农业机器经济寿命的动态研究

Dynamic Study on the Economic Life Span of Farm Machines

根据农业机器的实际使用情况 ,在对现有相关文献研究的基础上 ,运用技术经济理论 ,提出了计算农业机器经济寿命的两个假设。在这两个假设条件下分别建立了计算农业机器经济寿命的数学模型 ,并给出了应用该模型的几点说明。

According to the practical used circumstances of farm machines, on the basis of studying the existing interrelated documents, utilizing technical economics theory, two kinds of hypotheses were proposed. Under the hypotheses the model to calculate the economic life span of farm machines was established. Meanwhile, some directions about the application of the model were given. Finally, the economic life span of small tractors in Gansu Province was obtained by the model.