NOVELTY - Rice soilless seedling special substrate comprises e.g. 8-12 pts. wt. argil, 4-6 pts. wt. Sphagnum, 8-12 pts. wt. rice shell ash, 15-25 pts. wt. modified rice straw powder, 1-3 pts. wt. garlic powder, 0.2-1 pts. wt. fennel powder, 4-6 pts. wt. sea mud, 4-6 pts. wt. sepiolite cashmere, 0.2-1 pts. wt. purple sweet potato anthocyanin, 1-3 pts. wt. sodium selenite, 0.2-1 pts. wt. tea alkaloid, 1-3 pts. wt. cicada slough powder, 1-3 pts. wt. seaweed micro-powder, 1-3 pts. wt. water-soluble potassium, 5-7 pts. wt. urea, 0.2-1 pts. wt. soybean meal, and 1-3 pts. wt. chelated zinc.    USE - Used as rice soilless seedling special substrate.    ADVANTAGE - The substrate contains organic substance of more than 40%, humic acid more than 20%, beneficial microorganism 60000000 per ml, improves root hairs, avoids disease occurrence, improves survival of root, and increases productivity.    DETAILED DESCRIPTION - Rice soilless seedling special substrate comprises 8-12 pts. wt. argil, 4-6 pts. wt. Sphagnum, 8-12 pts. wt. rice shell ash, 15-25 pts. wt. modified rice straw powder, 1-3 pts. wt. garlic powder, 0.2-1 pts. wt. fennel powder, 4-6 pts. wt. sea mud, 4-6 pts. wt. sepiolite cashmere, 0.2-1 pts. wt. purple sweet potato anthocyanin, 1-3 pts. wt. sodium selenite, 0.2-1 pts. wt. tea alkaloid, 1-3 pts. wt. cicada slough powder, 1-3 pts. wt. seaweed micro-powder, 1-3 pts. wt. water-soluble potassium, 5-7 pts. wt. urea, 0.2-1 pts. wt. soybean meal, 1-3 pts. wt. chelated zinc, 0.2-1 pts. wt. folium artemisiae argyi, 0.5-1.5 pts. wt. calcined kaolin, 0.2-1 pts. wt. aqueous peppermint extract, 0.2-1 pts. wt. sodium nitrophenolate, 1-3 pts. wt. rapeseed cake, 0.2-1 pts. wt. tobacco, and 0.2-1 pts. wt. shell powder. An INDEPENDENT CLAIM is also included for preparing rice soilless seedling special substrate comprising (i) providing each component, smashing and sieving through 40 meshes sieve, and mixing uniformly to obtain mixed material, (ii) adding mixture into freezing device, freezing for 5-6 hours at 12 degrees C, then again adding into a drying device, roasting for 5-8 minutes at 75-80 degrees C to obtain the roasted material, (iii) adding adhesive in baked material, placing in a pelletizer, preparing substrate with the grain diameter of 0.5-2 mm, where the modified rice straw powder is prepared by taking rice straw, smashing and drying so that the water content is 5%, where the mass ratio of straw powder and modifier is 37:1.4, mixing uniformly and placing into a reaction kettle, controlling the reactor temperature at 80-85 degrees C, stirring for 20-30 minutes, removing the straw powder and cooling to room temperature, adding into a freezing device, freezing for 40 minutes at less than 15 degrees C, carrying on cold treatment, and using obtained modified straw powder for future use, where the modifier comprises 10-15 pts. wt. corn starch, 5-10 pts. wt. rare earth oxide, 15-20 pts. wt. xylitol solution, 2-4 pts. wt. yeast powder, 1-3 pts. wt. capsaicin, 2-4 pts. wt. nano silicon nitride, and 2-3 pts. wt. hydroxypropyl- beta -cyclodextrin.