Preparation method of composite organic high-water-holding-capacity culture medium material

The invention discloses a preparation method of a composite organic high-water-holding-capacity culture substrate material, and relates to the technical field of plant culture substrates, and the composite organic high-water-holding-capacity culture substrate material comprises the following raw materials: polyvinyl alcohol, wood flour, a foaming agent, a cross-linking agent and water. The slow release fertilizer contains a large amount of organic matters, can realize slow release of nutrients in a matrix and promote growth and development of plants, has water holding capacity which is about 2-3 times of the weight of the slow release fertilizer, can realize slow release of organic matter nutrients, and is environment-friendly, pollution-free to the environment, low in cost, simple in process and easy for industrial large-scale production. 本发明公开了一种复合型有机高持水栽培基质材料的制备方法，涉及植物栽培基质技术领域，包括以下原材料：聚乙烯醇、木粉、发泡剂、交联剂、水。本发明且本身含有大量有机质，在基质中可以实现养分的缓慢释放，促进植物生长发育，具有自身重量约2~3倍的持水能力，可以实现有机质养分的缓慢释放，环保，对环境无污染，成本低，工艺简单，易于工业化大规模生产。