NOVELTY - Multi-element composite microbial fertilizer preparation involves selecting and mixing powder material of rice hull, wheat husk, fungal residues, peat, bagasse, grain stillage and plant ash, and then screening the powder through 0.1-2cm screen to obtain sample A. Anabaena azotica, Chlorella vulgaris, Eunotia lunaris, Chroococcus and Chlamydomonas sajao are fermented, and then obtained alga liquid is absorbed by sample A. All five algae agents are mixed uniformly in weight ratio of 10-50:0-25:0-30:5-55:0-35 to obtain sample B.    USE - Method for preparing multi-element composite microbial fertilizer (claimed) used for preventing and treating physiological disease caused due to lack of manganese in plant.    ADVANTAGE - The method enables to prepare the multi-element composite microbial fertilizer that can increases supply of effective nutrition in soil, improve physicochemical properties of soil, promote growth of plant and improve yield and quality of agricultural crops.    DETAILED DESCRIPTION - Multi-element composite microbial fertilizer preparation involves selecting and mixing powder material of rice hull, wheat husk, fungal residues, peat, bagasse, grain stillage and plant ash, and then screening the powder through 0.1-2cm screen to obtain sample A. Anabaena azotica, Chlorella vulgaris, Eunotia lunaris, Chroococcus and Chlamydomonas sajao are fermented, and then obtained alga liquid is absorbed by sample A. All five algae agents are mixed uniformly in weight ratio of 10-50:0-25:0-30:5-55:0-35 to obtain sample B. Powder material of zeolite, roseite, turface, bovey coal, fly ash, bentonite, peat and diatomite are selected and then uniformly mixed. The mixture is screened by 0.1-2cm screen to obtain sample C. Rhodopseudomonas palustris, Bacillus megaterium, Bacillus subtilis, Streptomyces jingyangensis and Bacillus mucilaginosus are fermented and then the sample C is absorbed in algae liquid. All five algae agents are mixed uniformly in weight proportion of 5-35:5-50:0-35:0-25:10-55 to obtain sample D. Threonine (10-35wt.%), lysine, methionine and tryptophan are placed in a reaction kettle, where water (10-35wt.%) is added to the kettle to dissolve the mixture. Methanol (0.5-5.5wt.%) or ethanol is added to the kettle for performing the reaction for 0.5-3.5 hours at 20-65 degrees C. Humic acid (0-15wt.%) and valonea extract are added to the reaction kettle and then manganese sulfate (25-65wt.%) is added to the reaction kettle for performing complex reaction for 0.5-8 hours at 65-115 degrees C. The mixture is cooled at room temperature and then pressurized at 2-5kg/cm2. The mixture is kept for 15-38 hours for curing and drying to obtain sample D. The final product is obtained by mixing the sample B (10-65wt.%), sample D (20-60wt.%), the sample E (5-20wt.%) and animal manure (0-8wt.%).