The invention relates to the technical field of soilless culture, and particularly discloses a
straw biomass seedling raising tray and a preparation method thereof. The
straw biomass seedling raising tray is prepared from a
straw fermented material, water, wood vinegar liquid and carbon-based
fertilizer according to the weight ratio of (90-110):(9-12):1:0.2; the components of the raw materials of the straw
biomass seedling raising tray cooperate with one another, so that the straw biomass seedling raising tray is rich in
organic matter and various elements required for the growth of crops, reasonable in EC value, moderate in pH value, high in water absorption and good in permeability, the aim of preparing and applying the
fertilizer according to the growth law of plants is truly achieved, and the healthy growth of seedlings is ensured. By adopting the seedling raising tray, the average seedling age is 15-20 days, the
effective length of white stalks is up to 5.7 cm, the
growth speed of the seedlings is increased, the seedling emergence rate of the seedlings reaches 99%, the
binding force of root systems is up to 34.5 N, underground parts of the seedlings have long main roots and many fibrous roots, seedlings turn green quickly after being transplanted, straw is thick and strong, and the
disease resistance and lodging resistance are improved.