V.I. Korchagin
State Center of Agrochemical Service «Voronezhsky», ul. Lomonosova, 98, Voronezh, 394087, Russian Federation
Summary. Voronezh region is one of the food donors of the country. Developed agriculture has formed here due to fertile chernozems, which compose one of main natural resources of the region. The area of agricultural lands in the region is 4.0 million hectares, included 3.0 million hectares of arable lands, or 75%. The agrarian sector for Voronezh region was always the priority one, and it will be one of the basic forms of economical activity. Therefore it is necessary to think not only how to the most effectively use chernozems now, but also how to keep them. The aim of our investigation was to analyze the regularities of changes of the main agrochemical indices of soil fertility of Voronezh region. The work is based on the materials of eight stages of the complete agrochemical survey of soil (1965-2010). The sufficiently stable weighted mean content of organic matter in the range 5.61-5.67% is registered in the arable lands of Voronezh region in the years of the experiment. According to the results of the last finished stage of the agrochemical survey (2006-2010) the weighted average content of the mobile forms of phosphorus was 94 mg/kg, of mobile forms of potassium–123 mg/kg. The total area of soils with acid reaction reached 576,400 ha, 112,800 ha from them are strongly and middle acid and 463,600 ha are subacid.
Keywords: fertility, mobile forms of phosphorus, mobile forms of potassium, humus, soil acidity, chernozem.
Author Details: V.I. Korchagin, director (e-mail: Этот адрес электронной почты защищён от спам-ботов. У вас должен быть включен JavaScript для просмотра.).
For citation: Korchagin V.I. Dynamics of the Agrochemical State of Arable Soils of Voronezh Region. Dostizheniya nauki i tekhniki APK. 2015. V.29. No11. Pp. 11-13 (In Russ.)