Content
Merchants will add a certain amount of bacteria agents in the production of biofertilizer. However, there are some requirements for bacterial adding in biofertilizer production technology. You need to conduct harmless treatment of raw materials first and select excellent strains. At the same time to separate functional bacteria and fermentation bacteria, choose suitable functional bacteria dosage forms. Also pay attention to the temperature and time in the drying.
harmless treatment of raw materials
The raw materials of bio organic fertilizer production are mainly livestock manure, crop straw, industrial waste, domestic waste, urban sludge, plant litter and other waste. They contain a large number of toxic and harmful substances and pathogenic bacteria. In order to prevent the application of manufactured products into the food chain, critical food safety or environmental pollution, raw materials must be harmless treatment before they can be used as biological organic fertilizer substrate raw materials. Under normal circumstances, fermented compost is one of the most common ways of harmless treatment of microbial fertilizer raw materials.
Selection of excellent strains
The quality of bio organic fertilizer mainly depends on the number of viable bacteria and the function of beneficial microorganisms in the fertilizer.
Optional with high temperature resistance, salt resistance, low oxygen resistance, drought resistance, acid resistance, alkali resistance and other characteristics. At the same time, it has the functions of nutrition promotion, maturation and transformation, degradation and repair, fertilizer and soil improvement, and to ensure the effective number of viable bacteria of the product. This is the heart of bacterial adding in biofertilizer production technology.
Besides, in the addition of biological bacteria, it is necessary to carefully select the appropriate strain combination. Avoid adding incompatible or competitive strains together to ensure the effect and stability of the addition of biological bacteria.
Separate delivery of functional bacteria and fermentation bacteria:
Functional bacteria are generally not resistant to high temperatures. It is difficult to grow and reproduce at high temperatures above 60℃. However, in the high temperature stage of organic material maturation and fermentation, it will produce a high temperature of more than 60℃ for 5-7 days. If the functional bacteria and fermentation bacteria are mixed for fermentation, most of the functional bacteria will die due to continuous high temperature.
This will affect the effective viable bacteria number of the product and reduce the biological fertilizer efficiency. Therefore, in actual production, you need to put functional bacteria and fermentation bacteria separately. That is, organic materials first add putrefactive agent to promote putrefactive fermentation, and then add functional bacteria after putrefactive. The addition process of functional bacteria has a variety of situations, you can choose according to your needs.
Select the appropriate functional dosage form
The difference of functional bacteria has great influence on its function. In order to ensure the effective number of viable bacteria in the microbial fertilizer, you should choose the appropriate dosage form of bacteria. This is conducive to extending the shelf life of the product. At the same time, it is one of the key measures of biofertilizer production technology. If you want to can directly use of the biological fertilizer production, you can choose the powdery bacterium agent. They can be directly after mixing fertilizer.
Drying process
In the process of granulation drying, in order to reduce the mortality of functional microorganisms, the drying temperature should not be too high. In addition, the drying time should not be too long. Generally, the appropriate drying temperature is 85-90℃. Suitable drying time is 15-20 minutes.
