论文部分内容阅读
该报告介绍了腐植酸在改良土壤盐碱地中的应用效果。在我国,盐碱地的面积为3300多万公顷。近些年,在西北、东北西部和内蒙古等地区,土地盐碱化面积仍在不断扩大,盐碱土改良意义重大。腐植酸通过吸附、交换、酸碱中和作用使盐碱土pH值降低,交换性钠离子降低,进而改善土壤的理化性状,提高有机质含量,达到改良盐碱土并种植农作物的目的。
The report describes the application of humic acid in improving soil salinity. In our country, the area of saline-alkali land is more than 33 million hectares. In recent years, in the northwest, western part of northeast China and Inner Mongolia, the area of land salinization is still expanding, and the improvement of saline-alkali soil is of great significance. Humic acid through the adsorption, exchange, acid-base neutralization and so that the pH value of saline-alkali soil to reduce the exchangeable sodium ions decreased, thereby improving soil physical and chemical properties, increase the content of organic matter, to achieve the purpose of improving the saline-alkali soil and planting crops.