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Study on Rational Renewal Time Limit of Large Combined Harvester about JD-1075

Zhu Kuilin et al. (Heilongjiang August First Land Reclamation University, Mishan 158308)  
Through the typical investigation of Heilongjiang state farms and on the base of collecting and analyzing large real data, the changing regularity of the technical and economic index along with the use time about combined harvesters was obtained using the mathematical statistics method, also the optimum economic life and the rational renewal time limit were worked out in this paper.The result of rational renewal time limit about large combined harvesters represented by the model JD-1075 is 10 years.
【CateGory Index】: S225.3
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