The occurrence of tobacco diseases in forecasting system of tobacco diseases and pests in Kunming was observed, including virus diseases, black Shank, brown spot, anthracnose, powdery mildew and wildfire of tobacco. Tendencies and characteristics of the occurrence of the tobacco diseases were also analyzed. The results showed that the occurrence of brown spot, anthracnose, powdery mildew and wildfire of tobacco is relatively slight in Kunming in 2011. |