Beneficial rhizosphere microorganisms will promote the growth of crops, while harmful ones will aggravate plant diseases.
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Microorganisms will obtain the maximum growth rate at the optimal growth temperature, but the microorganisms will stop growing or die when the temperature exceeds the minimum or maximum limit.
Soil organisms include: soil microorganisms, soil animals and the roots of higher plants.
SOM can promote nutrient availability and increase crop yield.
Soil humus including humin, humic acid and fulvic acid.