Trichoderma spp. belongs to the genus Trichoderma, class Sordariomycetes, order Hypocreales, family Hypocreaceae, phylum Ascomycota. Trichoderma is not only found in large quantities in the soil tillage layer, but is also widely distributed on plant surfaces, dead branches and leaves, and various fermented products.
For example, it can be found in the forest humus layer and farmland orchard soil, and is also found in large quantities in ecological environments such as plant rhizosphere, leaf sphere, seeds, and bulbs. Since Weindling first demonstrated in 1932 that Trichoderma lignorum has antagonistic effects on a variety of pathogenic fungi such as Rhizoctonia solani, a variety of extracellular enzymes and antibiotics produced by Trichoderma have been isolated and identified, and its antibacterial effects have also been further studied.
Common species include T.harzianum, T.asperellumn, T.viride, T.koningii, T.atroviride, T.hamatum and T.longibranchiatum. Currently, the most widely used in agricultural production are T.harzianum, T.viride, T.asperellumn and T.longibranchiatum.
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