公路路缘石和行道树的灰水喷白是高等级道路养护工程的主要作业内容之一。
Cement water spraying of highway curb and roadside tree is very important in high grade road maintenance engineering.
是采取诱杀措施的重要时期；诱饵树的设置应以通风向阳的林道旁或郁闭度较小林分的林窗中为宜，距寄主植物有一定距离的林缘更佳。
Setting up alluring tree should be on sides of ventilative and sunny forest road or in forest windows with a less crown density.
是采取诱杀措施的重要时期；诱饵树的设置应以通风向阳的林道旁或郁闭度较小林分的林窗中为宜，距寄主植物有一定距离的林缘更佳。
Setting up alluring tree should be on sides of ventilative and sunny forest road or in forest windows with a less crown density.
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