Abstract：Simulating factory production process of sproutsing to cultivate bean sprouts, taking spoilage sprouts samples during the process of cultivating, then separating, purifying and identification were carried out to determine the pathogen. Finalized for the pathogen Rhizoctonia solani was finalized. Observing the pathogenicity of inoculation volume of different Rhizoctonia mycelial suspensions on bean sprouts was tested. The results showed that different inoculums leaded to the differencest of disease occurring the time of incidence, the incidence rate and bean sprouts biological production. Using inoculums at 2 pieces bacteria per 5 milliliter and 2 pieces bacteria per 10 milliliter of mycelial suspensions to treat bean sprouts, the spoilage of bean sprouts was serious. The incidence rate at the 5th day were 46 %, 25 %, respectively. The results of using different treatments to protect Rhizoctonia solani showed that 40 ℃ hot-water disinfection, 1 % lime water, 1/5 000 potassium permanganate might control the occurrence of Rhizoctonia to some extent, the relative control efficiencies were 91.30 %, 54.35 %, 50.00 %, respectively.
