NOVELTY - A vegetable-waste-decomposing inoculant agent comprises 0.5-2 pts. wt. Phanerochaete chrysosporium, 0.5-2 pts. wt. Trichoderma harzianum, 0.5-2 pts. wt. Bacillus subtilis, and 0.5-2 pts. wt. Bacillus mucilaginosus in which composite inoculant has valid viable count of 4x 108/g.    USE - A vegetable-waste-decomposing inoculant agent for decomposing cellulose and lignin, resisting cucumber blight, and producing organic substrate used for tomato seedlings (all claimed).    ADVANTAGE - Organic substrate increases yield and soil organic matter, phosphorus, and potassium content, improves nutrient conversion rate and beneficial microorganism content in product, promotes soil remediation and fertility, enhances disease resistance of crops, and reduces investment.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) use of vegetable-waste-decomposing inoculant agent which involves adjusting carbon:nitrogen ratio to 25-30:1 and moisture content to 55-60% in vegetable waste, adding 1 kg decomposing inoculant agent to each 5 square vegetable waste, turning and pounding, stacking to form trapezoid, starting fermentation, maintaining temperature for 3 days and pounding once when material temperature reaches 55 degrees C, adjusting water content and stirring once a day if temperature does not increase during fermentation, maintaining temperature for 3 days and pounding once when material temperature reaches 55 degrees C, pounding, turning when temperature does not rise during pounding, and repeating pounding and turning until reactor temperature is the same as outside temperature and water content is less than or equal to 30% in which total fermentation time is 15-25 days;    (2) organic substrate comprising decomposed vegetable waste fermented by vegetable-waste-decomposing inoculant agent in which 1 kg decomposing inoculant agent is added to each 5 square vegetable waste, and vegetable waste comprises 40-60 pts. wt. eggplant straw pole, 20-40 pts. wt. cucumber seedling, 5-15 pts. wt. cabbage leaf, and 5-15 pts. wt. lignite; and    (3) production of organic substrate which involves crushing dry eggplant straw pole and dry cucumber seedling to length of 2-5 cm, mixing eggplant straw pole, cucumber seedling, cabbage leaf, and lignite with humic acid content of greater than or equal to 50% to form mixed material, mixing water:mixed material with weight ratio of 1:1, controlling moisture content at 50-60%, adding 1 kg decomposing inoculant agent to each 5 square vegetable waste, stacking to form trapezoid, starting fermentation, maintaining temperature for 3 days and pounding once when material temperature reaches 55 degrees C, maintaining temperature for 3 days and pounding once when material temperature reaches 55 degrees C, turning and pounding, stopping fermentation when reactor temperature is the same as outside temperature and water content is less than or equal to 30% crushing, sieving, testing, weighing, and packaging in which total fermentation time is 15-20 days or 25-30 days during winter, fecal coliform amount is negative in 45-55% organic substrate, and organic substrate has 100% ascarid egg death rate.