The invention discloses an
earthworm compost upgrading method based on a
bacillus velezensis BV-1 aerobic
compost product. Comprising the following steps: by taking an aerobic
compost rotten product pretreated by
bacillus velezensis BV-1 as a substrate, adjusting the
moisture content of the substrate to a proper value without additionally adding a conditioner, inoculating eisenia foetida, performing
earthworm composting in a dark environment, slightly turning piles every 4-5 days during the period to prevent anaerobism, and maintaining the
moisture content of the substrate to be stable. The quality of the
earthworm cast is remarkably improved through'matrix
advantage +
microorganism continuation effect 'of a BV-1 aerobic composting product, and the
total nitrogen content of the earthworm cast reaches 18.29 g / kg and is improved by 12.6% compared with that of a control group; the
conductivity is reduced to 1.84 mS / cm and is reduced by 8.91% compared with that of a control group; meanwhile, a
nitrogen cycle functional
gene (the relative expression quantity of the nosZ
gene is increased by 15 times compared with that of a control group) is activated,
organic matter degrading
bacteria Arenibacter (the relative abundance is 8.37%) are enriched, and unification of
high nitrogen,
low salt and high
biological activity of earthworm compost products is achieved.