ABOUT THE LEVEL OF USE OF PARK OF COMBINE HARVESTERS
It is known that to improve of grain production efficiency is important to be able to objectively assess the level of use of the park combine harvesters as a whole on agricultural enterprise. A mathematical model is developed as a result of studies and indicators to assess the level of use of the park of combine harvesters are offered. As a basic integral indicator for the assessment of use level of the park combines the level of operating costs is adopted. The model contains three groups of input parameters: the totals of work of grain harvesters, conditions of carrying out harvesting of grain crops in the agricultural enterprises and consumer properties of used combine harvesters. A computer program that has been tested in agricultural enterprises of the Central Black Earth region, is designed based on the model. It was found that the level of operating costs Combine park on harvesting of crops is 104% and is slightly higher than baseline. The levels of depreciation costs, maintenance and repair are in the favorable zone below 100%. The level of fuel costs 142% and the level of costs for the remuneration of 119 % significantly higher than the base level. Performance level (84,5%) and level of availability (78,8%) of the Park of combine harvesters are in a hostile area, and their increase is a means of lowering the operating costs. It was confirmed that the developed mathematical model and computer software allow to estimate the level of use of the park of combine harvesters in the agricultural enterprise.