Change of the content and composition of mobile humic substances in sod-podzolic soils under the influence of different systems of fertilization | Изменение содержания и состава подвижных гумусовых веществ в дерново-подзолистых почвах под влиянием различных систем удобрения
2012
Lapa, V.V. | Seraya, T.M. | Bogatyreva, E.N. | Mezentseva, E.N. | Biryukova, O.M., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
Stable reproduction of humus in arable soils is determined with textural composition of soils themselves and directly depends on physical clay content of soils. Dynamics of humic composition of the soils and stability of humus to the influence of natural and anthropogenic factors is determined with quantitative correlations of mobile and inert humic substances. During evaluation of changeability of humic substances content in sod-podzolic soils under the influence of fertilizing systems, estimation of qualitative composition of soil appears one of the most important characteristics. Priority direction of evaluation of humic content appears studying of humic acids' composition. The influence of different systems of fertilization on the content of mobile humic substances and their structure in sod-podzolic soils is studied. The most effective way to increase the content of mobile humic acids as a part of mobile humus is the use of organic and organic-mineral systems of fertilization combined with straw ploughing.
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