畜禽粪便堆肥高效固氮添加剂研究

Study on High Efficiency Nitrogen Fixation Composting Additive for Livestock Manure

通过在畜禽粪便堆肥过程中加入不同的添加剂,以减少氮素在堆肥过程中的流失。结果表明:添加过磷酸钙、磷石膏、钙镁磷肥可达到固氮的效果。固氮效果最佳的是磷石膏,比对照提高了11.2%;其次为钙镁磷肥、过磷酸钙;过磷酸钙、钙镁磷肥、磷石膏与草炭的组合均有固氮效果,与对照比较,磷石膏+草炭的效果最佳。

In this study,different additives were added during the aerobic composting process of livestock manure to reduce the loss of nitrogen in the composting process.The addition of superphosphate,phosphogypsum and calcium magnesium phosphate can reduce the nitrogen loss.The best nitrogen fixation effect is phosphogypsum,which is 11.2%higher than the control;Among the composite additives,phosphogypsum and peat have the best effect.