The article describes the enzymatic activity of the irrigated meadow soils of the north-eastern part of the Mirzachol oasis. Due to weak salinity of irrigated meadow soils, it was found that catalase, peroxidase, and polyphenoloxidase activity of enzymes belonging to the class of oxidases was high. These indicators were also observed in the activity of invertase and urease enzymes. It was observed that the activity of enzymes was high in all studied cuttings in the spring, and decreased in the fall. The activity of enzymes depends on the humus in the soil, the amount of nutrients, the mechanical composition, the amount of different fertilizers used, and the hydrothermal regime of the area.

Soil, microorganism, enzyme

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