TY JOUR TI FORMATION OF CROP DENSITY AND STRUCTURE OF SPRING WHEAT CROP, DEPENDING ON THE VARIETY AND PRE-SOWING TREATMENT OF SEEDS KW spring wheat KW varieties KW productive stalk KW the number of grains per ear KW weight of 1000 grains KW grain weight of an ear. JO Vestnik of Kazan State Agrarian University AU Lebedeva, Z.. AU Shashkarov, L.. PY 2016 IS 11 PB Kazan state agrarian University