| 摘要 |
An inexpensive, relatively quick process is disclosed for preparing iron-containing phosphorus glasses. These glasses are substantially free of silica, alumina, boron, and alkaline earth components normally found in many glasses and serve as nutrients in comminuted form to provide a source of ferrous iron, for example, to plants and seeds. The glasses release ferrous iron over a prolonged period of time and are effective in either acidic or alkaline soils. |
