Microbial fertilizer and preparation method

The invention discloses a microbial fertilizer which comprises the following elements by weight percent: 1% to 5% of microbial agents, 50 to 70% of chicken manure, 4% to 10% of wheat skin, 5% to 10% of humic acid and 15% to 30% of silverskin, wherein the microbial agent is a mixture of bacillus licheniformis, photosynthetic bacteria, bacillus subtilis and saccharomycetes; and the number of bacteria in the microbial agent reaches 80 to 10 billion per gram. The invention further discloses a preparation method of the microbial fertilizer. The method comprises the steps of mixing, stirring, accumulation, heap turning, crushing, granulation and the like. The multi-element microbial fertilizer provided by the invention has the characteristics of increase in crop yield and improvement on fertilizer efficiency, thereby being suitable of various crops.