Analytical monitoring of the influence of mineral fertilizers on the formation of the productivity of model variety of spring barley

Theoretical and experimental material relating to the idea of formation of productivity of spring barley under the influence of the complex of mineral fertilizers is sys-tematized. Analytical forecast is carried out, analytical model of definition of relative increase of the crop of model of barley variety with use of geodetails on the uniformity of distribution of natural and resource poten-tial is presented. In considered 1190 options of experi-ment the amount of nitrogen changes in the range of 0-160 kg of in/hectare, phosphorus - 0-90, the amount of potassium - in the range of 0-60 kg of in/hectare. Relative increase of productivity is distributed on an interval of 1.000-1.996 units with the center of dispersion of 1.592 units and standard devia-tion of 0.171 pieces. The area of efficiency of relative increase of productivity depending on three variables is defined by values of function. Average relative increase is estimated by the median. The ade-quacy of model and the importance of weight coeffi-cients were established by Student's t-criterion at the level of 0...