利用脱硫石膏改造盐碱地的循环经济模式

Circular Economy Mode by Using Synthetic Gypsum to Transform Saline-alkalai Soil

利用燃煤电厂脱硫石膏改良盐碱地对于确保国家粮食安全和生态安全,发展循环经济具有重要意义,已经引起国内外的广泛关注.选择具有典型代表性的白城市盐碱化土壤,采用田间试验进行施用脱硫石膏改良碱化土壤的效果研究.研究表明施用脱硫石膏,对降低土壤碱化度和pH值,提高农作物出苗率和产量有明显效果.利用电厂脱硫石膏改造盐碱地,是将工业污染排放物组织成一个"资源-产品-再生资源"的模式.

It is very vital to use synthetic gypsum in coal-fired power plants for the guarantee of national food security and ecological security and the development of circular economy.It attracted wide attention from home and abroad.Choosing the typical salinized soil in Baicheng area,adopting field test to carry out a research on the improvement of alkali-affected soil by synthetic gypsum can indicate that the employment of synthetic gypsum can reduce the degree of soil alkalization and PH and increase the rate of germination of the crops.The circular economy advocated by this paper is an economic development mode which is harmonious with environment,adopting synthetic gypsum in power plants to transform saline-alkali soil is one that can organize industrial pollution emission into a 'resource-product-renewable resources' mode.