Effect of using silicon fertilizer on wheat was studied by potted planting and field experiment. The result showed that the agronomic characters was improved, disease resistance and adversity resistance of plant was increased strongly. The yield was increased clearly. The range of increased yield and the fit quantity for using silicon fertilizer was 9.30% - 16.42% and 75.0 kg/hm^2 in brown earth, 7.43% - 13.26% and 37.5 kg/hm^2 in salinization fluvo- aquic soil and 0.53% - 5.05% and 37.5 kg/hm^2 in lime concretion black soil.