Purpose: to identify factors enhancing the negative impact of long-term irrigation on soil fertility. Materials and methods. The influence of mineralization and quality of irrigation water on ordinary chernozems (Neklinovsky district), the level of groundwater table on the reclamation state and soil fertility of ordinary chernozems (Bagaevsky district of Rostov region), the structure of crop rotations was studied, and optimal moisture levels for different irrigation modes were established. Results. Long-term use of sulphate-sodium low-mineralized water led to the degradation of ordinary chernozems. They acquired the properties of medium alkaline and medium solonized soils: alkalinity – 1.29 mmol(eq)/100 g, solonetzicity – 7 % of exchangeable sodium from the total soil absorbing complex (SAC), soil bulk density – 1.34 t/m³, humus content decreased by 23 % during its transformation from fulvate-humate to humate-fulvate. The close ground waters table and their mineralization of 5 g/dm³ contributed to secondary salinization. Fertility reproduction is observed only with the introduction of organic fertilizers. The increase in humus content in the alfalfa-corn crop rotation was 0.68 % with the introduction of 60 t/ha of manure after 4 years of corn cultivation in comparison with the humus content after 3 years of alfalfa cultivation, and in the grain feed – 0.55 %. It was found that with an increase of irrigation rate up to 30 %, leaching of exchangeable calcium is observed with a simultaneous increase in the content of exchangeable sodium up to 4 % of the total SAC, which contributes to an increase in bulk density of ordinary chernozem to 1.38 t/m³. In the variant with over-irrigation, the humus content decreased by 0.22 % over 4 years of regular irrigation, and in the variant with the optimal and reduced by 40 and 60 % rates, its amount decreased from 0.04 to 0.07 %, as in dry land. Conclusions. The investigated factors enhance under certain conditions the negative impact of long-term irrigation on the properties of ordinary chernozem.
DOI: 10.31774/2222-1816-2020-4-1-22
long-term irrigation; crop rotations; fertility; ordinary chernozem; negative impact; soil properties.
Babichev, A. N. Factors enhancing the adverse effects of long-term irrigation on the ordinary chernozem properties / A. N. Babichev, L. M. Dokuchayeva, R. Ye. Yurkova // Scientific Journal of Russian Scientific Research Institute of Land Improvement Problems [Electronic resource]. – 2020. – № 4(40). – P. 1–22. – Mode of access: http:www.rosniipm-sm.ru/en/article?n=1156. – DOI: 10.31774/2222-1816-2020-4-1-22.
1 Naloichenko A.O., Atakanov A.Zh., 2009. Oroshenie kak glavnyy element effektivnogo regulirovaniya faktorov zhizni rasteniy [Irrigation as the Main Element of Effective Regulation of Plant Life Factors]. Bishkek, 16 p. (In Russian).
2 Zerbaliev A.M., 2006. Irrigatsionnaya eroziya pochvy pri slozhnom rel'efe s bol'-shimi uklonami mestnosti [Irrigation soil erosion on difficult terrain with big slopes]. Vestnik Dagestanskogo gosudarstvennogo tekhnicheskogo universiteta. Tekhnicheskie nauki [Bull. of Dagestan State Technical University. Technical Science], no. 12, pp. 150-152. (In Russian).
3 Vasiliev S.M., Subbotina M.A., Tupikin N.I., Kropina E.A., Finoshin A.B., 2010. Irrigatsionnaya eroziya pochv pri poverkhnostnykh sposobakh poliva: nauchnyy obzor [Irrigational Soil Erosion with Surface Irrigation Methods: scientific review]. Moscow, Meliovodinform Publ., 44 p. (In Russian).
4 Nesvat A.P., 2011. Vliyanie orosheniya na vodno-fizicheskie svoystva temno-kashtanovykh pochv [Influence of irrigation on the water-physical properties of dark chestnut soils]. Izvestiya Orenburgskogo gosudarstvennogo agrarnogo universiteta [Bull. of Orenburg State Agrarian University], iss. 32-1, vol. 4, pp. 57-58. (In Russian).
5 Shchedrin V.N., Dokuchaeva L.M., Yurkova R.E., 2018. [Negative soil processes during regular irrigation of various types of soils]. Nauchnyy Zhurnal Rossiyskogo NII Problem Melioratsii, no. 2(30), pp. 1-21, available: http:rosniipm-sm.ru/archive?n=542&id=543. (In Russian).
6 Sun H., Liu X., Zhang X., Ju Z., 2018. The long-term impact of irrigation on selected soil properties and grain production. Journal of Soil and Water Conservation, no. 73(3), pp. 310-320, DOI: 10.2489/jswc.73.3.310.
