Seaweed fertilizer applied to organic vegetable planting and preparation method

The seaweed fertilizer applied to organic vegetable planting is prepared from, by weight, 50-56 parts of dried kelp powder, 10-15 parts of compound enzyme, 5-8 parts of enzyme microorganism, 40-50 parts of straw, 5-12 parts of plant ash, 2-7 parts of pH regulator and 40-80 parts of water, and the preparation method comprises the steps that after raw materials are weighed, the dried kelp powder and the compound enzyme are mixed and then added into a fermentation container containing water, and the mixture is stirred to be uniform; fermenting to obtain fermentation liquor; the fermentation liquor is placed in a constant-temperature shaking table with the rotating speed of 200-300 r/min, a PH regulator is added at the temperature of 5-10 DEG C, and the seaweed liquid fertilizer is obtained after 2-3 days. The preparation method comprises the following steps: adding enzyme microorganisms and plant ash into a seaweed liquid fertilizer, uniformly mixing, covering the surface of the liquid fertilizer with straws, an