利用低品位磷矿粉生产腐植酸复合肥的研究

Production of Composite Humic Acid Fertilizer form Low-grade Apatite

低品位的磷矿粉经过酸化处理后，与褐煤一起经氨化生产出旱地荞麦专用腐植酸复合肥。经过田间试验，结果表明其效果与等效的化肥相同，因其工艺简单、价格低廉，从而为低品位磷矿资源的利用提供了依据。

Composite humic fertilizer is produced from low-grade acidized apatitepowder and lignite by the means of ammoniation.It is used specially for buckwheatgrowing in dry fields. Experiments in buckwheat field show that it has the same effectson buckwheat as other equivalent chemical fertilizers. With its simple technological pro-cess and lower prodaction cost it provides scientific basis for making use of low-gradeapatite.