花园树木中患溃疡病最多的是苹果树和梨树。
In gardens, cankers are most prominent on apples and pear trees.
杨树溃疡病主要由真菌侵染所致，该真菌是一类世界性分布的真菌，寄主范围十分广泛，可危害多种林木和果树的树干及果实，引起枯枝、溃疡、流胶和果腐等。
Poplar canker is mostly caused by fungi. These kind of fungi distributes world wide, parasites wide-ranging hosts, and harms the branches and fruits of many kinds of forest and fruit trees.
应用推荐