The current state of studying the changes in the forms and bioavailability of copper and zinc in the soil-plant system: optimal design studies for monitoring on large sample arrays

To describe the biotransformation of copper and zinc in the soil, the directions of study of accumulation and transformation in soils of copper and zinc in science are distinguished. These are studies of man-caused contaminated areas that have developed under the influence of the anthropogenic factor — due to their proximity to industrial enterprises, location near cities; studies with the artificial creation of a model of acculturation or man-made pollution through the introduction of the element into the soil, through the introduction of multicomponent fertilizer compositions in microfilm and field experiments. The analysis of Russian and foreign scientific publications over the past 20 years has been done on the elibrary.ru portal, in the electronic catalog of the Russian State Library, among the dissertations on earth sciences, foreign electronic resources — Consortium of University Scientific Publishers Europe, Google Academy, Web of Science, Scopus, ERIH PLUS, «Nature» registered. Studies of changes in bioavailability and the fractional composition of zinc and copper in a soil are analyzed, and the effect of these processes on organic and mineral fertilizer systems is less influenced by the long-term application