TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Method: The method for cultivating S. cerevisiae comprises activating the parent S. cerevisiae seed by adding into a slope activation culture medium; cultivating at 28-30 degrees C for 24-48 hours; inoculating the activated S. cerevisiae (5-30 wt.% based on the weight of the culture medium) into the seed culture medium; performing first-level seed culture on the same conditions for 24-48 hours; inoculating S. cerevisiae liquid of the first-level seed culture (5-30 wt.% based on the weight of second-level seed culture medium) to second-level seed culture medium; performing second-level seed culture on the same conditions for 24-48 hours; and obtaining S. cerevisiae liquid. The method for cultivating B. laterosporus comprises activating the parent B. laterosporus seed by adding into a slope activation culture medium; cultivating at 32-35 degrees C for 24-48 hours; inoculating the activated B. laterosporus (5-30 wt.% based on the weight of culture medium) into the seed culture medium; performing first-level seed culture on the same conditions for 24-48 hours; inoculating B. laterosporus liquid of the first-level seed culture (5-30 wt.% based on the weight of second-level seed culture medium) to second-level seed culture medium; performing second-level seed culture on the same conditions for 48-72 hours; and obtaining B. laterosporus liquid. The method for cultivating B. megaterium comprises activating the parent B. megaterium seed by adding into a slope activation culture medium; cultivating at 32-35 degrees C for 24-48 hours; inoculating the activated B. megaterium (5-30 wt.% based on the weight of culture medium) into the seed culture medium; performing first-level seed culture on the same conditions for 24-48 hours; inoculating B. megaterium liquid of first-level seed culture (5-30 wt.% based on the weight of second-level seed culture medium) to second-level seed culture medium; performing second-level seed culture on the same conditions for 48-72 hours; and obtaining B. megaterium liquid.    TECHNOLOGY FOCUS - METALLURGY - Preferred Method: Step (D) comprises adding microelements i.e. iron, zinc, copper, manganese, molybdenum, boron, and magnesium to adjust. ACTIVITY - Fertilizer.