Abstract
The article presents the general physical properties of irrigated meadow-swamp soils, meadow–sierozem soils, and typical sierozems widely distributed in the Central Fergana area of the Fergana region, the Mirzaobod district of the Syrdarya region, and the Jomboy district of the Samarkand region. The study also outlines the variations in bulk density and total porosity depending on the degree of soil gypsification, as well as their spatial differences across the regions.
References
1. Umarov, M. U., & Kurbantaev, R. (1987). Povyshenie plodorodiya oroshaemykh pochv putem regulirovaniya ikh fizicheskikh svoystv [Improving the fertility of irrigated soils by regulating their physical properties]. Tashkent: Fan. 106 p. (in Russian).
2. Abdullayev, S., Tursunov, L., & Qurvantoyev, R. (2004). O‘zbekistonda sug‘oriladigan tuproqlar unumdorligini oshirishda uning fizik va struktura holatini yaxshilashga oid tavsiyalar [Recommendations for improving the physical and structural condition of irrigated soils in Uzbekistan]. Pochvovedenie i agrokhimiya, 21. 63 p. (in Uzbek).
3. Norqulov, U. (2018). Sho‘rxok gipsli tuproqlar melioratsiyasi [Melioration of saline gypsum soils]. Tashkent. 39 p. (in Uzbek).
4. Rozhkov, V. A., Bondarev, A. G., Kuznetsova, I. V., & Rakhmatulloev, Kh. R. (2002). Fizicheskie i vodno-fizicheskie svoystva pochv [Physical and water-physical properties of soils]. Moscow: MGUL. 73 p. (in Russian).
5. Qurvantayev, R., & Musurmonov, A. (2010). Tuproq fizikasi fanidan o‘quv-uslubiy majmua [Educational-methodical complex for the course “Soil Physics”]. 121 p. (in Uzbek).
6. Turg‘unov, M. M. (2019). Mirzacho‘l vohasi sug‘oriladigan tuproqlari xossalarining lazerli tekislash ta’sirida o‘zgarishi [Changes in the properties of irrigated soils of the Mirzachol oasis under the influence of laser land leveling]. PhD dissertation abstract. Tashkent. 46 p. (in Uzbek).
7. Tursunov, L. (1988). Tuproq fizikasi [Soil physics]. Tashkent: Mehnat. pp. 101–167. (in Uzbek).
8. Sobitov, O‘., Abduraxmonov, N., & Yuldoshev, I. Q. (2022). Markaziy Farg‘ona sug‘oriladigan o‘tloqi saz tuproqlarining umumiy fizik xossalari [General physical properties of irrigated meadow–marsh soils of Central Fergana]. Tuproqshunoslik va agrokimyo jurnali, (4), 59–63. (in Uzbek).

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Copyright (c) 2026 Nodirjon Abdurakhmonov, Ulmasboy Sobitov (Author)
