TY JOUR TI GEOGRAPHIC INFORMATION SYSTEM (GIS) TECHNOLOGIES A BASIS FOR FORMATION OF HIGH-PRODUCTIVE AGROCENOUSES OF PERENNIAL GRASS IN THE SOIL-CLIMATIC CONDITIONS OF THE REPUBLIC OF TATARSTAN KW GIS technologies KW diversity of land KW fertilizer KW agricultural machinery KW productivity KW product quality KW soil fertility KW habitat. JO Vestnik of Kazan State Agrarian University AU Safiollin, F.N. AU Khismatullin, M.. AU Trofimov, N.. AU Sochneva, S.. PY 2017 IS 12 PB Kazan state agrarian University