Abstract
The data on the content of microelements Mn, Cu, Zn, Co, Mo, B in soils of different zones of Omsk Irtysh region and plants grown on them are presented. The content of acid-soluble forms of Mn, Cu, Zn, Co, determined in 5M HNO3, in chernozem and solonets soils of the forest-steppe and steppe approaches the background total content in the chernozems of the south of Western Siberia. It depends on the content of sludge fractions, physical clay, the value of the cation exchange capacity. On the soils of the southern taiga, plants are deficient in mobile B, Mo, Co, Cu. In the chernozem and solonets soils of the forest-steppe and steppe zones, the mobility of the Cu, Zn, Co compounds is low (0.5-1.2% of acid-soluble forms), Mn (1.8-3.3%), B and Mo (5-13% ) is higher. The content in mobile zinc soils is estimated as low, Mn, Cu, Co as low and medium, Mo - medium and high, B - high. The level of trace elements in natural and cultivated plants is higher than in the southern taiga, however, a low content of Cu, Co, and sometimes Zn is often observed. In solonetzes and saline soils, excessive concentrations of mobile B are contained, which contributes to an increase in the entry of the element into food chains.
Highlights
Микроэлементы в живых организмах выполняют многочисленные уникальные функции, связанные с обеспечением и регулированием многих биохимических процессов (Битюцкий, 2011)
The content of acid-soluble forms of Mn, Cu, Zn, Co, determined in 5M HNO3, in chernozem and solonets soils of the forest-steppe and steppe approaches the background total content in the chernozems of the south of Western Siberia. It depends on the content of sludge fractions, physical clay, the value of the cation exchange capacity
On the soils of the southern taiga, plants are deficient in mobile B, Mo, Co, Cu
Summary
Исследования проводили в 1991-2010 гг. в разных природных зонах Омской области: южной тайге, лесостепи и степи. Содержание микроэлементов исследовали в дерново-подзолистых почвах (по WRB 2014, Albic Retisols Abruptic), серых лесных (Greyzemic Phaeozems), черноземах (Haplic Chernozems), лугово-черноземных, в том числе солонцеватых и солончаковатых, Chernozems, Gleyic Chernozems Sodic), луговых солонцеватых и солончаковатых почвах (Chernic Gleysols Salic, Sodic), солонцах лугово-черноземных и луговых (Gleyic Solonetz), солончаках луговых (Gleyic Solonchaks) (Мировая реферативная...., 2017). Содержание подвижных форм Mn, Cu и Co в почвах южной тайги и северной лесостепи в ФГУ САС «Тарская» устанавливали методом Пейве и Ринькиса с использованием индивидуальных экстрагентов (ГОСТ Р 50682-94; ГОСТ 50684-94; ГОСТ 5068794). В растительных образцах микроэлементы определяли после сухого озоления при температуре 525±25 oС: Cu, Mn, Zn и Co атомно-абсорбционным (ГОСТ 27998-88; ГОСТ 27997-88; ГОСТ 30692-2000) и B – колориметрическим методом
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