Keywords:
- typical rain fed serozem
- perennial alfalfa
- micro- and macroagregate particles
- mechanical composition
- wheat
- crop rotation
- coarse and fine dust
- volumetric and specific gravity
- structure
Abstract
The article describes the influence in the crop rotation system on the microaggregate, macroaggregate and general physical properties of the experimental fields of perennial alfalfa, perennial wheat without fertilization, heavily washed rainfed typical gray soils with a southern exposure slope of 5-70, common in the Gallaarol region. In crop rotation and permanent fields sown with wheat without fertilizers in microaggregate compositions, the number of large dust particles (0.05-0.01 mm) along the section profile is 56-72 and 52-68 %. In the arable layer of fields, perennial alfalfa and unfertilized perennial wheat make up most of the soil agronomically valuable aggregates, the largest number of which is 66-92%. In the areas of crop rotation, the soil density along the profile varies between 1,30-1,46 g/cm3.
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