TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Composition: Mixed bacterial culture includes 40 pts. wt. Actinomyces, 40 pts. wt. photosynthetic bacteria and 20 pts. wt. yeast. Preferred Components: Mixed bacterial culture is prepared by: (A) taking water, heating to 65 degrees C, adding 1 kg bran, 1 kg pea juice, 50 kg peptone, 1 kg potassium nitrate, 50 g sodium chloride, 50 g dipotassium hydrogen phosphate, 50 g magnesium sulfide and 12 g ferric sulfate, dissolving in hot water, heating to 100 degrees C, adding 20 kg agar, stirring, adding 700 L water, adjusting pH value to 7.3, and sterilizing at 121.3 degrees C for 30 minutes; (B) taking 300 L water, heating to 65 degrees C, adding 1 kg bran, 1 kg pea juice, 50 kg peptone, 1 kg potassium nitrate, 50 g sodium chloride, 50 g dipotassium hydrogen phosphate, 50 g magnesium sulfide and 12 g ferric sulfate, dissolving in hot water, heating to 100 degrees C, adding 2.5 kg agar, stirring, adding 700 L water, adjusting pH value to 7.3, and sterilizing at 121.3 degrees C for 30 minutes; (C) inoculating Actinomyces on slant culture medium, culturing at 28 degrees C for 60 hours with humidity of 45%, inoculating broth, and culturing at 28 degrees C for 5-14 days; (D) taking 300 L water, heating to 65 degrees C, adding 55 g peptone, 1.15 kg sodium acetate, 600 g sodium carbonate, 400 g sodium thiosulfate, 350 g sodium chloride, 50 g dipotassium hydrogen phosphate and 125 g magnesium sulfate, dissolving in hot water, heating to 100 degrees C, adding 20 kg agar, stirring, adding 700 L water, adjusting pH value to 8.2, and sterilizing at 121.3 degrees C for 30 minutes; (E) taking 300 L water, heating to 65 degrees C, adding 55 g peptone, 1.15 kg sodium acetate, 600 g sodium carbonate, 400 g sodium thiosulfate, 350 g sodium chloride, 50 g dipotassium hydrogen phosphate and 125 g magnesium sulfate, dissolving in hot water, heating to 100 degrees C, adding 2.5 kg agar, stirring, adding 700 L water, adjusting pH value to 8.2, and sterilizing at 121.3 degrees C for 30 minutes; (F) inoculating photosynthetic bacteria on slant, culturing at 28-36 degrees C for 40 hours with illumination intensity of 3500 lux with humidity of 45%, inoculating broth, and culturing at 30 degrees C for 4-7 days with illumination intensity of 3500 lux; (G) taking 300 L water, heating to 65 degrees C, adding 125 g sugar, 100 g potassium nitrate, 500 g sodium chloride, 500 g dipotassium hydrogen phosphate, 500 g magnesium sulfate and 8 g ferric sulfate, dissolving in hot water, heating to 100 degrees C, adding 20 kg agar, stirring, adding 700 L water, adjusting pH value to 5.0, and sterilizing at 121.3 degrees C for 30 minutes; (H) taking 300 L water, heating to 65 degrees C, adding 125 g sugar, 100 g potassium nitrate, 500 g sodium chloride, 500 g dipotassium hydrogen phosphate, 500 g magnesium sulfate and 8 g ferric sulfate, dissolving in hot water, heating to 100 degrees C, adding 2.5 kg agar, stirring, adding 700 L water, adjusting pH value to 5.0, and sterilizing at 121.3 degrees C for 30 minutes; (I) inoculating slant with yeast, cultivating at 25 degrees C for 40 hours with humidity of 45%, inoculating broth, culturing at 25 degrees C for 5-10 days; and (J) harvesting, taking photosynthetic bacteria, yeast and Actinomyces, and mixing. ACTIVITY - Fertilizer; Insecticide; Plant Growth Stimulant.