manufacturer, no site, no product certification products. 2 does not meet the local geographical conditions and economic conditions