Composite seaweed fertilizer and preparation method therefor

The invention discloses a composite seaweed fertilizer and a preparation method therefor. The composite seaweed fertilizer comprises the raw materials such as seaweeds, bagasse, tea leaf residues, tea tree leaves, broussonetia papyrifera leaves, ilex leaves, bacterium bran, fish pond sludge, garlic husk, pomegranate rind, eggshells, common ducksmeat herb, bean dregs, flavescent sophora roots, atractylodes rhizomes, Chinese stellera roots, mixed bacteria, phytase, betaine and the like. The seaweed fertilizer disclosed by the invention utilizes all components in the seaweeds and uses a great deal of waste, so that the cost of the seaweed fertilizer is low. The raw materials are effectively processed through a special fermentation technology, so that all the effective components in the raw materials are dissolved out; a large number of soil beneficial bacteria are also produced, so that the obtained seaweed fertilizer is rich in nutrition, and has good effects of reducing insect pests, increasing a crop yield and improving the crop quality.