MEADOW AGROPHYTOCENOSIS FORMATION ON POSTAGROGENIC LANDS WITH COMPLEX INVASION

Abstract

The article is devoted to solution priority scientific production task – effectiveness formation of perennial legumes and cereal grasses during the development of mixed-age deposits depending on the phytocenotic characteristics of secondary phytocenoses developed on them. Studies were conducted in 2006-2018 on postagrogenic gray forest medium loamy soils in field experience. In Kaluga Agricultural Research Institute was studied evolution of secondary phytocenoses to develop alternative technologies for the accelerated development of fallow lands. In the central part of the slope area of more than 12.0 hectares for study of auto- and allogenic series were laid two parallel transects 50 m apart from each other, with 10 permanent platforms (250 m²) fixed on each of them every 100 m. Nearby was located a plot of 1.0 hectare for studying fallow lands in order to develop under sown meadow phytocenosis. The groupings of aboriginal and invasive species within their borders at the area not less than 10 m² in 50 fold replications were studied. In the article was given analysis of the causes of changes in productivity and its determining elements, floristic composition, the prevalence of groupings, species richness, invasion degree, dominants changing, grass stand stratigraphy when haymaking use in the series: autogenous – allogeneic – agrogenic phytocenoses. The influence of the expansion of invasive plant species with adaptive potential to the ecological and soil conditions of the Meshchovskoe Opolie of the Center of the Nonchernozem Zone of the Russian Federation is shown, to replace the native plant communities.