METHOD FOR MEASUREMENT OF GRASS COVER CROP YIELD

摘要

FIELD: agriculture.;SUBSTANCE: invention relates to the field of agriculture and forestry. In method fluctuations of crop yield are accounted depending on structure of phytocenosis in the form of grass cover, required accuracy of crop yield measurements is specified based on tests of grass on sample sites. Grass samples testing data is statistically processed from sample sites at near-bed, central and near-terrace flood plains and also in meadows with uneven and mosaic arrangement of grass types in each phytocenosis as components of grass cover. Prior to planting of sample sites, without measurement of distances between them, area is reconnoitered with grass cover selected for measurements, schematic map or topographic map is made to locate components of grass cover by results of geodesic measurements and photographs taking. Afterwards at each component of grass cover at least one temporary sample site is arranged, in cut sample of grass, raw and air-dry mass of sample is determined by weighing, and crop yield by group of components and grass cover as a whole is calculated as values of average weighted value from crop yields of grass samples.;EFFECT: invention makes it possible to improve accuracy and to reduce labour intensiveness of measurements by results of testing grass samples cut from sample sites on the territory of complex multi-component grass cover.;8 cl, 9 dwg, 3 tbl, 1 ex