METHOD FOR FORMING A ROLLED COMBINED GRASS COVER Russian patent published in 2022 - IPC E01C13/00 A63C19/04 

FIELD: combined turf forming.

SUBSTANCE: invention relates to methods for forming a combined turf used for sports purposes, in particular on a football field. The method of forming a rolled combined grass covering includes sowing seeds of natural turf on a layer of soil located on a base supporting the fibers of artificial turf, growing natural turf to a height equal to or greater than the length of fibers of artificial turf, where the roots of said natural turf are able to penetrate the base, trimming plants natural turf to maintain a desired height of said natural turf, which is at least the same length as the fibers of the artificial turf. Artificial turf is laid on a pre-leveled sandy soil and sewn together. On the basis of artificial turf, the first layer is evenly laid with quartz sand of the MDF2 brand with a fraction size of 0.1-0.4 mm at the rate of 20 kg/m², the second layer is evenly applied to a mixture of quarry sifted sand 77 kg / m², natural zeolite 0.4 kg/m² with a fraction size of 0.2-1.2 mm and a hydrogel of 0.5 kg/m², starting doses of YaraMila NPK 7-20-28 complex fertilizer at the rate of 25 g/m² and a soil conditioner based on mineral silicate complex with colloidal function Agrozil LR at the rate of 150 g/m², irrigation is carried out by sprinkling of 5-7 l/m², sowing with a mixture of perennial grasses of perennial ryegrass Vesuvius, perennial ryegrass Lifrance, meadow bluegrass Limousine, meadow bluegrass Lincolnshire, red hairy fescue Jewelin, red fescue modified Livist at their respective ratio of 1:1:1:1:0.5:0.5.
Within nine months, watering is carried out to maintain the field moisture capacity within 70-80% and the natural turf plants are trimmed to the length of the artificial turf fibers, the cut is made into rolls 1.2 m wide, 15 m long and 0.03 m thick.

EFFECT: formation of a combined grass turf covering with a stabilizing artificial base that protects the root system of natural grass stand, the possibility of easy installation on site and its operation 2-3 days after laying.

1 cl