活化腐植酸制备有机-无机复混肥的工艺研究

Technical Study on Manufacturing Organic-inorganic Compound Fertilizer by Activating Humic Acid

风化煤、褐煤等物质中含有大量的腐植酸,但在自然界中多数被钙、镁离子固定,能被作物直接吸收利用的水溶性腐植酸普遍含量甚微。因此,生产腐植酸肥料时,有必要进行腐植酸活化处理。本文研究了碳铵与氨水联合对褐煤进行活化处理,得到了生物活性较高的腐植酸铵,并以腐植酸铵作为有机原料与无机养分复混造粒制备了25-5-10有机-无机复混肥样品,经过性能指标和外观效果等方面的评价,明显优于未经活化的褐煤制得的样品。

Abstract： There are much humic acid in weathered coal and brown coal, but most of them are solidified by Ca2＋ and Mg2＋ in the nature, only be quite little water-soluble humic acid which can be directly absorbed by plants. Thus, it is necessary to make an activation to the hurnic acid. This paper study on how to use sodium bicarbonate and ammonia activate humic acid in order to receive a high biologic-active humic ammonia, which could as the organic material to blend with abio nutrient and producing granular organic-inorganic compound fertilizer. It is proved that the activate fer- tilizer sample obviously excelled than the unactivate one in chemical and phical parameters.