A method for preparing a solid Trichoderma seed from direct fermentation of crop straws with Trichoderma, and a product prepared by using the same. The method includes adding a liquid amino acid to the crop straws, adjusting the initial pH to 3.0-4.0, and inoculating a liquid Trichoderma seed for solid fermentation. An acidity that allows Trichoderma to grow and multiply rapidly and inhibits the growth of other non-target fungi is established in the material by adjusting its pH value, an optimum nutritional formula for Trichoderma is screened out, and an inexpensive proprietary process for preparing a solid Trichoderma seed through fermentation is established. 1% of the solid Trichoderma seed is added to a matured compost, which allows the density of Trichoderma spores in the Trichoderma amended bioorganic fertilizer to reach above 5×107 spores/g, and the production increasing effect is considerable after the Trichoderma amended bioorganic fertilizer is applied.
