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选取5种工矿废渣进行室内模拟试验,研究不同种类工矿废渣作为硅肥施用对土壤硅素释放特性及pH的影响。结果表明:y=kxm方程可以很好地描述土壤硅素释放的动力学特征;施用废渣可显著提高水田土壤硅素释放速率,增加土壤硅素释放量,提高土壤溶液的pH值,土壤溶液pH与培养127天硅素累积释放量间呈极显著直线正相关关系;三种高炉渣(A、B、F)的施用效果明显好于粉煤灰(H)和金刚石矿渣(J),即三种高炉渣更适于作为生产硅肥的原料。
Five kinds of industrial and mining waste slag were selected for indoor simulation test to study the effects of different kinds of industrial and mining waste residue on the silicon release characteristics and pH value as the application of silicon fertilizer. The results show that: y = kxm equation can well describe the dynamic characteristics of soil silicon release; application of waste residue can significantly improve the rate of soil silicon release, increase soil silicon release, increase soil pH, soil pH and incubation 127 The cumulative release of silicalin was linearly and positively correlated with each other. The application effects of three kinds of blast furnace slag (A, B, F) were significantly better than that of fly ash (H) and diamond slag (J) Suitable as a raw material for the production of silicon fertilizer.