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.
关键词:
碱化土壤,
化学改良,
磷石膏
Abstract: 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.
Key words:
Soil alkalization,
Chemical improvement,
Phosphatic gypsum
桑以林, 张桂森, 陈法孝. 内蒙古河套灌区磷石膏改良碱化土壤效果的研究[J]. 华北农学报, 1990, 5(3): 70-75. doi: 10.3321/j.issn:1000-7091.1990.03.014.
Sang Yilin, Zhang Guisen, Chen Faxiao. Studied on the Effect of Applying Phosphatic Gypsum for Improving Alkaline Soil at the Hetao Irrigated Area In Nei Monggol[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1990, 5(3): 70-75. doi: 10.3321/j.issn:1000-7091.1990.03.014.