Maintenance of Basic Elements of Food of Plants in Soils of Osa River Basin (Top Angara Region)
In this work some results of a research of soils of farmlands of Osa river basin (the Top Angara region) are stated. Conclusions on one of indicators which is connected with fertility of soils – to the maintenance of basic elements of food of plants – phosphorus, nitrate and ammonium nitrogen, potassium are drawn. The maps reflecting spatial distribution of maintenance of basic elements of food of plants in the territory of Osa river basin are made. Research methods and also ways of the cartographical image are described. As a result of the carried-out work with us it has been revealed that in the majority of the studied samples of soils of Osa river basin is observed deficiency of basic elements of food of plants (in the most part of the analysed samples the content of phosphorus doesn't exceed 25 mg/kg, potassium – 100 mg/kg), however in the lowered relief elements in some cases there is their accumulation and maintenance in that case raised. In the territory of a research – in Osa river basin – special physiographic conditions take place – rather warm climate connected with features of a relief fertile soils – chernozems and dark-humic soils were created. However, now the most part of the lands used in the past – a deposit.
Lopatina Darya Nikolaevna, Junior Researcher, V. B. Sochava Institute of Geography SB RAS, 1, Ulan-Batorskaya st., Irkutsk, 664033, Russian Federation, tel.: (3952)42-70-89, e-mail: email@example.com
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