LAW PLODOSMEN: ECONOMIC AND POWER EFFICIENCY OF CROP ROTATIONS
In the developing modern market conditions import substitution of foreign production becomes an important factor. The special attention is paid to agricultural production, in particular strategically important branch of plant growing. Effective agricultural production is possible only on condition that the grown-up cultures are cultivated not irregularly one by one, and in a crop rotation. At the same time the crop rotation as far as it is possible, has to meet the specific requirements of plants for the soil and nutrients (Dubslaf, 1966). The scientific founders studying systems of agriculture and crop rotations in Russia are A.T. Bolotov, I.M. Komov, V.A. Levshin, etc. Differently developed in the different historical periods one, other alternation of cultures, shortcomings and advantages of the offered theories taking into ac-count climatic conditions from an agriculture level of development came to light. With development of scientific and technical and scientific and technological processes the existing techniques were improved and the directions of development came to light. But steadily at all times the main requirement - increase of production from arable land unit of area was imposed to crop rotations. At the same time also the fact that at application of a crop rotation fertility of soils should not decrease was not unimportant, and on the contrary remained at the former level. All this also predetermines need of an assessment of crop rotations from the point of view of economic efficiency.