Annotation

Purpose: to assess the suitability of collector-drainage water (CDW) for irrigation, its impact on the soil-reclamation state of the rice irrigation system. 

Materials and methods. The object of the study is collector-drainage water from the outlet collector of the rice irrigation system, as well as CDW diluted with water from the irrigation canal in a ratio of 1:1000, respectively. Soil-reclamation assessment of water suitability for irrigation was carried out by the following indicators: total mineralization, irrigation properties according to the Staebler coefficient, salinization hazard rate, potential salinity index, SAR value, risk of magnesium and sodium alkalinization. 

Results and discussion. The mineralization of CDW was 3146 mg/dm³, which characterizes them as completely unsuitable for irrigation. The ecological and reclamation assessment showed that the processes of salinization, sodium alkalinization, and accumulation of toxic salts began to develop in the soil when irrigated with such water. Dilution of CDW with irrigation water in a ratio of 1:1000 will lead to a decrease in mineralization by 4.15 times. The Staebler coefficient increases by 3.5 times, which indicates an improvement in water quality. However, even with a thousand-fold dilution of the studied collector-drainage water with fresh irrigation water, it is impossible to state its suitability for irrigation unambiguously. The assessment of diluted water by the indicator “salinization hazard rate” indicates its limited suitability for irrigation, and by the indicator “potential hazard index” – complete unsuitability. 

Conclusions. The conducted soil and reclamation assessment showed the unsuitability of collector-drainage water from the outlet canal of the rice irrigation system for reuse for irrigation. With a thousand-fold mixing of the studied CDW with fresh irrigation water, a sufficient dilution effect is not achieved, which indicates the need to develop and implement a technology for their purification.

For quoting

Milchenkova D. V. Assessment of the collector-drainage water suitability for irrigation, their impact on soil-reclamation state of the rice irrigation system. Ways of Increasing the Efficiency of Irrigated Agriculture. 2025;96(2):83–93. (In Russ.).

Bibliography

1. Atakanov A.J., Karabaev N.A., Khalimov D.P., 2020. Prospects for reuse of collector-drainage water for crop irrigation. ISJ Theoretical & Applied Science, no. 3(83), pp. 458-463, DOI: 10.15863/TAS.2020.03.83.86, EDN: DRGCCF.

2. Isaev S.Kh., Khaidarov B., 2018. Ispol'zovanie kollektorno-drenazhnykh vod dlya orosheniya v malovodnye gody [Collector-drainage water use for irrigation in dry years]. EUROPEAN RESEARCH: sb. statey XVI Mezhdunar. nauch.-prakt. konf. V 2 ch. Ch. 1 [EUROPEAN RESEARCH: Coll. Art. of the XVI International Scientific Practical Conference. In 2 parts. part 1]. Penza, Science and Education (IP Gulyaev G.Yu.) Publ., pp. 114-117, EDN: UVUELA. (In Russian).

3. Duanbekova A.E., Sultanbekova P.S., Sarkynov E.S., Karimova G., 2022. Ispol'zovanie kollektorno-drenazhnykh vod dlya orosheniya sel'skokhozyaystvennykh kul'tur [Collector-drainage water use for crop irrigation]. Tekhnicheskoe obespechenie innovatsionnykh tekhnologiy v sel'skom khozyaystve: sb. nauch. st. Mezhdunaodnoy nauchno-prakticheskoy konferentsii [Technical Support of Innovative Technologies in Agriculture: Coll. Art. of International Scientific Practical Conference]. Minsk, BSATU, pp. 477-481, available: https://rep.bsatu.by/handle/doc/18006 [accessed 24.04.2025] (In Russian).

4. Kireycheva L.V., Suprun V.A., 2023. Ochistka drenazhnykh vod – vazhnoe napravlenie vodosberezheniya v oroshaemom zemledelii [Drainage water treatment is an important area of water conservation in irrigated agriculture]. Izvestiya Nizhnevolzhskogo agrouniversitetskogo kompleksa: nauka i vysshee professional'noe obrazovanie [Proceed. of the Lower Volga Agro-University Complex: Science and Higher Education], no. 2(70), pp. 65-71, DOI: 10.32786/2071-9485-2023-02-07, EDN: MXNYVU. (In Russian).

5. Kireycheva L.V., 2018. Drenazhnye vody kak al'ternativnye vodnye resursy dlya orosheniya [Drainage water as an alternative water resource for irrigation]. Melioratsiya i vodnoe khozyaystvo [Land Reclamation and Water Management], no. 4, pp. 13-18, EDN: XYTKNN. (In Russian).

6. Zhaparkulova E.D., Nabiollina M.S., Kalieva K., 2019. Vliyanie mineralizatsii kollektorno-drenazhnykh vod na dolyu ikh uchastiya v orositel'noy norme [The effect of mineralization of collector-drainage waters on share of its participation in irrigation norm]. Nauka i mir [Science and World], no. 7-1(71), pp. 51-55, EDN: OBOLQB. (In Russian).

7. Drovovozova T.I., Panenko N.N., Manzhina S.A., 2020. Otsenka prigodnosti vody iz otkrytykh kollektorov Semikarakorskogo rayona Rostovskoy oblasti dlya orosheniya [Assessment of the suitability of water from open collectors of the Semikarakorsk district Rostov region for irrigation]. Nauchnyy zhurnal Rossiyskogo NII problem melioratsii [Scientific Journal of the Russian Scientific Research Institute of Land Improvement Problems], no. 3(39), pp. 154-169, DOI: 10.31774/2222-1816-2020-3-154-169, EDN: JXWLRU. (In Russian).

8. Podovalova S.V., Volkova N.E., Ivanyutin N.M., 2023. Kompleksnaya otsenka prigodnosti vodnykh resursov dlya orosheniya [Comprehensive assessment of the suitability of water resources for irrigation]. Prirodoobustroystvo [Environmental Engineering], no. 5, pp. 13-19, DOI: 10.26897/1997601120235-13-19, EDN: AKCDHW. (In Russian).

9. Podovalova S.V., Volkova N.E., Popovich V.V., Terleev V.V., 2023. Analiz metodik otsenki prigodnosti vody dlya tseley orosheniya [Analysis of methods for assessing the suitability of water for irrigation purposes]. Agrofizika [Agrophysics], no. 4, pp. 57-66, DOI: 10.25695/AGRPH.2023.04.08, EDN: BNAPJX. (In Russian).

10. Babaeva K.S. Otsenka kachestva orositel'noy vody [Assessment of Irrigation Water Quality], available: https://direct.farm/content/257/2575d1f6d94d4a2cbce53b774 b1c75531041898.pdf [accessed 04.24.2025] (In Russian).