工业废弃物在盐碱地改良中的应用研究进展

盐碱地是地球陆地上分布广泛的一种土壤类型,土壤盐渍化是困扰人类的五大土壤问题之一。在耕地面积减少、人口持续增长的巨大压力下,盐碱地改良和开发利用日益引起人们的普遍关注。利用工业废渣改良盐碱地具有良好的经济效益和生态效益,目前可用作盐碱土改良剂的工业废渣有脱硫石膏、粉煤灰、糠醛渣等。鉴于此,就脱硫石膏、粉煤灰、糠醛渣3种废弃物改良盐碱化土壤的研究进展予以综述,并针对存在的问题提出了建议。

Research Progress on Industrial Waste Improving Saline-alkali Land

Saline-alkali land is a widely distributed soil type on the earth.Soil salinization is one of five questions that beset human beings.Under the great pressure of the decreasing of cultivated land and the sustainable increasing of population,improvement,development and utilization of saline-alkali land cause people’s widespread concern increasingly.Use of industrial waste to improve saline-alkali land has good economic and ecological efficiencies.At present,desulfurization gypsum,fly ash,furfural residue and so on can be used as saline-alkali soil amendments.This paper reviews the progress on three wastes improving alkaline soil including desulfurization gypsum,fly ash and furfural residue,and puts forward some proposals on the existing problems.