Study of natural and anthropogenic factors influencing the production potential of degraded, previously reclaimed lands of the Volgodonsk district of the Rostov region

Summary. This article presents the results of research conducted on the territory of the Lower Don irrigation system. The influence of water quality used for irrigation of cultivated crops on the productive potential of agricultural land has been studied. It is revealed that the limiting factor in obtaining high yields from agricultural is the unsatisfactory technical condition of reclamation systems.

Introduction. The close attention paid to the problem of changing the productivity of vegetation cover is associated with the global transformation of the climate. At the same time, anthropogenic transformation of ecosystems, mainly associated with changes in the structure of land use and human influence on soil fertility, develops largely independently of climatic processes and can dramatically affect the productivity of vegetation cover. Land reclamation for agricultural purposes is aimed at the optimal use of natural resources of the agricultural landscape, taking into account its environmental sustainability. It is necessary to study the quality of water used for soil irrigation in order to identify its impact on land productivity.

Object. The object of the study was the Lower Don irrigation system located in the direction from east to west in the interfluve of the Don and Sala.

Materials and methods. To determine the state of water and soil resources on the territory of the Lower Don irrigation system, field studies were conducted with the aim of their visual examination, sampling of water, soils and bottom sediments for chemical laboratory analysis. The potential productivity of the soil in the soil and climatic conditions of the studied territory was calculated according to the model of assessing the productive potential of the agroecosystem (Volobueva V.R., the module calculation is carried out using the program Kireicheva L.V., Timoshkina A.D.).

Results and conclusions. The influence of water quality used for irrigation of cultivated crops on the productive potential of agricultural land has been studied. It is revealed that the limiting factor of obtaining high yields from agricultural lands is the unsatisfactory technical condition of reclamation systems. In order to increase the efficiency of using the available reclaimed lands of the Volgodonsky district of the Rostov region, it is proposed to develop and implement methodological recommendations at the level of each municipal district aimed at preserving soil fertility and increasing the yield of cultivated crops.

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