Seedling culture substrate sheet and preparation method thereof

The invention provides a seedling culture substrate sheet which is prepared by the following steps that by taking livestock and poultry manure and corncob as main raw materials, micro-aerobic fermentation is conducted with an organic matter rapid decomposition agent to obtain a fermentation material, the fermentation material is mixed with a full-nutrient preparation, decomposition and aging are conducted, nutrients are stored in an organic state in an organic fertilizer, finally, the organic fertilizer, crushed agricultural organic waste, a disease prevention and weeding preparation and an adhesive are subjected to compression molding according to a certain mass ratio and dried to prepare the seedling culture substrate sheet. The full-nutrient preparation is added in the decomposition stage, nutrients in a micro-aerobic fermentation system can be gradually organized into organic-state nutrients to be stored in the organic fertilizer, and the total nutrient content of the organic fertilizer is greatly improve