The dissertation presents the results of research on the peculiarities of the planting material formation depending on the application of a complex of elements of technology - terms of planting, rhizome mass, absorbent and quality of planting material. The absorption introduction improves soil moisture in all stages of growth and development of the miskanthus is established. It was revealed that the growth of the earth mass of plants - plant height, leaf area, number of leaves and buds on rhizome depended on meteorological conditions and elements of the technology of their growing. The growth of the earth's mass of plants affects the increase of the root system - the output of the planting material. Direct correlation bonds were established between the weight of the rhizome and the height of the plants, the area of the leaves, the number of leaves and the number of kidneys on the rhizome, respectively - 0.84, 0.98, 0.82 and 0.97. The intensity of the growth of the rhizome mass for both terms of planting depended on the use of the absorbent and the weight of the rhizomes planted. For the joint use of granules and absorbent gels for both periods of planting for the period of vegetation, the largest amount of rhizomes was obtained - for the first time of planting rhizome weighing 20-30 g it was 900.0 g, rhizome weighing 60-90 g - 1635.5 g. For the planting of large rhizome (60-90 g) in the first term, the mass of rhizomes was greater in 1.6 times than small rhizome (20-30 g). With an increase in the mass of uterine rhizomes, a larger number of kidneys were formed on them. It was established that the output of the planting material - large and small rhizome depended on the use of an absorbent (granules, gels), from the mass of planted rhizome and the terms of their planting. For rhizome weighing 60-90 g planting in the first term and the joint application of granules and gels of an absorbent is obtained large rhizome in 2.1 times more, in the second term in 2.2 times more than in the control. Similar results were for the rhizome planting by 20-30 g weight.
The growth of the land mass of the miskanthus, the mass of the rhizome, the formation of the kidneys on it, the output of the planting material is greatly depended on the quality of the planting material - the number of kidneys on the rhizome. For the use for planting rhizome with 9 or more buds from the formed rhizomes, it is possible to obtain 1.6 times smaller or large rhizomes compared with the control, which planted rhizomes with 1-3 buds. Planting rhizomes with 4-8 buds provide formation of uterine roots of which can be in 1.8 times greater than in the control and rhizomes in 1.3-1.4 times less than the planting of large rhizomes with 9 or more buds.
Key words: rhizome survival, plant height, leaf area, mass of rhizomes, variability of rhizome mass, number of kidneys, rhizome output.
