摘要
采用磷石膏改良碱土和碱化盐土,脱碱效果十分显著.磷石膏因酸度大,还可以提高土壤养分元素、特别是微量元素的有效性,并能很好地改善碱化土壤的物理性状.施有机肥改良碱土效果也比较好,只是速度缓慢.靠掺砂和单纯的水利冲洗,脱碱效果不佳.
It is very obvious to improve alkali soil and soloketzic solonchak through applying phosphatic gypsum. In addition, phosphatic gypsum shows greater acidity, it can increase the elements of soil nutrient, especially, increases effectiveness of microelement, and also improves the physical property of alkali soil.Application of organic manure can also result in improving the alkaline soil, but the speed is slow. It is less effective to improve the soil through adding sand to it and leaching to dealkalize.
出处
《华北农学报》
CSCD
北大核心
1990年第3期70-75,共6页
Acta Agriculturae Boreali-Sinica
关键词
碱化土壤
化学改良
磷石膏
Soil alkalization
Chemical improvement
Phosphatic gypsum
