Динамика подвижных форм питательных веществ в карбонатном чернозёме в условиях длительного полевого опыта с удобрениями
2019
Индоиту, Д. (State Agrarian University of Moldova, Chisinau (Republic of Moldova) | Индоиту, Дм. (State Agrarian University of Moldova, Chisinau (Republic of Moldova)
The dynamics of plant-available phosphorus, potassium and nitrate nitrogen in calcareous chernozem in the 1953-2019 period was studied. The research was conducted in a long-term experiment with various fertilizer systems. The nutrient content was studied in a layer 0-60 cm during cultivation of winter wheat. It was revealed that the systematic use of fertilizers for 32 years can increase the content of plant-available phosphorus several times and potassium about one and a half times in comparison with its initial content. The subsequent use of low doses of mineral fertilizers, together with the embedding into the soil of all plant residues and by-products, makes it possible to slow down the decrease in plantavailable phosphorus and potassium in calcareous chernozem. The content of nitrate nitrogen varied during the research depending on the doses of fertilizers used and the vegetation period of winter wheat.
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