Scientific Journal of KubSAU

The article considers the problem of reforestation on of processing stations, such as coupe, gully and mountain slopes. To improve the efficiency of the planting work proposed a construction of universal soil-processing instrument (USPI), is able to form discrete planting spot in the form of spot mounding in conditions temporarily humid soil or spot area (with removal of the top layer) on drained soils with simultaneous formation of planting cup for planting of forest plantation. For assessing effectiveness of his work, there was developed an experimental sample of the USPI and conducted its field trials. During the two-factor solution of the problem of optimization of the performance of the USPI there were selected optimization criteria, namely performance, quality and economic feasibility of work instrument, as well as the varied parameters exerting the most influence. To detection the analytical dependences between these parameters, we have performed a series of nine experiments, performed the approximation of functions by polynomials of second order. The result was obtained analytical formulas characterizing the influence of the varied parameters of the USPI on the quality of his work. Also, we have found graphical surfaces response and performed a visual analysis , which allowed determining the optimal values of the varied parameters of the USPI

The model of the universal soil-processing instrument has been developed. The model is represented as an aggregate of discrete elements; the instrument is repre-sented as an aggregate of elementary planes. The model has allowed to study phases of instrument pro-cessing and to assess the quality of tree planting cup

The optimal angles of spatial orientation of disk tools are found basing on the mathematical model of the universal soil-processing instrument. The optimization problem has solved basing on analytical approximation of imitational modeling results and optimization map analysis

Based on a mathematical model of the functioning of the universal soil-processing instrument, the problem of optimization of its kinematic parameters was solved. We have also measured the influence of the mechanical properties of soils on the quality of the formed planting spot