Method for preparing organic fertilizer from banana straws, stems and leaves

The invention discloses a method for preparing an organic fertilizer from banana straws, stems and leaves, and belongs to the technical field of resource utilization of crop straws, wherein the methodcomprises the following steps: pretreating the banana straws, stems and leaves to obtain a mixed material, adding a mixed solution of magnesium chloride and monopotassium phosphate into the mixed material, and fully and uniformly mixing; and adding a fermentation microbial inoculum to obtain a mixed material, fermenting, crushing the fermented material, granulating, and drying to obtain the organic fertilizer. Magnesium chloride (MgCl2.6H2O) and potassium dihydrogen phosphate (KH2PO4) are added, magnesium ammonium phosphate precipitate is formed in compost to fix ammonium nitrogen in the compost, N loss is prevented, the water content of the granular fertilizer is lower than 15%, the nitrogen content is 3%-4%, and the nutritional value of the compost is effectively improved. 本发明公开了一种利用香蕉秸秆、茎叶制备有机肥的方法，属于农作物秸秆资源化利用