Использование злаковых трав для биологической рекультивации нарушенных земель Севера

TL;DRAbstract

The results of researches of the biological reclamation of lands disturbed by diamond mining are presented. The paper describes the experience of using of mineral-organic substrates on the basis of peat and kimberlite tailings of the deposit named after M.V. Lomonosov as a soil fertile layer. We used four variants of grasses: meadow fescue ( Festuca pratensis Huds), red fescue ( F. rubra L), Kentucky bluegrass ( Poa pratensis L.) and timothy ( Phleum pratense L.). The best variants for plant growth in the amount of agrophysical and agrochemical indicators are the variants with the content of the peat by volume from 30 to 10 % or 10-20 % by weight of dry peat. In these embodiments, the bulk density (1,03 g/cm3) and porosity (62,53 %) of the substrate are close to the optimum for plant growth. In autumn the height of the aerial part and the root length, an average mass, the number of generative shoots of 25 two-year plants of each species was measured.The best indicators of the surface c

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