Вплив добрив на гумусовий стан чорноземів типових дослідного поля Державного біотехнологічного університету

Abstract

The influence of various fertilizer application systems on the humus state of chernozems of typical medium-humus heavy loamy on loess in the conditions of the experimental field of the State Biotechnological University, located in the village of Dokuchaevske, Kharkiv district, Kharkiv region, was studied. It was found that the chernozem of typical fertilized areas has a higher content of total humus compared to the soil of the control variant (without fertilizers). Chernozem with an organic-mineral fertilization system is characterized by a higher humus content than for the soil of the variant with a mineral fertilizer system. Agricultural use of typical chernozem without the use of fertilizers contributes to the predominant accumulation of mobile humus in arable (0-20 cm) and partially subsoil (20-30 cm) soil layers. With depth, its content decreases quite sharply and already in the layer of 40-50 cm it is only 0.07%. The use of mineral fertilizers contributes to the growth of mobile humus content in the entire studied part of the soil profile.