Change of physical properties of southern carbonate chernozems at various cultivation systems in Northern Kazakhstan

Васильченко Николай Иванович, Grigoriy Aleksandrovich Zvyagin

2016

Data confidence 70 medium

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Abstract

Contradictory data about impact of the minimum and zero cultivation on physical properties of southern chernozems (Chernozem) of heavy particle size distribution have caused the necessity of their studying on the territory of Akmola region. Researches of physical properties of southern carbonate chernozems were conducted based on comparison of soils physical properties the virgin site with pilot allotments of deep and minimum cultivation of land, direct crops and zero technology. Reduction of content physical clay particles and silt in comparison with the virgin site revealed in the upper layer of 0-10 cm in case of all above-stated handlings. Mechanized conversions cause the activation of profile differentiation with regard to silty fraction. Descending migration from the arable horizon to subarable horizon happens in case of deep cultivation of land. This migration from layer of 0-10 cm to underlying arable layer of 10-26 cm happens in case of minimum and zero cultivation of land. The greatest deterioration in addition density of plougland in a layer of 0-10, 10-20 and 20-30 cm observe in case of the minimum and zero cultivation of land.