This article presents data on the evolution of irrigated meadow and meadow takyr soils, humus reserves in Gijduvan district of Bukhara region. In 1984, the humus content in the arable layer of irrigated meadow soils was 1.14% with a reserve of 38.8 t/ha. In 2022, the humus content was 1.12% with a reserve of 43.5 t/ha. In 1984, the humus content in meadow takyr soils was 0.85%, reserves-23.6 t/ha, in 2022 the humus content was 0.82%, reserves-27.9 t/ha. Over 38 years, humus reserves in meadow soils increased by 4.7 t/ha, and in meadow-barren soils - by 4.3 t/ha.

Desert zone, irrigated soils, meadows

Abdurakhmanov N.Y., Sobitov U.T., Qoraev A.X., Mansurov Sh.S., Kalandarov N.N. The current state and some problems of increasing the fertility of irrigated soils of the Tashkent oasis. Modern problems of soil science and agriculture. Collection of materials of the republican scientific conference. Ferghana. - 2019. pp. 165-167.

Artikova H.T. General and some water-physical properties of alluvial soils of irrigated meadows of the Bukhara oasis and their significance // “O’zMU Xabarlari” journal Tashkent - 2018. - No.3/1. pp. 47-51.

Artikova H.T. Ecology, ecological condition and soil fertility of the Bukhara oasis: abstract of the dissertation of the Doctor of Biological Sciences. Tashkent. - 2019. - 62 p.

Artikova H.T. Ancient irrigated meadow-alluvial soils widespread in the Bukhara oasis under the influence of irrigation // collection of materials of the V–th Congress of the Society of Soil Scientists and Agrochemists of Uzbekistan. Tashkent, 2010. pp. 51-55.

Artikova H.T., Yunusov.R., To’ymurodova D, Istamova M. Factors of increasing the fertility of irrigated meadow soils of the Bukhara region since ancient times // collection of materials of the scientific and practical conference on improving soil fertility, soil protection, improving the efficiency of land use and land reclamation. - Bukhara. - 2015. pp. 189-191.

Ivanov I.V., Alexandrovsky A.L., Makeev A.O., Bulgakov D.S., Abakumov E.V., Arkhangelskaya T.A., Evolution of soils and soil cover. – Moscow. “GOES”. – 2015. p 915.

Qo’ziyev R., Abduraxmonov N., Sobitov O‘. Description of irrigated soils of the Mirzacho’l oasis. // Agroilm. - 2018. - No. 2. pp 88-89.

Qo’ziyev and et al. "Methodological guidelines for the cultivation of irrigated soils of the Republic of Uzbekistan". Normative documents on land use, land management and land cadastre. Tashkent, 2005. 24 p.

Qo’ziyev R.Q., Abduraxmonov N.Y. Evolution and fertility of irrigated soils. - Tashkent: “Navro’z", 2015. - 208 p.

Qo’ziyev R.Q., Abduraxmonov N.Y., Ismonov A., Maqsudov J.M., Akramov I.A., Mengliqulov E.E. "Instructions for conducting a soil survey and compiling soil maps for maintaining the state land cadastre." Tashkent, 2009. - 51 p.

Qo’ziyev R.Q., Abduraxmonov N.Y., Xalilova N.J., Sobitov O‘.T., Raximberdiyev O‘. Some regional features of the soils of the Boz oasis. ”Topical issues of increasing soil fertility and crop yields". Republican Scientific and Practical Conference. - Vol., - 2014. pp. 124-130.

Qo’ziyev R.Q., Ismanov A.J., Abduraxmanov N.Y., Ramazanov B.R.. Monitoring studies of coastal irrigated soils of the Aral. //Journal of agrochemical protection and plant quarantine. - Tashkent, 2018. - No.5. pp 9-10.

Qo’ziyev R.Q. Intensity and nature of soil evolution. Scientific reports to Fardu. - 2015. -No. 1. pp 34-38.

Qo’ziyev R.Q., Xalilova N.J., Raximberdiyev O‘. Human activity is a leading factor in the formation of irrigated soils. “Issues of fertility, protection and effective use of soils of Uzbekistan”. Republican scientific and practical conference collection of scientific articles. – T., - 2013. pp 17-20.

Qurvontoyev R., Norqulov Z.E., Fayziyev K.I. Mechanical and microaggregate composition of soils of the Khorezm milestone // Bulletin of the Khorezm Academy of Ma’mun. Xorazm, - 2019. -No.6-1. pp 66-71.

Kurvontoyev R., Fayziyev K.I. Granulometric composition of meadow soils of the Yangibazar district of the Xorazm oasis / Modern state and problems of rational use of Siberia. Omsk, 2020. pp. 117-122.

Methods of agrochemical analyses of soils and plants of Central Asia". Tashkent, 1977. - 260 p.

Methods of agrochemical, agrophysical and microbiological research in irrigated cotton areas Tashkent, 1963. - 439 p.

Nazarova S. M. Modern agrophysical state of soils of irrigated meadows of the Bukhara oasis. Abstract of the dissertation of the Doctor of Philosophy (PhD) in the field of agricultural sciences. T.: 2019. - pp. 5-20.

Turdimetov Sh., Musurmanov A., Ne’matov X. Soil changes in irrigated meadow-gray soils of the Mirzacho’l oasis. // O’zbekiston milliy universiteti xabarlari, - №3/1. – 2020. pp 130-134.,

Bukovsky-Reyes S., Isaac M.E., Blesh J. Effects of intercropping and soil properties on root functional traits of cover crops Agric. Ecosyst. Environ., 285 (2019), Article. 106614.

Isaac M., Isakson S., Dale B., Levkoe C., Hargreaves S., Méndez V., Wittman H., Hammelman C., Langill J., Martin A. Agroecology in Canada: towards an integration of agroecological practice, movement, and science. Sustainability, 10 (9) (2018), p. 3299.

Khanal U., Stott K.J., Armstrong R., Nuttall J.G., Henry F., Christy B.P., Mitchell M., Riffkin P.A., Wallace A.J., McCaskill M., Thayalakumaran T., O'leary G.J. Intercropping-evaluating the advantages to broadacre systems. Agriculture, 11 (5), (2021), p. 453.

Raseduzzaman Md, Jensen E.S.. Does intercropping enhance yield stability in arable crop production? A meta-analysis. Eur. J. Agron., 91 (2017). pp. 25-33.

Romaneckas K., Adamavičienė A., Šarauskis E., Balandaitė J. The impact of intercropping on soil fertility and sugar beet productivity Agronomy, 10 (9). (2020), p. 1406.