Semi-solid fermentation powder formula of compost starter and preparation method thereof

The invention discloses a semi-solid fermentation powder formula of a compost starter and a preparation method thereof, and belongs to the technical field of compost fermentation. According to the formula, nutrient substances are provided for the growth of the mixed microbial inoculum; meanwhile, humic acid fermentation balls with core-shell structures are introduced in the fermentation culture process; on one hand, humic acid has an obvious promoting effect on the growth of the microbial inoculum; nutrition required by the vital movement of the microbial inoculum is provided; propagation andactivity of the microbial inoculum are promoted; on the other hand, the porous structure of the fermentation balls store oxygen needed in the initial stage of fermentation, the fermentation period isshortened, the fermentation effect is improved, the microbial agent is promoted to reach a high viable count, the high viable count is kept for a long time, and the fermentation balls can be adsorbedout through a magnet to be