The invention provides a biological organic /
inorganic compound fertilizer. The biological organic /
inorganic compound fertilizer contains 30-35% of total nutrients; the
nutrient ratio of N to P2O5to K2O is (6-15) to (5-18) to (6-25); the living
bacteria count in the bioactive organic insecticide-
fertilizer is 50 million / g to 100 million / g; besides, the biological organic /
inorganic compound fertilizer contains 15%-25% of organic matters, 0.15-0.20% of
nicotine, less than or equal to 3.0% of
chloride ions and less than or equal to 12% of
moisture, has the
fineness of 40-60 meshes and the pH of 6.0-7.0. The preparation method of the biological organic / inorganic compound fertilizer comprises the following steps: adding tobacco stems, cake
meal, pig
manure, artificial
humic acid and a microbial
fermentation agent to a mixer, adding water while mixing, and composting the materials for
fermentation to obtain the fermented and decomposed materials; next, adding the fermented and decomposed materials,
urea,
ammonium dihydrogen
phosphate,
potassium chloride,
active carbon nanopowder and a functional
microbial agent to the mixer, mixing evenly and crushing, screening to obtain
powder and packaging to obtain the biological organic / inorganic compound fertilizer which is high in content of
nitrogen,
phosphorus and
potassium inorganic nutrients and organic matters, and has environment-friendly and
insect-resistant effects.