Урожайность и плодородие дерново-подзолистой почвы при различных системах удобрения сенокоса

Abstract

Studies to determine the effectiveness of various intensification systems have shown that as a result of long-term use of agrophytocenosis without replanting, the composition of the grass stand is re-formed depending on the care systems and the mode of alienation of the overgrown mass. In the technogenic system without the use of fertilizers and against the background of PK and manure, a low-grass-forb herbage is formed with a predominance of grassroots grasses. The type of herbage desirable for haymaking is preserved when a complete mineral fertilizer is applied. At the same time, the yield increases from 3.2 t/ha of dry matter in the control (on average over the past 30 years) by 80–150%, depending on the level of intensification. Long-term use contributes to an increase in the accumulation of underground mass and the content of humus in the soil.