NOVELTY - Microbial fertilizer comprises brown spherical solid nitrogen fixing bacteria Xll strain ( greater than or equal to 2 hundred million of viable bacteria/g), Bacillus cereus B81 strain fermentation liquid ( greater than or equal to 2 hundred million of viable bacteria/g), grass and diatomite.    USE - The microbial fertilizer is useful in agriculture, flower culture, corn planting, vegetable planting, potato planting and wheat.    ADVANTAGE - The fertilizer improves soil fertility even using less amount, and crop yield, and can be simply and cost-effectively manufactured.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for manufacturing microbial fertilizer, which involves (a) inoculating germ-free brown spherical solid nitrogen fixing bacteria Xll strain in test tube liquid culture medium, culturing the strain at 20-45 degrees C for 18-72 hours, inoculating the culture in solid culture medium, culturing the strain at 20-45 degrees C for 18-72 hours, selecting typical colony based on morphology characteristics, selecting freeze-dried B.cereus B81 strain, inoculating the selected strain in nutrient broth culture medium in test tube, culturing at 20-45 degrees C for 18-48 hours, inoculating culture in nutrient agar solid culture medium, culturing at 20-45 degrees C for 18-48 hours, and selecting typical colony based on morphology characteristics, (b) inoculating the pure brown spherical solid nitrogen fixing bacteria Xll strain in liquid culture medium, culturing at 20-45 degrees C for 18-72 hours in shake flask, inoculating pure B.cereus B81 strain in nutrient broth liquid culture medium, culturing at 20-45 degrees C for 18-48 hours in a shake flask, and detecting the pure bacterial characters, (c) preparing test tube liquid culture medium (1000 ml) by adding (in g) glucose (5-15), dipotassium phosphate (0.01-0.34), magnesium sulfate (0.01-0.34), sodium chloride (0.01-0.34), calcium sulphate (0.01-0.34), calcium carbonate (1-8) to distilled water, heating and dissolving the mixture, adjusting pH value of the mixture to 7-7.4, sterilizing the mixture at 112-115 degrees C for 20-30 minutes, (d) preparing nutrient broth culture medium (1000 ml) by adding beef extract (2-8), peptone (8-12) and sodium chloride (3-7) to distilled water, heating the mixture to dissolve the mixture, adjusting pH value of the mixture to 7.2-7.6, sterilizing the mixture at 121 degrees C for 20-30 minutes, (e) inoculating the above obtained pure bacterial suspension of brown spherical solid nitrogen fixing bacteria Xll (5-15%) into fermentation tank containing the culture medium prepared in step (c), culturing at 20-37 degrees C for 48-96 hours, inoculating B.cereus B81 strain (5-15%) into fermentation tank containing the nutrient broth culture medium, and culturing at 25-45 degrees C for 48-72 hours, (f) counting the aseptic brown spherical solid nitrogen fixing bacteria Xll using blood cell counting plate under electron microscope, where the strain reaches 200 hundred million/ml, counting sterile B.cereus B81 strain using blood cell counting plate under electron microscope, where the strain reaches 20 hundred million/ml, and detecting spore generated ratio, where the spore rate reaches more than 90%, (g) centrifuging the culture which does not have contamination to obtain supernatant, and concentrating the supernatant to obtain wet thallus, (h) sterilizing grass and diatomite at 100-160 degrees C for 1-4 hours, and (i) mixing the sterilized grass and diatomite in a ratio of 10-90%:90-10%, mixing the obtained wet thallus with the above mixtire, stirring the mixture, drying the mixture at 40-70 degrees C to obtain dry powder, where the dry powder is microbial fertilizer.