Abstract
The purpose. To determine influence of methods of recreation, fertilizing and utilization of meadow lands upon botanical compound, productivity and efficiency of growing grass stands on grey forest soils. Methods. Field, laboratory, mathematical-and-statistical. Results. It is fixed that the most efficient method of recreation of meadow lands is sowing of legume-grass mixtures with lucerne. That ensured the highest efficiency. Importation of N140 for legume-cereal grass stands decreased content of leguminous ingredients and was ineffective. For cereal grass stand and old lands such importation increased productivity in 1,8—2,0 times. Conclusions. Among varied grass stands in the alternative without fertilization the most productive one is lucerne-cereal grass stand, which at 2-hay cutting ensures the yield for 1 hectare of 8,10 tons of dry matter and 5,13 t/hectare of useful units. At 4-hay cutting it ensures 7,41 and 6, 35 t/hectare accordingly, that in 2,1 — 2,3 times more in comparison with seeded cereal grass stand. The level of accumulation of symbiotic nitrogen by lucerne made 142 — 154 kg/hectare.
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