METHOD FOR PREPARATION SAMPLES OF SOIL FOR DETERMINATION HUMUS IN THEM

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to chemistry and can be used u0434u043bu00a0 u0430u0433u0440u043eu0445u0438u043cu0438u0447u0435u0441u043au043eu0433u043e analysis of soils. the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 acceleration method.u0434u043eu0441u0442u0438u0433u0430u0435u0442u0441u00a0 u043fu043eu0441u0442u0430u0432u043bu0435u043du043du0430u00a0 purpose that, in the method, including selection of large roots and u043fu043eu043bu0443u0440u0430u0437u043bu043eu0436u0438u0432u0448u0438u0445u0441u00a0 plant residues with tweezers, transmission, air dry oh the soil through a sieve with holes 1 mm in diameter, the smaller the roots and other plant residues by means of electric u0441u0442u0435u043au043bu00a0u043du043du043eu0439 sticks, chafing and u043fu0440u043eu0441u0435u0432 soil through sieve holes with diameters of 0.25 mmthe selection of soil u043fu0440u043eu0441u0435u00a0u043du043du043eu0439 hinge u0434u043bu00a0 analysis.after u043fu0440u043eu0441u0435u0438u0432u0430u043du0438u00a0 soil through sieve holes with diameter of 1 mm soil further sifting through a sieve with the diameter of holes in 0.1 mm of soil u043eu0441u0442u0430u0432u0448u0435u0439u0441u00a0 at all. select small roots and u043fu043eu043bu0443u0440u0430u0437u043bu043eu0436u0438u0432u0448u0438u0435u0441u00a0 residues by u0441u0442u0435u043au043bu00a0u043du043du043eu0439 chopsticks, after which the soil, remove seeds and white flesh in the mortar pass through a sieve with a diameter of u043eu0442u0432u0435u0440u0441u0442u0438 in 0.25 mm, u043eu0431u044au0435u0434u0438u043du00a0u044eu0442 part samplespassing through a sieve holes with diameter of 0.1 mm, and a mixed model using u0434u043bu00a0 analysis. the accuracy of u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 humus in the soil u0441u043eu0434u0435u0440u0436u0430u043du0438u00a0 in preparing samples u0434u043bu00a0 analysis on the prototype and the proposed method significantly u0440u0430u0437u043bu0438u0447u0430u0435u0442u0441u00a0, and proposed to u043fu043eu0441u043eu0431 u043fu043eu0437u0432u043eu043bu00a0u0435u0442 reduce time for training samples u0434u043bu00a0 analysis of 2.5 times. 2, table 2).