METHOD OF DETERMINING CONTENT OF NUTRIENT ELEMENTS IN READILY SOLUBLE ORGANIC SUBSTANCES OF SOIL

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 rural u0445u043eu0437u00a0u0439u0441u0442u0432u0443, namely to chemistry and u043fu043eu0447u0432u043eu0432u0435u0434u0435u043du0438u044e, and can be used u0434u043bu00a0 calculation rules u043fu043eu0441u0442u0443u043fu043bu0435u043du0438u00a0 organic soil thi the ets and the rules of mineral fertilizers. the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 - improving the accuracy of the method.the method includes u043bu0435u0433u043au043eu0440u0430u0437u043bu0430u0433u0430u0435u043cu044bu0445 organic substances from the soil samples by u0446u0435u043du0442u0440u0438u0444u0443u0433u0438u0440u043eu0432u0430u043du0438u00a0 u0432u043eu0437u0434u0443u0448u043du043eu0441u0443u0445u043eu0433u043e grinded in liquid u0442u00a0u0436u0435u043bu043eu0439 density 1,80,05 g / cm3, the complete separation of organic residues from drugs, repeated centrifugation a faction in the u0442u00a0u0436u0435u043bu043eu0439 fluid at the density of 1,40,05 g / cm3, separating it from the light fraction.the definition of the following washing and u0432u044bu0441u0443u0448u0438u0432u0430u043du0438u00a0 elements u043fu0438u0442u0430u043du0438u00a0 known methods.