Влияние длительного применения удобрений на лабильность гумусовых веществ дерново-подзолистой легкосуглинистой почвы
2009
Lapa, V.V. | Seraya, T.M. | Bogatyreva, E.N. | Biryukova, O.M., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
The influence of the long-term application of manure and mineral fertilizers on the mobile humus content of sod-podzol light loam soils is analyzed. The humus mobility is measured in different conditions: without fertilizers, NPK application, manure application, mineral and organic fertilizers application. The lime application lead to the decline of the mobile carbon. As a result of carrying out researches in long-term field experiments on sod-podzolic light loam soil it is established that the liming of soil decreased the absolute and relative contents of carbon of labile fraction humus substances, on the average, by 1003 mg/kg and 9.91 %. The application of mineral fertilizers promoted the increase both in absolute and relative contents of mobile humus substances. Manure in a dose of 12.5 t/ha crop rotation areas reduced the relative share of mobile humus compounds in increasing their absolute contents. The greatest supplies of mobile compounds of humus were provided by organic-mineral fertilization: in strong acid soil – 11592 kg/ha, by soil acidity optimization – 9067 kg of carbon per 1 ha
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