The invention relates to the technical field of soil conditioners, in particular to a
biomass charcoal soil conditioner containing biological
stimulant and a preparation method of
biomass charcoal soil conditioner. The
biomass charcoal soil conditioner is prepared from 20-40 parts of biological
stimulant, 10-30 parts of active
calcium, 5-10 parts of alkali residues, 5-15 parts of
plant ash and 10-20 parts of biomass charcoal; the active nano
calcium and the biological
stimulant can directly reach cells of crops, and the effect of increasing the yield is remarkable; the biomass charcoal has high
aromatization degree, large specific surface area, well-developed pore structure and various organic functional groups, and has strong adsorption capacity for
heavy metals. To sum up, the soil conditioner adopts the five substances, namely, the biological stimulant, the active
calcium, the alkali residues, the
plant ash and the biomass charcoal to cooperate with one another, finally, it is realized that acid soil can be improved rapidly, the soil permeability can be effectively improved, soil hardening is avoided, heavy
metal contaminated soil is repaired, soil microbial activity is promoted, the ability of soil to maintain water and a
fertilizer is enhanced, the consumption of the
fertilizer is reduced, the
utilization rate of the
fertilizer is increased, and the effect of increasing the yield of the crops is remarkable.