TY JOUR TI ASSESSMENT OF FERTILITY AGROECOLOGICAL PARAMETERS OF AGRO-GRAY SOILS WHEN LAYING A FIELD EXPERIMENT KW spatial heterogeneity of soil fertility KW agrochemical properties KW mineralogical composition of the soil KW agroecological assessment KW geostatistics JO Bulletin of KSAU AU Belousov, A.A. AU Belousova, E.N. AU Ulyanova, O.A. AU Demyanenko, T.N. AU Barova, C.S. PY 2023 IS 0 PB Krasnoyarsk State Agrarian University