Sajdak R. V., Tsvej Ja. P., Tarariko Ju. O.
Pages: 59-65.

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Abstract

The purpose. To carry out an analysis of climatic changes in the central part of the Forest-Steppe, to justify the feasibility of restoring irrigated drainage systems. Methods. Assessment of changes in the agrometeorological resources of the territory was carried out by the method of mathematical-statistical analysis of complex indicators of heat and moisture conditions: climate water balance and hydrothermal coefficient. The stationary experiment data were processed by the methods of system generalization, correlation, economic, calculation, and comparative analyses. Results. The climate of the region is determined by a sufficient level of heat resources and unsustainable moisture. Due to a steady increase in the temperature regime, the supply of active air temperatures increased from 2880 °C to 3300-3500 °C, the total annual deficit of the water balance increased to 150 mm. As a result, in 32% of cases, that is, 3 years out of 10, in the region strong and moderate arid conditions of the growing season are observed. Fluctuations in meteorological conditions over the years directly influence the yield of field crops, in particular, winter wheat and sugar beet. Years with high crop yields are characterized by close to optimal levels of natural moisture supply. It has been established that the coefficient of variation of winter wheat yield over the years depending on the predecessor and the background of fertilizer can reach 39, sugar beet — 41%. Conclusions. In the forest-steppe zone, the maximum realization of the potential of the existing agrometeorological (heat, light) and chemical-technogenic resources is possible only if the water regime is regulated with the obligatory consideration of other factors determining a high level of effective soil fertility. So, the natural background of the typical deep low-humus chernozem in the Right-Bank Forest-Steppe provides the yield of winter wheat at the level of 4 t/ha. With the improvement of nutrition and moisture conditions, the maximum crop yield increases 1.7 times, and with the optimization of all factors, it can be increased 2.5 times.

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Key words: agrometeorological resources, winter wheat, productivity, optimization, moisture supply.

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References

1. Intehrovane upravlinnia vodnymy i zemelnymy resursamy na meliorovanykh terytoriiakh. (2016). [Integrated water and land management in the reclaimed territories]. Monograph. Kyiv: Agrarian Science. [In Ukrainian].
2. Kontseptsiia efektyvnoho silskohospodarskoho vykorystannia zemel humidnoi zony Ukrainy. (2014). [Concept of effective agricultural land use in the humid zone of Ukraine]. Kyiv: Edelweiss. [In Ukrainian].
3. Kontseptsiia vidnovlennia ta rozvytku zroshennia u pivdennomu rehioni Ukrainy. (2014). [The concept of renewal and development of irrigation in the southern region of Ukraine]. Kyiv: Komprynt. [In Ukrainian].
4. Kontseptsiia efektyvnoho vykorystannia osushuvanykh zemel humidnoi zony Ukrainy (naukovi zasady). (2015). [The concept of effective use of the dehumidified lands of the humid zone of Ukraine (scientific basis)]. Kyiv: Komprynt. [In Ukrainian].
5. Lysenko, M. M. (2017). Meliorovani ahroekosystemy [Reclaimed agroecosystems]. Nizhyn: PP. [In Ukrainian].
6. Romashchenka, M. I., Vozhehovoi, R. A., Shatkovskoho, A. P. (eds). (2017). Naukovi zasady rozvytku ahrarnoho sektora ekonomiky pivdennoho rehionu Ukrainy [Scientific bases of development of agrarian sector of economy of the southern region of Ukraine]. Kherson: OLDI-PLIuS. [In Ukrainian].
7. Bioenerhetychni zroshuvani ahroekosystemy. (2010). [Bioenergy irrigated agroecosystems]. Kyiv: DIA. [In Ukrainian].
8. Formuvannia bioenerhetychnykh ahroekosystem v zoni Polissia Ukrainy. (Rekomendatsii). Naukovo-tekhnolohichne zabezpechennia ahrarnoho vyrobnytstva Livoberezhnoho Polissia. (2012). [Formation of bioenergy agro-ecosystems in the Polesie region of Ukraine. (Recommendations). Scientific and technological support of agricultural production of the Left Bank Polesie]. Kyiv: DIA. [In Ukrainian].
9. Bioorhanichni systemy zemlerobstva v zoni osushennia. (Rekomendatsii). (2014). [Bio-organic farming systems in the areadrainage. (Recommendations)]. Kyiv: DIA. [In Ukrainian].
10. Formuvannia system ahrarnoho vyrobnytstva na osushuvanykh zemliakh Tsentralnoho Polissia. (Rekomendatsii). (2016). [Formation of systems of agrarian production on the drained lands of Central Polissya. (Recommendations)]. Kyiv: Komprynt. [In Ukrainian].
11. Romashchenko, M. I., Saydak, R. V., & Matyash, T. V. (22-27 July 2019). Development of irrigation and drainage as the basis of sustainable agriculture in Ukraine in climate change. IX International scientific and technical conference “Modern problems of water management, environmental protection, architecture and construction”. (pp. 243-250). Georgia.
12. Tarariko, Yu. O., Saidak, R. V., Soroka, Yu. V., & Vitvitskyi, S. V. (2015). Raionuvannia terytorii Ukrainy za rivnem zabezpechenosti hidrotermichnymy resursamy ta obsiahamy vykorystannia silskohospodarskykh melioratsii [Zoning of the territory of Ukraine by the level of provision of hydrothermal resources and volumes of utilization of agricultural reclamation]. Kyiv: Komprynt. [In Ukrainian].
13. Tarariko, Yu. O., Soroka, Yu. V., Saidak, R. V., & Lukashuk, V. P. (2019). Stan ta perspektyvy rozvytku ahrarnoho vyrobnytstva v Lisostepu v umovakh zmin klimatu [The state and prospects of agricultural production in the forest-steppe in the face of climate change]. Bulletin of Agricultural Science, 6, 52-59. doi: 10.31073/agrovisnyk201906-08. [In Ukrainian].
14. Nalichie i raspredelenie zemelnogo fonda v Ukrainskoy SSR. (1987). [Availability and distribution of land fund in the Ukrainian SSR]. Kiev: GOSAGROPROM USSR. Land Use and Land Management. [In Russian].
15. Derzhavnyi zemelnyi kadastr Ukrainy. (1994). [State Land Cadastre of Ukraine. Kyiv]. Kyiv: State Committee of Ukraine for Land Resources. [In Ukrainian].
16. Statsionarni polovi doslidy Ukrainy. Reiestr atestativ. (2014). [Stationary field experiments of Ukraine. Register of certificates]. Kyiv: Agrarian Science. [In Ukrainian].
17. Lakin G. F. (1990). Biometriya [Biometrics]. Moscow: High School. [In Russian].