Trichoderma hamatum biological agent for controlling soil borne disease for greenhouse vegetable cultivation

The invention relates to a biological agent, in particular to a trichoderma hamatum biological agent for controlling soil borne disease for greenhouse vegetable cultivation. The biological agent is prepared through the following steps: preparing trichoderma hamatum enlarging culture; preparing trichoderma hamatum seed fermentation liquor; preparing solid fermentation culture medium; preparing trichoderma hamatum fermentations; smashing the trichoderma hamatum fermentations obtained through the step d and wheat bran respectively before use and sieving through a sieve of 60 to 80 meshes; mixingthe raw materials obtained through the step e with bergmeal, chitosan, potassium dihydrogen phosphate and biochemical fulvic acid, stirring uniformly and mixing completely to obtain jade-green powder, and determining that the content of conidiospore is 108 per gram, thereby obtaining the product. The product provided by the invention can not only effectively control soil borne disease for greenhouse vegetable cultivation but also can improve soil, is pollution-free and nuisanceless, can activate soil, has a wide range of application, and can improve the microenvironment of soil as well as induce and improve broad spectrum resistance of crops so as to promote growing of the crops.