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Ash trees can resist many dieases,but they can not resist the emerald ash borer.It lays eggs on the bark,then the young larva drill into and feed on the inner bark.This harms the ability of the tree to transport water and nutrients.The insect is attacking |
中文意思: 灰树可以抵御很多疾病,但是它们不能抵御灰虫.灰虫在树皮上孵蛋,那么幼虫钻入树皮并以内部树皮为食.这个破坏了树木传输水和营养的能力.昆虫正在攻击树木的耕种,并且当圆木和柴火运输的时候它们就能传播. |
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