Keywords:
- fertility
- humus
- salt reserves
- hydromorphic soils
- semi-hydromorphic soils
- ecological condition
Abstract
This article examines the degradation processes occurring in the irrigated soils of the Central Fergana region and their impact on soil meliorative conditions and fertility. The study showed that physical, chemical, and biological processes in meadow-marsh, meadow, transition-meadow, and desert-meadow soils are highly dynamic, while the content and reserves of humus and salts vary significantly depending on soil type. Salt accumulation and secondary salinization were identified as key factors worsening soil meliorative status. The increase in the C:N ratio during 1999–2023 indicates an improvement in the ecological condition of the soils. It is stated that the systematic application of meliorative measures, the use of organic fertilizers, the restoration of drainage functionality, and the effective organization of leaching practices are the main ways to reduce degradation processes in the irrigated soils of Central Fergana.
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