ВЛИЯНИЕ МИНЕРАЛЬНОГО ПИТАНИЯ И СПОСОБОВ ПОСЕВА НА ПИТАТЕЛЬНУЮ ЦЕННОСТЬ БОБОВО-МЯТЛИКОВЫХ ТРАВОСМЕСЕЙ

Abstract

To create a stable forage base, it is necessary to produce a sufficient amount of high-quality feed. Cultivation of legume-bluegrass grass mixtures makes it possible to obtain balanced forage in terms of protein. This requires properly selected components of grass mixtures and improved agricultural practices for the cultivation of legume-bluegrass grass mixtures. The aim of the research was to study the effect of various components included in legume-poa grass mixtures, mineral nutrition levels and sowing methods on the nutritional value of grass mixtures. To achieve the goal, the following tasks were set: to study the effect of various sowing methods and levels of mineral nutrition on the nutritional value of grass mixtures; to identify the most promising grass mixtures for the conditions of the north of the Astrakhan region, which have high productivity. Records and observations were carried out according to generally accepted methods. The results of three-year studies show that the scattered sowing method and increased mineral nutrition increase the content of crude protein in the biomass of the studied grass mixtures. The maximum value of this indicator was noted for grass mixtures 1 and 4 with broadcast sowing and the use of N50 mowing dressings - 20.76 and 20.84%, respectively. The split-row sowing method and N50 hay cuttings increased the content of raw fat in the biomass of grass mixtures. The highest content of crude fat was noted in grass mixtures 1 and 4 on the experimental variants of the separate-row sowing method + N50 mowing top dressing - 3.35 and 3.29%, respectively. Increased mineral nutrition and scattered sowing reduced the content of crude fiber in the biomass of the studied grass mixtures. The maximum amount of crude fiber in the biomass of the studied grass mixtures was noted in the variant with the use of a separate-row sowing method and background fertilization (control) in grass mixtures 1 and 4 - 23.71 and 23.65%, respectively.