Method for preparing composite organic type environment-friendly seedling culture medium block

The invention discloses a method for preparing a composite organic type environment-friendly seedling culture medium block. The method comprises the following steps: performing biological fermentation treatment on stems and leaves of bananas and pineapples by using a composite fermentation bacterial agent so as to obtain an ideal seedling culture host material, subsequently mixing the seedling culture host material with coco coir, and adding an adhesive for curing and formation, thereby preparing the composite organic type environment-friendly seedling culture medium block. The composite organic type environment-friendly seedling culture medium block prepared by using the method is light in weight and good in physical property, the permeability, the nutrient content and the physical property of the medium block are all superior to those of peat, and the effect of the medium block is also superior to that of peat when being used for a growth experiment of vegetable seedling culture.