树木溃疡病是一类危害严重的枝干病害，病原种类多，寄主范围广，症状复杂。
Tree canker is a kind of most serious tree trunk disease which have a various of pathogens, a wide distribution of host and complex symptoms.
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.
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.
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