Demchyshin N. Productivity of longterm meadow grassland depending on intensity of fertilization and wing in the Western Forest-Steppe

A research object is a process of forming of harvest of longterm grassland and quality of forage depending on a fertilizer and modes of the use, seasonal distributing of nitrogen of fertilizers and change of indexes of agricultural chemistries of soil. Purpose - to set basic conformities to the law and factors of forming of specific structure, productive possibilities of long durations(16- 30-years-old) meadow grassland depending on application of the promoted and middle doses of mineral fertilizers, their influence on quality of harvest and change of indexes of agricultural chemistries of fertility of soil. Methods of researches - the field, gravimetric, laboratory, statistical, calculation-comparative. It is set that of longterm (16-30-years-old) grassland can be hayeffective used without resow, supporting their productivity on equal 62-78 dt/ha of units of forages with at providing of even receipt of grass forage in the flow of vegetation period.