7 Vasiliev S.M., Domashenko Yu.E., 2016. Retrospektivnyy analiz izmeneniya pochvenno-meliorativnykh usloviy oroshaemykh pochv yuga Rostovskoy oblasti [Retrospective analysis of changes in soil and reclamation conditions of irrigated soils in the south of Rostov region]. Izvestiya Nizhnevolzhskogo agrouniversitetskogo kompleksa: nauka i vysshee profes-sional'noe obrazovanie [Bull. of Nizhnevolzhsky Agro-University Complex: Science and Higher Professional Education], no. 3, pp. 17-24. (In Russian).
8 Mačkić K., Pejić B., Nešić L., Vasin J., Mijić B., 2014. Chemical properties of chernozem influenced by irrigation. Research Journal of Agricultural Science, no. 46(2), pp. 139-146.
9 Bezdnina S.Ya., 1990. Reglamentirovanie i uluchshenie kachestva orositel'noy vody [Regulating and improving the quality of irrigation water]. Povyshenie kachestva orositel'noy vody: sbornik nauchnych trudov [Improving the quality of irrigation water: Proc. scientific works]. Moscow, Agropromizdat Publ., pp. 20-21. (In Russian).
10 Kolganov A.V. [et al.], 2000. Normy vodopotrebnosti i ekologicheski bezopasnye rezhimy orosheniya sel'skokhozyaystvennykh kul'tur na Severnom Kavkaze [Water Demand Rates and Environmentally Safe Irrigation Regimes for Agricultural Crops in the North Caucasus]. Moscow, Edel-M Publ., 152 p. (In Russian).
11 Shcheglov D.I., Semenov L.A., 2011. Vliyanie urovnya gruntovykh vod na svoystva i plodorodie pochv [Influence of groundwater level on properties and fertility of soils]. Perspektiva nauki [Perspective of Science], no. 5(20), pp. 18-19. (In Russian).
12 Kiryushina V.I., Ivanova A.L., 2005. Agroekologicheskaya otsenka zemel', proektirovanie adaptivno-landshaftnykh sistem zemledeliya i agrotekhnologiy: metod. rekomendatsii [Agroecological Assessment of Lands, Design of Adaptive Landscape Farming Systems and Agricultural Technologies: Methodological Recommendations]. Moscow, Rosinformagrotech Publ., 784 p. (In Russian).
13 Schedrin V.N., Balakay G.T., Dokuchaeva L.M., Yurkova R.E., Shalashova O.Yu., Tabala G.I., 2017. Rukovodstvo po kontrolyu i regulirovaniyu pochvennogo plodorodiya oroshaemykh zemel' [Guidelines for Control and Regulation of Soil Fertility of Irrigated Lands]. Novocherkassk, RosNIIPM Publ., 137 p. (In Russian).
14 Andreev G.I., Kozlechkov G.A., Andreev A.G., 2007. Ekologicheskoe sostoyanie oroshaemykh pochv na Nizhnem Donu: monografiya [Ecological State of Irrigated Soils in the Lower Don: monograph]. Dnepropetrovsk, 262 p. (In Russian).
15 Aydarov I.P., 2006. Ocherki po istorii razvitiya orosheniya v SSSR i Rossii [Essays on History of Irrigation in the USSR and Russia]. Moscow, MGUP Publ., 269 p. (In Russian).
16 Panov A.P., Mamontov V.G., 2001. Pochvennye protsessy v oroshaemykh chernozemakh i kashtanovykh pochvakh i puti predotvrashcheniya ikh degradatsii [Soil Processes in Irrigated Chernozems and Chestnut Soils and Ways to Prevent Their Degradation]. Moscow, Rosselkhozakademiya Publ., 253 p. (In Russian).
17 Dokuchaeva L.M., Yurkova R.E., 2012. Izmenenie napravlennosti pochvennykh protsessov pri snizhenii vodnoy nagruzki na oroshaemye zemli: nauchnyy obzor [Change in the Direction of Soil Processes with a Decrease in Water Load on Irrigated Lands: scientific review]. FSBSI “RosNIIPM”, Novocherkassk, 54 p., deposited in VINITI 07.07.12, no. 292-V2012. (In Russian).
18 Zimovets B.A., 1998. Otsenka degradatsii oroshaemykh pochv [Assessment of Degradation of Irrigated Soils]. Pochvovedenie [Soil Science], no. 9, pp. 1119-1126. (In Russian).
