An important variable parameters are: the structure of sown areas and direction of livestock development, crop and livestock productivity, the specific soil resistance processing, field sizes, angles of the terrain; distance transport of agricultural products, fertilizers and construction materials; calendar dynamics of precipitation, temperature, and soil moisture and air, the duration of the predetermine the impact of technological operations in crop production on crop production. Changing these parameters changes the structure and dynamics of quantities in crop and livestock production, affects the duration of mobile agricultural machinery and the magnitude of costs associated with their use. Therefore, difficulties arise when determining the optimal composition of the ICC with a large region vary considerably in terms of territorial breakdown of machinery, such as non-chernozem zone. Economy in the same direction and systems Reference can be identified in selected agricultural zones and subzones. Thus one of the main differences are the size of enterprises acreage. Restructuring of the ICC disproportionate change obshey sowing farm area, as obtained from the calculations a value indicating the number of cars presented a mixed fraction and rounded to integers. Especially significant is the fact that for farms with small arable land area. Therefore, when calculating the optimal structure of an enterprise and the optimal structure of the ICC zone, based on the total sown area in it, we get the optimal concentration of mechanization of production processes.
In determining the optimal number of machines for the agricultural zone is difficult. It is advisable to divide the economy into groups by size of cultivated areas, calculate the demand in technique farms in each group, and then establish the need in the art of the entire zone by adding requirements for technology outside the zone of all groups of farms. Calculations for individual enterprises and large regions differ not only in techniques but also the appointment of the results. The total need in the art will immediately farms. At the same time in the transition to cost accounting, and sharply increasing tractor production, these farms are more interested in optimizing the structure of the ICC. The purpose of the calculations for large regions – to specify the summary statement, compiled on the basis of Order farm area needs in the art, to establish the relative effectiveness of technology in different agricultural zones.