Open AccessChanges in the fertility of techno-soils during long-term agricultural use of reclaimed iron ore sludge storages in the Steppes of Ukraine
Author(s) -
Y. Buriak,
V. O. Zabaluev
Publication year - 2020
Publication title -
roslinnictvo ta g̀runtoznavstvo
Language(s) - English
Resource type - Journals
eISSN - 2706-7696
pISSN - 2706-7688
DOI - 10.31548/agr2020.03.088
Subject(s) - land reclamation , agricultural productivity , environmental science , agricultural land , agriculture , productivity , environmental protection , agricultural economics , natural resource economics , agroforestry , environmental engineering , geography , economics , archaeology , macroeconomics
An exceptional feature of the ecological state of Ukraine is that ecologically acute local situations are aggravated by major regional crises. The main reasons that led to the threatening state of the environment are outdated production technology and equipment, high energy and material consumption, which exceeds two to three times the corresponding indicators of developed countries, as well as the high level of concentration of industrial facilities. industrial region are environmentally hazardous man-made objects, for which more than 7.5 thousand hectares of land. According to Art. 14 of the Constitution of Ukraine, land is the main national wealth. Extensive opportunities for modern science and technology have brought to the fore new opportunities for efficient land use. Subject to reclamation, they can be successfully used for agricultural production. Reclamation of disturbed lands is provided by the Land Code (Article 166) and the Law “On Land Protection” (Article 52). Reclamation of land plots is carried out by layer-by-layer application on low-yielding land plots or plots without soil cover of the removed soil mass, and if necessary - and the parent rock in the order that ensures the highest productivity of reclaimed lands. Agroecosystems formed on reclaimed lands are currently mostly not marked by ecological stability and high productivity of agrophyto-coenoses. According to the results of 38 years of research in a stationary experiment, it was found that for agricultural reclamation of iron ore sludge the most rational model of technozem is a three-membered edaphic structure: This option ensures the productivity of crops at the level of intact soils. During the period of use, the indicators of humus accumulation slightly increased in the arable layer, gross reserves and the content of macronutrients did not change, the quality of man-made soil did not deteriorate.