Risk Analysis and Exploration of Poplar Leaf Rust in Beam Tube Protection Center
Through in-depth research,we concluded that the leaf rust of poplar poplar occurred frequently from late July to early Sep-tember due to the change of cutting density,landform,rainfall and management level,and the most important source of infection is summer spores.Therefore,take effective measures,can effectively reduce the occurrence of the disease,so as to improve the quality of seedlings.By reducing plant density during seedling development and taking appropriate chemoprophylaxis early in the disease,the ex-tent of plant damage and patient suffering can be greatly reduced.Among the various drugs used,the prevention effect of 29%stone sulfur mixture 1000 times liquid was the best.The incidence of prevention effect and the pain index of the patients were both 5%,which was lower than the pain index Ⅲ and Ⅳ of the patients who did not use this medicine(CK).The difference was very obvious.
万方数据
维普
