Biological activity influence of soil and nitrates on the yield of soft spring wheat in crop rotation and permanent sowing in Urals southern chernozems

The paper presents a study of the main factors affecting the yield level of soft spring wheat. This research is based on the study of the biological activity of the soil and the content of nitrates in the Urals southern chernozems. This paper is obtained as a result of field and laboratory studies. The purpose of the research work is to establish the influence of each factor individually on the yield of grain crops according to various predecessors and backgrounds of mineral nutrition. For the first time in the experiment, the methodology of the field experiment, decomposition of linen (applications) and the ionometric method are used. Over 18 years, rich experience has been accumulated, and soil fertilizer options have been developed to increase wheat productivity. Studies show that using balanced fertilizer it is possible to increase the yield of wheat after growing millet in this territory to 9.7 centners per 1 ha, the dependence on the influence of the activity of microorganisms is 71.51 %. In other research options, after the application of mineral fertilizers during the growing season, grain yield of 9.4 and 9.0 kg per 1 ha is noted, and the proportion of the effect of nitrate-nitrogen is 33.82 and 24.67 %. The results obtained are of scientific and practical importance in the field of microbiology, chemistry, agriculture, agronomy and agricultural production.