1. A method of reproducing plants and planting a miscanthus plant, comprising planting at least one rhizome (2, 3) of a miscanthus plant in arable land (10) to produce an shoot of at least one miscanthus plant from at least one rhizome (2, 3) wherein, for planting at least one rhizome (2, 3), a briquette (1) is placed in the arable area (10), which is formed from at least one rhizome (2, 3) and soil (4), and the soil (4 ) are placed around at least one rhizome (2, 3) .2. A method according to claim 1, in which, to form a briquette (1), a group (9) of rhizomes (2, 3) is extracted from the arable area (10) and divided into separate rhizomes (2, 3). 3. A method according to any one of paragraphs 1 or 2, in which appropriate sizes of the briquette (1) are selected to form the briquette (1) with at least one whole, unharmed rhizome (2) of the miscanthus plant. 4. A method according to claim 3, wherein the briquette (1) is formed into a symmetrical shape, wherein at least two longitudinal cuts (19) of a given depth are made to form a briquette (1) of a symmetrical shape in the arable area (10), which are oriented substantially parallel each other, and a group of transverse sections (21) of a given depth, which are oriented essentially parallel to each other, and the longitudinal (19) and transverse (21) sections are made with intersection, while the main section is also made to extract the briquette (1), by whose form dissolved bottom side (16) of the preform (1), wherein the lower side (16) of the preform (1) is carried out the opposite surface (11) of arable land (10), which is used as the upper side (16) of the preform (1) .5. The method according to claim 4, wherein longitudinal (19) and / or transverse (21) sections and / or the main section are performed by a soil mill and / or a plow and / or1. Способ воспроизведения растений и посадки растения мискантуса, включающий посадку в пахотную площадь (10) по меньшей мере одного корневища (2, 3) растения мискантуса с получ