The main part (about 50%) of the 4304.32 thousand hectares of irrigated land of our republic is saline soils to varying degrees, which reduces the overall productivity of agricultural crops in irrigated areas. This article provides detailed information on the irrigated soils of the Olot district and their properties. In addition, measures to improve soil fertility are presented.

Olot district, irrigated soils, mechanical composition of soils, Zarafshan River Delta, land reclamation, soil fertility, irrigation standards, salinity, parent rock, proluvial, alluvial, loess-like sands, groundwater, mineralization.

Developed by the State Committee of the Republic of Uzbekistan for Land Resources, Geodesy, Cartography and State Cadastre and the State Research Institute of Soil Science and Agrochemistry: “Methodological Guide for Mapping, Accounting and Determining the Standards of Salting-Out Soils”. 2014. 45-46 pp.

Umarov M. Physical Properties of Soils of New and Promising Irrigation Regions of the UzSSR. -Tashkent, “Science”, 1974, -280 p.

Kurvontoyev R., Khalberdiyeva M.R. Methods for Preventing Soil Clogging. // Theses of the doc. res. conf., - Guliston, 1994.- 228 p.

Kurvontoyev R. Methods for Increasing Soil Fertility. // Current Problems of Increasing Soil Fertility, Scientific Collection. -Tashkent, 1995. - P. 30-33.

Kurvantoyev R., Turgunov M., Musurmonov A. Issues of soil cultivation in increasing soil fertility, taking into account their agrophysical properties. // Scientific foundations of effective use of soil resources. Collection of articles, - Tashkent, 2011. - P. 142-148.

J.S. Sattorov. Concept of changes in the fertility of irrigated soils of Uzbekistan, its increase and protection. Scientific and practical seminar on the topic “Issues of protection and rational use of land resources in conditions of environmental change”. Tashkent. 2016. 70 p.

Atlas of soil covers of the Republic of Uzbekistan. Tashkent. 2010. 18-19 p.

Artikova Kh.T. Evolution, ecological state and fertility of soils of the Bukhara oasis. Author's ref. doc. diss. (DSc). –Tashkent, 2019. 62 p.

Gafurov K., Abdullayev S. Characteristics of the soil cover of the irrigated zone of the Bukhara region.- Tashkent: Publishing house "Fan", 1982.-130 p.

The state of reclamation of irrigated lands of Uzbekistan and their improvement. University Publishing House. 2018. 304 p.

Kurvantayev R., Nazarova S.M. Agrophysical state of irrigated meadow soils of the lower reaches of the Zarafshon oasis. –Bukhara.2021.- 142 p.

Nazarova S.M., Kurvantayev R. Soils of the Bukhara oasis / Scientific appendix "Agriculture of Uzbekistan" journal "Agro Ilm". -Tashkent, 2012. №3 (23). - P. 54-55.

Tursunov L. Water-physical properties and speed of salt restoration in irrigated soils of the Karakul oasis of the Bukhara region. Abstract. candidate. diss.- Tashkent. 1968.- 30 p.

Yuldosheva. Kh. Namozov. Kh. Current reclamation state of soils of irrigated areas and ways to increase their fertility by biological methods."Science and Technology", publishing house, 2020- pp. 284-298