Agrochemical parameters of soil fertility ordinary chernozems Middle Volga with prolonged use of resource-saving technologies of crop cultivation
Автор: Obuschenko Sergey, Korchagin Valentin
Журнал: Известия Самарского научного центра Российской академии наук @izvestiya-ssc
Рубрика: Земледелие и растениеводство
Статья в выпуске: 4-3 т.17, 2015 года.
Бесплатный доступ
One of the important areas to maintain a high level of soil fertility is to ensure a positive balance of soil nutrients. The article is sanctified by the dynamics of the content of mineral nitrogen, mobile phosphorus and exchangeable potassium in the long-term use of resource-saving technologies in field crop rotations with differentiated and minimal (mulching) tillage systems. Established unstable form of nitrogen in their soils mode. Identification of patterns indicative of the need for a different approach to the formation of the optimal nitrogen regime in the transition to tillage systems using straw as fertilizer. This regularity involves the need for starting doses of nitrogen udobreniyv technology of the new generation on the basis of 8-10kg of nitrogen per 1 ton of chopped straw. Based on these studies to elucidate the role of new technologies in the formation of nitrogen nutrition of plants, the accumulation of nitrogen in the soil and consumption of mobile forms of battery. There was a trend toward a higher content on this background, mobile phosphorus and exchangeable potassium. It is proposed to re-evaluate existing ideas about the system of fertilizers and methods of reproduction of soil fertility in complexes with a minimum of technological and differentiated tillage systems.
Soil fertility, soil nitrogen regime, mobile phosphorus, exchangeable potassium, saving technologies, field crop rotations
Короткий адрес: https://sciup.org/148203918
IDR: 148203918