TY JOUR TI CHEMICAL COMPOSITION OF CROP RESIDUES GROWN ON DIFFERENT SOIL FERTILITY BACKGROUND IN FOREST-STEPPE ZONE OF TRANS-URALS KW chemical composition of straw KW spring wheat KW oats KW barley KW mineral fertilizers KW lixivi-ous chernozyom KW Northern Trans-Urals JO Bulletin of KSAU AU Eryomin, D.I. AU Akhtyamova, A.A. PY 2017 IS PB Krasnoyarsk State Agrarian University