Seedling raising substrate and preparation method thereof

The invention relates to the technical field of seedling raising, and provides a seedling raising substrate which comprises the following components in parts by weight: 50-70 parts of coal water slurry gasification slag, 10-20 parts of vermiculite, 10-20 parts of pearlite, 1-10 parts of clay, 1-10 parts of pyroligneous liquor, 1-10 parts of diatomite, 60-70 parts of decomposed animal waste, 30-40 parts of humic acid and 1-10 parts of citric acid. According to the seedling culture substrate, waste recycling can be achieved, environmental pollution is reduced, and therefore the production cost is reduced. 本发明涉及育苗技术领域，提供了一种育苗基质，按重量份数计，包括水煤浆气化渣50-70份、蛭石10-20份、珠光沙10-20份、粘土1-10份、木醋液1-10份、硅藻土1-10份、腐熟动物粪便60-70份、腐植酸30-40份、柠檬酸1-10份；本发明育苗基质可实现废物再利用，降低环境污染，从而降低生产成本。