The invention provides a spruce culture medium prepared from a cassava stalk. The cassava stalk and the spruce
skin are respectively smashed into different sizes of particles,
after treatment of
pile fermentation, the ectomycorrhizal fungi of the spruce is added into the particles and then blended uniformly so as to obtain the spruce culture medium, the spruce culture medium comprises the following
raw material components according to parts by weight: 4-5 parts of
pile fermenting cassava stalk base material and 5-6 parts of
pile fermenting spruce
skin base material, the pile fermenting cassava stalk
powder base material comprises 100 parts of cassava stalk
powder, 100 parts of
chicken manure, 0.1 part of cassava
powder, 5 parts of superphosphate, 0.05 part of slaked
lime powder, and 0.02 part of an
enzyme microorganism agent, and the pile fermenting spruce
skin powder base material comprises 100 parts of spruce skin powder, 2 parts of
urea, 0.02 part of slaked
lime powder, and 0.01 part of 95% hymexazol
wettable powder. The spruce culture medium makes full use of
processing residue of
agriculture and
forestry, so that the culture of
seedling cost is lowered; and the culture medium has the particles with proper size, has a loose structure, is high in
organic matter content, contains multiple microelements, is proper in power of
hydrogen, has less germ, and is very suitable for growth of spruce seedlings.