The invention discloses microbial compound bacterial
fertilizer. The microbial compound bacterial
fertilizer is prepared from the following components in parts by weight: 5 to 25 parts of compound microorganisms, 65 to 95 parts of compound
nutrient carrier, 0.5 to 2 parts of EDTA (
Ethylene Diamine Tetraacetic Acid)-
metal chelate and 5 to 10 parts of diatomite. The invention further discloses a preparation method of the microbial compound bacterial
fertilizer and application of the microbial compound bacterial fertilizer to soil improvement and promotion of
crop growth and development. Comparedwith the prior art, the microbial compound bacterial fertilizer has the advantages that ingredients play a synergetic role, so that soil can be effectively improved, hardening parts can be loosened,nutrients can be balanced, the
soil fertility can be improved, the soil components can be activated, the water and fertilizer retention capabilities of soil can be improved, and production increase ofthe crops can be promoted. Meanwhile, a production process is simple, raw materials are easy to obtain, the ingredients are derived from low-cost industrial and
agricultural waste, the equipment andsite requirements are not high, operation is safe, and the application effect is remarkable. The microbial compound bacterial fertilizer can be produced on a large scale in enterprises, and can be prepared at home by individuals or peasants.