What are the functions of soil microorganisms in microbial detection?

Soil is alive , This life is soil microorganisms . As we all know , Soil is the home of microorganisms , It is a natural medium for microbial growth and reproduction . The formation and development of soil by soil microorganisms 、 Material cycle 、 Fertility evolution and plant growth have a significant impact . What are the functions of soil microorganisms ？

bacteria ： Suitable for neutral and slightly alkaline living conditions . among , Autotrophic bacteria have the ability to assimilate carbon dioxide , Directly affect the physical and chemical properties of soil , Balance the pH of the soil ; Heterotrophic bacteria exist in symbiosis with crops , It can directly promote the growth of crops , Such as rhizobia of legumes , It has strong nitrogen fixing effect , Under the condition of less nitrogen fertilizer application, obvious yield increase effect will be produced .

Actinomycetes ： Suitable for neutral and slightly alkaline living conditions . Actinomycetes live in aerobic heterotrophic state in soil , Their main activity is the decomposition of cellulose in the soil 、 Lignin and pectin, etc , Through these actions to improve the soil nutrient status , It is convenient for crops to directly absorb and utilize soil nutrients .

fungus ： Suitable for slightly acidic living conditions . Participation 、 Decomposition of plant residues , Become nitrogen in soil 、 The indispensable power of the carbon cycle , Especially in the early stage of decomposition of plant organisms , Fungi are more active than bacteria and actinomycetes .

The algae ： It is a kind of unicellular organism , It mainly exists in the aquatic environment . Cyanobacteria in algae also have the function of fixing nitrogen in the air . It is more suitable to function in alkaline environment .