红松,是我省的主要造林树种之一,近几年时有落叶病的发生。红松落叶病在白石山林区5月上旬显露病状,初由基部变色,形成班点或段班,后延伸至整个针叶,变为淡黄色,并逐渐变为黄褐色至红褐色,远望火烧似的,然后针叶开始脱落。往年较轻,今年突发严重,发病率和成病指数均超过历 Korean pine, is one of the main afforestation species in our province, the occurrence of deciduous diseases in recent years. Kochia scoparia in Baishishan forest in early May revealed symptoms, beginning from the base discoloration, the formation of classes or section classes, after the extension of the entire conifer, into a light yellow, and gradually turned to brown to reddish brown, Yuanwang Fire-like, then the needles began to fall off. In previous years, the severity of serious emergencies this year, morbidity and disease index exceeded the calendar