Аннотация
Abstract This paper proposes a method for evaluation the relationship between organic matter (humus) and cation content in the soil adsorbing complex and the number of microaggregates determining the soil structure. The method is based on the use of statistical analysis of combined data of water extracts and the amount of microaggregates in soils (serozems and chernozems). The method is expected to enable a more complete assessment of the impact and effects of irrigation on the structure of soil layers.