IDENTIFICATION OF THE CORRELATION BETWEEN THE PHYSICOCHEMICAL PARAMETERS OF SOILS DURING SOIL-ECOLOGICAL MONITORING OF AGRICULTURAL LANDS

Kucherova Arina Nikolaevna  -  laboratory research assistant, Federal Scientific Center for Agroecology, Integrated Land Reclamation and Protective Afforestation of the Russian Academy of Sciences, Russia, 400062, Volgograd, Universitetsky Ave., 97 , kucerovaarina@gmail.com

This article examines and analyzes the relationship between soil particle size distribution fractions, humus content, and exchangeable cations in agricultural soils. The study was conducted on alluvial and brown arid soils on fallow land and arable land in the Kharabalinsky District of the Astrakhan Region. The arable irrigated soil is classified as heavy loamy and light clay soils based on its physical sand and clay content. Alluvial virgin soils contain loam and light clay. Humus analysis in fallow and virgin soils in the study area revealed a very low humus content (up to 1%). Soil samples from arable irrigated agricultural soils were noted for their higher organic matter content. A study of exchangeable cations revealed an uneven distribution of exchangeable calcium and magnesium (31-67%), as well as low potassium and sodium contents (0.3-3%). According to the results of the correlation analysis, an average relationship is observed between the content of organic matter and the smallest fractions (silt, fine dust, medium dust).

Key words: soil, particle size distribution, humus, exchangeable cations, physical clay.