一、分布和危害树种松针红斑病是世界性的松树叶部病害之一,主要侵染苗木、幼树的针叶,影响树木生长,严重时可使整株死亡。据报道该病害发生在美国、加拿大、新西兰、智利、英国、肯尼亚、坦桑尼亚、乌 First, the distribution and endangering species Pine needles is one of the diseases of the world’s pine leaf disease, mainly infected seedlings, saplings of young trees, affecting the growth of trees, the whole plant died in serious cases. It is reported that the disease occurred in the United States, Canada, New Zealand, Chile, Britain, Kenya, Tanzania, Ukraine