ZAKHAROVA M. Agrogeochemical conformity to natural laws of heavy metals migration and accumulation in irrigated soils

Object - agrogeochemistry of heavy metals in the "irrigation water-soil-plant" system. Purposes of research - to establish of agrogeochemistry natural law of heavy metals migration and accumulation in irrigation agrolandscape. Methods - field, experimental, analytical, statistical and mathematical. Theoretical results: natural law of change of heavy metals contents in plough-treated layer and their distribution on soil profile in chernozem and dark-chestnut soils under influence of irrigation by different quality waters and fertilizing were revealed. Practical results: expediency use of heavy metals balance calculation and determine of their mobile forms contents in all root area of soils were grounded to ecological researches. Novelty - the levels of heavy metals contents, natural law of their dynamics, migration and accumulation, peculiarity of these processes changes under influence of fertilizing and local contamination were investigated in system "irrigation water-soil-plant" for forest-steppe and steppe zones of Ukraine. Degree of implementation - the results were used by devise of departmental normative documents "Quality of water for irrigation. Ecological criteria" (33-5.5-02-97), "Conservation of waters, soils and plants resources from pollution by heavy metals in conditions of irrigation " (33-5.5-06-99), implement in force by order State committee of Ukraine for water management. Area of application are agriculture, soil science.