Si-releasing character of slag-based silicon fertilizer and impact factors Effect of iron slag adding on methane production, oxidation and emission in paddy fields Study on the characteristics of phosphorus adsorption and desorption in slag containing silicon Effect of mixing slag and fertilizer on silicon availability and phosphorus fixation rate Effect of Special Slag Fertilizer on the Growth of Phyllostachys edulis Bamboo Shoot Preliminary Study on the Chemical Components of the Slag and Its Feasibility for Soil Improvement