Low-cost ecological organic fertilizer with a weight ratio of base material to nutrient solution of 800 to 1200:1 enhances soil quality, increases crop yield, and improves fertilizer efficiency. The base material includes: pig manure (0-90), chicken manure (0-6), okara (0-8), wheat bran (0-4), sugar (0-3), distillers grains (0-2), brewer's grain (0-19), and corn flour (0-4). The nutrient solution contains compound bacteria (lactic acid bacteria, yeasts, photosynthetic bacteria, Gram-positive actinomycetes) mixed with water in a ratio of 1:10 to 25