本文报道了在我国新发现的一种病害，云杉叶疫病。
The needle blight disease of spruce, which is new to china, is described in this paper.
南美叶疫病菌与跨越大西洋的马铃薯枯萎病非常类似，总有一天它会跨越太平洋，其后果也会和预测的一样是灾难性的。
Much as the potato blight crossed the Atlantic, M. ulei will surely make its way across the Pacific one day, with consequences as disastrous as they are predictable.
桑细菌性疫病是危害桑树幼枝、叶的一种主要病害，在我国蚕区普遍发生且危害较严重。
Mulberry bacterial disease is the major and serious disease that does harm to the twigs and leaves of mulberry, and is widespread in sericultural areas.
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