黔北的地形特殊，以山区为主，没有成片成片的大面积林区，这不利于森林病虫害防治工作的开展。
Special topography of northern Guizhou were large mountainous areas without large area forest region, this went against developing control work of forest pests.
本文从一年养护管理工作的划分、浇水、施肥、整形修剪、病虫害防治、中耕除草、防寒等多方面进行了论述。
This article discussed the division of conservation management, watering, fertilizing, pruning, pest control, cultivation, weed, anti-cold and other aspects.
用于林木病虫害防治的便携式脉冲烟雾机，其燃烧室喷管为主要工作部件。
A portable pulse fogger is mainly used in forestry disease and insect control. The combustion chamber and its tailpipe are main parts of the fogger.
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