粉煤灰的农用开发及其意义

Agricultural Exploitation for Fly Ash and its Significance

粉煤灰农用具有投资少、容量大、需求平稳、波动少等多方面优点。粉煤灰富含Ｓｉ、Ｃａ、Ｆｅ、Ｍｇ和相当数量的微量元素，具有吸附性能好、可磁化的特点，是粉煤灰农用开发的技术依据。以粉煤灰为原料制造有机复合肥是粉煤灰农用开发的重要方式。试验表明，粉煤灰磁化的效果与相应的土壤性质密切相关。

Agricultural exploitation for fly ash have many advantages,such as low investment,huge disposal capacity and stable demand.Fly ash contains abundant Si,Ca,Fe,Mg and some micronutrients and has good adsorbing capacity and magnetization properties,these are technical basis of agricultural exploitation for fly ash.The production of organic compound fertilizer using fly ash as raw material is an important mode of agricultural exploitation for fly ash.The results of pot experiments indicated that the magnetizing effects of fly ash are closely related to the soil properties,more efforts should be made for basic study on the effect of magnetization to fertilizer efficiency.