The Effect of Prolonged Irrigation on Soil-amelioration State of the Aley River Steppe in Altai Krai
On the basis of many years of research conducted at the Aley River irrigation system and generalization of literary materials, the impact of irrigation on soil fertility, composition and properties of chernozemic, meadow chernozemic and chernozemic meadow soils, their water and salt regime, and crop productivity has been established. A comprehensive assessment of the long-term impact of irrigation on the change in the hydrophysical and chemical properties of soils and the ecological and reclamation state of the irrigated area is given. The influence of long-term irrigation on the nature and direction of the dynamics of groundwater and salt levels in soils is revealed. The water and salt balance of soils has been compiled, depending on the characteristics and duration of irrigation. It is proved that in conditions of insufficient drainage of the territory, non-compliance with scientifically grounded irrigation regimes, rational irrigation techniques, violation of agricultural technology and crop rotation during long-term irrigation leads to the deterioration of some properties of soils, their salinization and alkalination. Regularities and changes in soil-amelioration conditions during prolonged irrigation of land have been established.
 Aidarov, I.P. (1985). Regulation of water-salt and nutrient regimes of irrigated lands. Moscow: Agropromizdat, 275 p.
 Blagoveshchenskii Yu.N., Samsonova, V.P. (2016). Bayesian Approach in Agrochemical Surveys. Moscow University Soil Science Bulletin, vol. 71, no. 4-5, pp. 147–150. ISSN 0147-6874.
 Burlakova, L.M. (1986). Problems of changing chernozems during irrigation. Development of land reclamation in the Altai Krai. Barnaul, p. 21–24.
 Denisov, V.I. (2019). Acceleration of the Development of Agriculture in the Russian Economy by Increasing the Efficiency of the State Support of Rural Commodity Producers. Studies on Russian Economic Development, vol. 30, no. 1, pp. 66–74. ISSN 1075–7007.
 Efimov, A.E., Sitdikova, Yu.R., Dobrokhotov, A.V., Kozyreva, L.V. (2018). Monitoring Evapotranspiration in an Agricultural Field and Determination of Irrigation Rates and Dates by Automated Mobile Field Agrometeorological Complex. Water Resources, vol. 45, no. 1, pp. 133–137. ISSN 0097-8078.
 On Land Reclamation. Federal Law of 10 January 1996 no. 4-ФЗ.
 Federal target program ``Development of land reclamation of agricultural lands of Russia for 2014–2020''.
 Golovanov, A.I. et al. (2015). Land reclamation. Moscow: Lan, 816 p.
 Ilinskaia, I.N. Ignatiev, V.M. (2013). Calculation of environmentally safe water demand for irrigation of crops. Bulletin of the Russian Academy of Agricultural Sciences, no. 5, pp. 26–28.
 Kachinskii, N.A. (1965). Soil physics. Part 1. Moscow: Higher school, 324 p.
 Kostiakov, A.N. (1933). Fundamentals of land reclamation, 3rd ed. Textbook. Moscow; Leningrad: Gos. Izd-vo kolkhoz. i sovkhoz. Lit., 887 p.
 Olgarenko G.V. (2015). A technique for the operational diagnosis of degradation of reclaimed soils to justify complex measures for the conservation and expanded reproduction of fertility. Scientific edition FSBI VNII ``Raduga''. Kolomna: IP Vorobyov O.M., 52 p.
 Reclamation Problems. Ministry of Agriculture of the Russian Federation. Retrieved from: http://www.mcx.ru/
 Sorokin, A.S., Kust, G.S. (2018). Diagnostics of Compaction of Arable Soils in the Transvolga Region in Saratov Oblast. Moscow University Soil Science Bulletin, vol. 73, no. 1, pp. 1–5. ISSN 0147-6874.
 State program of the Altai Krai ``Development of land reclamation of the Altai Krai agricultural lands''.
 Vorobeva, R.P. (2003). The history of the development of land reclamation in Altai. Barnaul: Azbuka, 244 p.