The intensification of the productive processes of the agroecosystems by the progressive increase of the mechanical and chemical imputations on the soils involved the accelerated degradation of their structural-functional organization and biogeocenotic functions.

Multiple researches have shown that mechanical and chemical imputations on soils lead to degradation of soil micro- and mesostructure, degradation of the soil porous space, intensification of the crustification and soil cover processes, mobilization of mineral-clay and consolidation of the lower segment of the agrogenic layer.
The driving force of the specified processes is the unidirectional reduction of the priority role of the humus formation and accumulation process in the natural - anthropic evolution of the chernozems and the reproduction of their potential fertility. Based on the systemic approach of the synchronized evolution of the structural-functional organization and of the soil ecosystem function the principles of management of biogeocenotic functions of agroecosystems have been elaborated, based on the law of priority of the role of the process of formation and accumulation of humus.
According to it the management of the biogeocenotic functions of agroecosystems in any agroecological conditions is accomplished by supporting the flows of fresh organic matter in the soil and the rotation of the root system of plants in close interaction with other components of the biota, the air and the water exchange between the biotic and the abiotic soil.
The law of the priority role of the humus formation and accumulation process is based on ecological and evolutionary genetic principles and implies the unidirectional increase and enlarged reproduction of the natural fertility of the chernozem and the increase of the bioproductivity of agroecosystems.