THE VARIABILITY OF QUALITATIVE COMPOSITION OF ORGANIC PART OF THE MEADOW CHERNOZEM UNDER DIFFERENT FERTILIZING SYSTEMS

Abstract

Investigated the content o f total humus and quality o f organic part of the soil. Namely, the content o f the actual content o f humic substances and detritus in the meadow-chernozem soil under different fertilization systems. Based on the behavior o f the studies found that to increase the total content o f humus in meadow chernozem soil most favorable it is organo-mineral system fertilizer. Application only organic fertilizers the humus content increases m ainly in the upper soil layer. The mineral system fertilizer acts on the formation and accumulation o f humus in general a little bit worse, but to a greater depth.The content o f a component such as detritus, is the basis for the stability o f macroaggregates o f chernozem, with organo- mineral fertilizer systems is high, if plenty o f organic and mineral fertilizer the higher content o f detritus in the soil organic matter. And this applies not only 0-10 cm soil layer, but for the entire thickness o f the soil o f study. Applying on meadow chernozem soils exclusively organic or mineral fertilizers, occurs to accumulation o f the actual humic substances and detritus in smaller amounts.The composition o f the various components o f soil organic m atter varies at different ways o f fertilizer. This greatly affects the o f structure formation and on the content o f mineral nutrients for plants. And consequently the regulation o f nutrient regime, water regime, air regime and thermal regime in soil.