Polenok A. Productivity of crop rotation depending on soil tillage methods and fertilizing in conditions of check irrigation systems

The object are processes the formation of agrophysical and water regimes of soil, plant weeds and crop productivity of rice crop rotation depending on technological measures of cultivation. The basic purpose is the development of complex organizational and technological activities in accordance of resource-saving methods of tillage, fertilizer dose and previous crops selection, and determining their influence on physical properties of soil, crop weediness, yield and quality of crops grain of rice crop rotation. Using methods: field, visual, quantitative, laboratory, settlement and comparative, mathematical statistics. In the conditions of irrigation systems scientifically are substantiated methods of cultivation and fertilizer rice crop rotation crops based on the optimization agrophysical and agrochemical modes of meadow-chestnut soils for the first time. Optimized process and crop rotation settings based on agro-ecological, economic indicators, proposed ways to improve the economic and bioenergetic efficiency of grain crops cultivation by replacing ploughing on disk tillage and system optimization of crops fertilization in rice crop rotation. The developed cultivation technology of rice crop rotation, provided the crops yield on level: winter wheat - 4.5 to 5.0 t/ha, rice - 8,0-8,5 t/ha, spring barley 4.2 to 4.6 t/ha, millet - 2.4-2.7 t/ha, soybeans - 3.5 to 3.7 t/ha, saving of energy and material sources (8-28 % on different cultures), labor costs and maintain soil fertility. Implementation of researches and development carried out in State Company Experimental farm of the Institute of rice NAAS on the area of 148 hectares during the 2012-2013. Areas of use is agricultural production.