烟气脱硫废弃物在碱化土壤改良中的应用及效果

以燃煤烟气脱硫废弃物作为化学改良剂,在内蒙古托克托县伍什家乡毡匠营村进行碱化土壤改良试验(种植作物为玉米),试验定期测定土壤的pH值、全盐量、代换性钠及碱化度等,观测植物生长指标(出苗率、产量等)。分析烟气脱硫废弃物对盐碱地土壤理化性质和玉米生长状况及产量的影响。结果表明:处理区土壤的pH值和全盐量比对照区有明显降低,处理区的原始碱化度越高,则代换性钠和碱化度的下降幅度越大。处理区的玉米出苗率和产量都明显高于对照区,用烟气脱硫废弃物改良碱化土壤具有极大的推广应用价值。

The application and effect of desulphurized waste of flue gas in improving alkali soil

Desulphurized waste of flue gas used as chemical improvement agent was tested on alkali soil in Tuoketuo County of Inner Mongolia Region. In the experiment, the soil properties (such as pH, total salt quantity, exchangeable Na~ and alkalinity) and the physiological parameters of maize (such as seedling emergence rate and yields) were observed in regular time to investigate the effect of desulphurized waste of flue gas on the soil physicochemical characters and the growth and yields of maize. The results showed that soil pH and total salt quantity in treatment areas was decreased compared to non-treatment areas. The higher the initial alkalinity was, the more obviously the exchangeable Na~ and alkalinity decreased in treatment areas. The seedling emergence rate and yields of maize in treatment areas were better than non-treatment areas. The desulphurized waste of flue gas is an effective chemical agent to improve alkali soil.