Bacterial fertilizer is the common name for microbial fertilizer, which is an auxiliary fertilizer with living organisms.
There are a large number of microorganisms (including bacteria, fungi and actinomycetes) in the soil, generally containing several hundred million to several billion microorganisms per gram of soil.
Some are beneficial to crop growth and development, while others are harmful.
People use scientific methods to isolate and select beneficial microorganisms from the soil, after cultivation, propagation, made of bacteriological agents, these bacteriological agents are applied to agriculture to increase crop yields, called bacterial fertilizer, also called microbial fertilizer.
At present, the main bacterial fertilizers produced and applied in China are rhizobia, nitrogen-fixing bacteria, phosphorus bacteria, potassium bacteria, antibiotic fertilizers and so on.
Bacterial fertilizer is through the life activity of beneficial microorganisms, antagonize harmful microorganisms, promote the conversion of nutrients in the soil, increase the effectiveness of soil nutrients, improve the nutritional conditions of crops and increase soil fertility.
The application of bacterial fertilizer includes foliar spray of bacterial solution, seed spray of bacterial solution, seed mix and solid bacterial agent mixed with seeds as bacterial fertilizer, etc.