Keywords:
- irrigated meadow soils
- geomorphological regions
- mechanical composition
- humus
- nitrogen
- phosphorus and potassium
- morphological structure of soils
- degree and types of salinization
- CO2 carbonates
- gypsum
- settlement capacity
Abstract
The article presents new information about the state of soils and their properties, the mechanical composition of soils, the amount and reserves of humus and nutrients, as well as the types and degree of salinity, established as a result of comprehensive studies on the old-irrigated meadow soils of Mirzachul. The evolutionary changes taking place in them under the influence of irrigated agriculture are also outlined. It has been proven once again that the predominance of the amount of physical clay in the mechanical composition of hydromorphic soils occurs under the influence of the accumulation of silt particles in the soil profile as a result of prolonged irrigation. In field studies, it was established that the thickness of the humus layer is equal to the thickness of the agroirrigation layer on old-irrigated meadow soils. It was noted that in the soils of Mirzachul, agro-irrigation layers are dark brown, granular, moderately compacted, in some cases there is an abundant accumulation of roots.
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