METHOD OF ANALYSIS OF GRASS SPECIES OF HAY MEADOW Russian patent published in 2015 - IPC A01G23/00 A01G7/00 

FIELD: agriculture.

SUBSTANCE: invention relates to the field of landscape science and agriculture. The method comprises selecting the test sites, their establishment and weighing the cut plants. Before establishment of the test sites the units of hay meadow are marked, homogeneous in species composition and quality grass. The number of species of grass on one test site with dimensions of 2.00×2.00 m is taken as environmental quality indicator of meadow grass on the entire unit of the mosaic meadow. At each unit of hay meadow at least one test site is established. The grass is cut just before haying. Prior to weighing the cut plants are divided by species and then weighed directly on the test site. The sample of grass is left on the test site for natural drying to air-dry moisture and removed with the hay ready to plot. The weight values of the sample on each test site are measured. After that the sum of the weights in all test sites and for certain species of plants is calculated. The relative species composition of the sample is determined by dividing the number of species of grass plants to the overall composition of all test sites, the mass distribution of the grass cover on units of the selected area of the hay meadow, the number of species on test sites by the formula: N=6.12285 exp (-0.021881 K^3.18049), where N is the number of species of grass plants in the test site, pc., K is code of quality of hayland grass on the unit; K=1 or K=2, or K=3 or K=4. Quality of grass of hay meadow is assessed according to the relative distribution of species, η, η=N/N_tot, where N_tot is total number of species.

EFFECT: method enables to simplify the experiment and to improve the accuracy of analysis of species diversity.

6 dwg, 3 tbl, 1 ex