DEPENDENCIES BETWEEN CHEMICAL, PHYSICAL AND OPTICAL PROPERTIES OF MUGAN PLAIN SOILS

The article deals with the relationship between chemical, physical and optical properties of Mugan Plain soils. It was determined that the integral reflection coefficient with chemical and physical properties of the main soil types of the Mugan Plain was the least in gray-brown and grass-gray soils, 31.09-40.3%, 31.1-38,0 respectively, depending on the profile. The highest amount of 5% was in gray-meadow and swamp-meadow soils and varied between 42.90-50.55% and 39.20-42.00%. Grass-marsh lands, distributed throughout the territory in the form of tala, are distributed in limited areas of the Mugan Plain, mainly in depressions, in places where groundwater is exposed, in the area of the Kura River. Meadow-marsh soils are characterized by a high content of humus and moisture, on which predominantly water-sensitive plants grow. The amount of humus in the upper layer (0-25 cm) reaches 4.05%, which is associated with the annual rotting of a large amount of plant mass. The amount of humus decreases with depth and reaches 0.90% at a depth of 1 meter. This distribution of humus is due to the fact that the bulk of roots and rhizomes are collected in this part of the soil profile. The reason for the lack of roots in the lower layers is the unfavorable air-water regime in the silt layer due to high humidity and a large amount of iron oxide, which negatively affects plants.

1. Gerayzade A.P., Jafarov A. M. On the problem of rational use of soil cover// Soils in the biosphere. Part Institute of Soil Science and Agrochemistry. September 10-14, Novosibirsk. - 2018. - Р. 195-198.

2. Kocherli S.A., Jafarov A.M., Gerayzade A.P., Guliev V.A., Samadova O.A. Relationship between physicochemical properties and spectrophotometric indicators of the main types of soils of the Shirvan Plain. Department of Biological and Medical Sciences of ANAS Collection of works of the Azerbaijan Soil Science Society, Volume XV, Baku, Elm 2019, p. 397-401.

3. Orlov D.S. Spectral reflectivity of soils and their components. -M.: Moscow State University Publishing House, 2001. 176 p.

4. Samofalova I.A. Laboratory - practical classes on chemical analysis of soil. - Perm, 2013. 133 p.

5. Mustafayev M.G. - Melioration state of irrigated saline soils of the Mugano-Salyan massif of the Kura-Araks lowland// Bulletin of the Belarusian State Agricultural Academy. - 2014. № 1. - P. 127-131.

6. Vadyunina A.F., Korchagina Z.A. Methods for studying the physical properties of soil. Agropromizdat, Moskva, 1986, 416 p.

7. Azizov G.Z. Scientific analysis of the water-salt balance of reclaimed soils of the Kur-Araz lowland and its results. Baku, "Elm", 2006, 260 p.

8. Gasanov Yu.Ch. “Monitoring of agrophysical properties of irrigated lands in Azerbaijan”Baku, "Elm", 2013, 230 p.

9. Belyaev B. I., Kazyak E. O., Khrushcheva E. O. Study of the seasonal dynamics of the spectral reflective properties of agricultural crops in Belarus based on field spectro-metry and Earth remote sensing materials// Belarusian Land. - 2016. - № 2. - P. 42-46.

10. Kocharli S.A., Gyulaliev Ch.G., Jafarov A.M. “Optical properties of the lands of the Karabakh plain and drawing up a schematic map” Institute of Geography of ANAS named after academician H.A. Aliyev Azerbaijan Geographical Society “Karabakh and Eastern Zangezur Economic materials - practical conference on the organization and manage-ment of natural-economic systems in the regions, Baku, 2022, p. 334-344.

11. Kocherli S.A., Gulaliyev Ch.G., Jafarov A.M. -“The possibility of using spectral reflection in soil research” Agro-international conference on agriculture. Abstracts of reports, Azerbaijan State Agrarian University, 2022, June 04-06, p. 446.

12. Kocharly S.A., Gyulaliev Ch.G., Jafarov A.M., Mamedova E.M., Valieva Z.M., Tagieva S.I. -“Use of optical properties in the study of soil diversity”// Modern problems of geography International scientific-practical conference. Baku. - 2022. November 20-30. - Matt. I, - Р. 122-128.

13. Kocherli S.A., Jafarov A.M. The relationship between agrophysical and optical properties of the main types of soils of the Mugan Plain. ANAS “Soil Science and Agrochemistry” vol. 24, Baku, "Elm", 2019. - P. 52-57.

14. Mustafayev M. G. Change of the salt’s quantity and type in the irrigated soils of the Mughan Plain and their impact on plants productivity// International Journal of Food Science and Agriculture. – 2020. – № 4 (2). – Р. 101–108.

15. Gerayzade A.P., Jafarov A.M., Kocherli S.A., Sariev A.L., Guliev V.A., Samadova O.A. “On the reflection of light from the soil and its practical use” - Collection of scientific works of the Research Institute of Agriculture, vol. XXVIII. "Teacher Publishing House" Baku-2017.