NOVELTY - A composite plant root powder comprises 3-5 pts. wt. sodium borate, 43-46 pts. wt. lees, 40-42 pts. wt. straw fiber, 5-8 pts. wt. talc powder, 4-6 pts. wt. potassium sulfate, 15-19 pts. wt. maple syrup, 24-28 pts. wt. potassium humate, 2-4 pts. wt. ferrous sulfate, 26-30 pts. wt. hawthorn, 35-39 pts. wt. fresh plum, 72-75 pts. wt. papaya and balance water.    USE - Composite plant rooting powder.    ADVANTAGE - The rooting powder has reasonable proportion and high rooting rate and survival rate, promotes plant growth, stimulates growth and development of root, increases capacity of nutrient absorption and increases plant quality.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of composite plant rooting powder comprising:    (A) cutting papaya into slices, drying, crushing to 80-100 mesh, adding 20 times of 95% ethanol solvent, ultrasonically processing at room temperature for 3-4 times for 20-30 minutes each, combining supernatants, adding ferrous sulfate and sodium borate, heating to 65-75 degrees C, stirring for 25-35 minutes and drying to obtain composite powder;    (B) entering fresh plum into crushing machine, fully crushing, filtering with gauze, collecting crushing slag and crushing liquid, centrifuging crushing liquid at speed of 7800-8000 revolutions/minute for 3-5 minutes to obtain high-purity centrifugal liquid and mixing centrifugal slag and crushing slag to obtain slag mixture;    (C) mixing lees, straw fiber and potassium humate, entering into fermentation tank, controlling water content at 35-45%, fermenting for 21-25 days, warp cloth filtering to obtain fermentation liquid and fermentation slag, heating fermented liquid to 63-67 degrees C and membrane distilling by hydrophobic microporous membrane to obtain concentrated fermentation liquid;    (D) taking slag mixture, fermentation slag and composite powder, mixing with potassium sulfate mixture, drying and crushing to obtain mixed powder; and    (E) mixing high-purity centrifugal liquid, concentrated fermentation liquid, maple syrup and remaining materials, heating to 70-75 degrees C, uniformly stirring, high-pressure spraying to mixed powder, stirring and drying.