Annotation

The influence of fertilizer systems and precursors on the formation of nutrient regime of sod-podzolic soils under winter crop rotations in short-rotation crop rotation is investigated. It was established that the highest content of alkali hydrolyzed nitrogen (105.6 mg / kg of soil), mobile phosphorus (65 mg / kg of soil) and mobile potassium (105 mg / kg of soil) under winter rape in the arable layers was at the time of the restoration of the spring vegetation after the forerunner of winter wheat in the variant of introducing mineral fertilizers in combination with growth stimulators and micro fertilizers. It should be noted that the observance of scientifically grounded crop rotation, and cultivation technologies (the introduction of mineral fertilizers and mineral fertilizers in combination with growth stimulators and microfertilizers) contribute to the improvement of the nutrient regime of the soil and the restoration of fertility. It was established that for rotation of crop rotation, the content of humus in sod-podzolic soils decreased, which is explained by the absence of an organic fertilizer system. It has been proved that only organic fertilizers and organic matter can increase or leave the humus content in the soil at the same level.

Analyzed to law of content nutritional regime of sod-podzolic soils for growing rape of winter in short-rotation crop rotation for different fertilizer systems. It is set was established that under the influence of the mineral fertilizer system and the mineral fertilizer in combination with microfertilizers and growth stimulants, the provision of plants with available forms of nutrients increases, but the proportion of humus decreases in rotation of crop rotation.