埃塞俄比亚南部Chencha高地苹果白粉病 (Podosphaera leucotricha)和炭疽病 (Neofabraea malicorticis)流行与环境和农艺实践的关联研究 《Phytopathology Research》：Association of apple powdery mildew (Podosphaera leucotricha) and anthracnose ...