TECHNOLOGY FOCUS - AGRICULTURE - Preferred Parameters: Peat has particle size of 0.08-0.1.    TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Compositions: Number ratio of T. harzianum, B. subtilis, S. cerevisia, and M. anisoplia is 7:30:5:8. Preferred Parameters: T. harzianum has preservation number of CGMCC No. 7861, B. subtilis has preservation number of CGMCC No. 7850, S. cerevisia has preservation number of CGMCC No. 7849, and M. anisoplia has preservation number of CGMCC No. 7848. Preferred Processes: T. harzianum fermentation liquid is prepared by inoculating T. harzianum strain in activating culture medium containing 20 wt.% potato, 2 wt.% glucose, and 2 wt.% agar with pH of 7-7.5, culturing at 28-30 degrees C for 70-74 hours to obtain activated T. harzianum strain, inoculating in 1st liquid culture medium containing 5 wt.% wheat bran at 26-30 degrees C, shaking flask at speed of 110-130 rpm for 12-16 hours to obtain T. harzianum 1st-stage seed liquid, inoculating in 2nd liquid culture medium containing 5 wt.% corn powder, 0.05 wt.% ammonium sulfate, 0.02 wt.% defoaming agent, 0.0005 wt.% penicillin potassium, and 0.0003 wt.% streptomycin sulfate injection with pH of 4-4.5 at seed fermenting tank at 26-30 degrees C and speed of 110-130 rpm for 16-20 hours to obtain T. harzianum 2nd-stage seed liquid, and inoculating in 2nd liquid culture medium at fermentation tank at speed of 150-170 rpm and pressure of 0.04-0.06 MPa for 84-90 hours. B. subtilis fermentation liquid is prepared by inoculating B. subtilis strain in activating culture medium containing 0.3 wt.% beef extract, 0.5 wt.% peptone, 0.5 wt.% sodium chloride (NaCl), and 2 wt.% agar with pH of 7-7.5, culturing at 28-30 degrees C for 22-26 hours to obtain activated B. subtilis strain, inoculating in 1st liquid culture medium containing 0.3 wt.% beef extract, 0.5 wt.% NaCl, and 0.7 wt.% peptone with pH of 7 at 30-34 degrees C, shaking flask at speed of 170-190 rpm for 8-10 hours to obtain B. subtilis 1st-stage seed liquid, inoculating in 2nd liquid culture medium containing 2 wt.% soybean powder, 0.5 wt.% fish meal, 1.8 wt.% corn flour, 0.4 wt.% starch, 0.06 wt.% magnesium sulfate, 0.5 wt.% dipotassium hydrogen phosphate, and 0.025 wt.% defoaming agent with pH of 7-7.5 at 30-34 degrees C, culturing at speed of 210-230 rpm for 8-10 hours to obtain B. subtilis 2nd-stage seed liquid, and inoculating in 3rd liquid culture medium in fermentation tank at speed of 210-230 rpm and pressure of 0.04-0.06 MPa for 28-32 hours. S. cerevisia fermentation liquid is prepared by inoculating S. cerevisia strain in activating culture medium containing 1 wt.% yeast extract, 2 wt.% peptone, 2 wt.% glucose, and 2 wt.% agar with pH of 7-7.5, culturing at 28-30 degrees C for 70-74 hours to obtain activated S. cerevisia strain, inoculating in 1st liquid culture medium containing 1 wt.% yeast extract, 2 wt.% peptone, and 2 wt.% glucose with pH of 7 at 26-30 degrees C, shaking flask at speed of 170-190 rpm for 8-10 hours to obtain S. cerevisia 1st-stage seed liquid, inoculating in 2nd liquid culture medium containing 5 wt.% glucose, 0.5 wt.% peptone, 0.5 wt.% yeast extract, 0.1 wt.% magnesium sulfate, 0.1 wt.% potassium dihydrogen phosphate, and 0.05 wt.% defoaming agent in fermentation tank at 26-30 degrees C and speed of 210-230 rpm for 8-10 hours to obtain S. cerevisia 2nd-stage seed liquid, and inoculating in 2nd liquid culture medium at fermentation tank at speed of 210-230 rpm and pressure of 0.01-0.06 MPa. M. anisoplia fermentation liquid is prepared by inoculating M. anisoplia strain in activating culture medium containing 20 wt.% potato, 2 wt.% glucose, and 2 wt.% agar with pH of 7-7.5, culturing at 28-30 degrees C for 70-74 hours to obtain activated M. anisoplia strain, inoculating in 1st liquid culture medium containing 5 wt.% fine wheat bran at 26-30 degrees C, shaking flask at speed of 110-130 rpm for 12-16 hours to obtain M. anisoplia 1st-stage seed liquid, inoculating in 2nd liquid culture medium containing 5 wt.% corn powder, 0.05 wt.% ammonium sulfate, 0.02 wt.% defoaming agent, 0.0005 wt.% penicillin potassium, and 0.0003 wt.% streptomycin sulfate injection with pH of 4-4.5 at 26-30 degrees C and speed of 110-130 rpm for 16-20 hours to obtain M. anisoplia 2nd-stage seed liquid, and inoculating in 2nd liquid culture medium at fermentation tank at speed of 150-170 rpm and pressure of 0.04-0.06 MPa for 84-90 hours. Straw composting agent is manufactured by crushing into powder.