Dedicated basal used for ecological cultivation of tobacco

The invention discloses a special basal fertilizer used in ecological tobacco leaf plantation. The invention belongs to the technical field of organic fertilizers. The special basal fertilizer used in ecological tobacco leaf plantation comprises components of, by weight: 19 to 23% of fermented cake fertilizer, 43 to 47% of biogas residue, 17 to 21% of common calcium superphosphate, 2.3 to 2.7% ofpotassium nitrate, 0.27 to 0.32% of borax, 0.8 to 0.9% of zinc sulfate heptahydrate, 9.5 to 9.9% of potassium sulfate, 0.05 to 0.15% of potassium humate, and 0.64 to 0.68% of mixed microbial manure. The basal fertilizer is prepared through steps that: (1) cake fertilizer and biogas residue are dried and crushed, such that a basic mixture is obtained; (2) the mixed microbial manure is added; and (3) common calcium superphosphate, potassium nitrate, borax, zinc sulfate heptahydrate, potassium sulfate, and potassium humate are added. With the basal fertilizer provided by the invention, soil micro ecological environment can be repaired or protected, tobacco plant disease resistance can be improved, quality of fire-cured tobacco can be improved, and ecological tobacco production can be continuously and healthily developed.