The effect of two mathematical models on Southern rice black-streaked dwarf virus was studied to provide references for the prediction of the disease. Based on the original data of incidence of late Southern rice black-streaked dwarf virus in Huazhou City, Guangdong Province, polynomial regression method and grey system GM(1,1) prediction method were applied to building the prediction model of southern rice black-streaked dwarf virus incidence rate and to analyzing the prediction results. The results showed...