The energy requirement of operating unit on unit area, the operating speed of unit, the field efficiency of operating unit, and the drawbar efficiency of tractor are not only thought out but the annual cost of operating unit and the timeliness loss of operating' when the tractor and it's implement system are selected and calculated with the principle of the Least-cost.
For this reason, with researching the method and principle of drawing, the led results are increasing the efficiency, saving time, reducing cost, improving the performance of agricultural machinery.
The classification system was tested for field efficiency on Tom Beall Creek watershed, an agriculturally impacted third-order stream in the Clearwater River drainage, Nez Perce County, Idaho, USA.
In this paper, the selection-calculation models of tractor and it's implement system are set up with the principle of the Least-cost(the annual Least-cost of operating machine) and Lotus 1-2-3 for state farms in the North of the Xing'an Mauntains of Hulunbel'er League. The energy requirement of operating unit on unit area, the operating speed of unit, the field efficiency of operating unit, and the drawbar efficiency of tractor are not only thought out but the annual cost of operating unit and the timelines...
There are some factors affecting the efficiency in the field, such as theoretical productivity of mechanism, motility of machinery, running system in field, shape of land-mass, system restriction. But the system restriction is a crucial factor. The machinery system must be allocated reasonably in order to resolve it. For this reason, with researching the method and principle of drawing, the led results are increasing the efficiency, saving time, reducing cost, improving the performance of agricultural machi...