NOVELTY - Streptomyces silaceus SCXL-S9 CGMCC No. 7256 carried on the Shenzhou 9 spaceship, is new.    USE - The Streptomyces silaceus SCXL-S9 carried on the Shenzhou 9 spaceship is useful for preparing space microbial fertilizer (claimed).    ADVANTAGE - The fertilizer increases cotton and potato planting yield.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for using Streptomyces silaceus for preparing space microbial fertilizer, comprising: (a) adding organic mixture fermented base material with a moisture content of 25%, compacted stacking and covering by a plastic film for sealing, naturally fermenting when the stacking temperature reaches more than 65 degrees C, stacking fermenting for 15-30 days and turning over for 5-10 times, where the organic mixture ferment base material comprises an organic base material and an organic matter decomposed complex microbial inoculum, the added amount of organic base is 1% of the weight of decomposed complex microbial inoculum, the organic base material comprises livestock excrement, straw and humic acid in a weight ratio of 7:3:2, the decomposed complex microbial inoculum comprises mixture of Bacillus subtilis Ehreuberg Cohn, Sporotrichum thermophile Apinis and Trichoderma harzianum in a weight ratio of 1:1:1, and the three kinds of microbial inoculum are prepared based on the traditional method, (b) selecting microbial inoculum for fermenting the Streptomyces silaceus, culturing, inoculating the spores in a inclined surface culture medium, culturing at 28 degrees C for 8 days to obtain gas generating mycelium, that is inclined strain, inoculating into 500 ml glass bottle containing 100 ml seed culture medium, culturing at 28 degrees C with a speed of 180 revolutions/minute for 96 hours to obtain the seed liquid, culturing the seed liquid at 28 degrees C with a speed of 180 revolutions/minute for 10 days, harvesting the fermentation liquid to obtain Streptomyces silaceus SCXL-S9 microbial inoculum, where the inclined surface culture medium and seed culture medium used are No.1 Gouraud culture medium, (c) adding the prepared 5 wt.% Streptomyces silaceus SCXL-S9 microbial inoculum into the prepared fermented organic base material, and completely stirring to obtain the space microbial fertilizer.