霍城县林地面积这些年增长幅度较大,但管理较粗放。特别是经济林,大部分果园杂草丛生,鼠害猖獗,致使果农大量使用鼠药,导致家畜、禽类等误食而亡,造成了不必要的损失。为安全有效地防鼠,1995年秋,惠远乡水管站1.33hm2果园首次使用了牛粪加石灰涂抹树干,取得了较好的效果。县林 Huocheng County forest area increased in these years a larger margin, but more extensive management. Especially in the economic forest, most of the orchards are overgrown with weeds and rodents are rampant. As a result, large quantities of rodent pests are used by fruit growers, resulting in the unnecessary loss of livestock and poultry. In order to prevent rodents safely and effectively, in the autumn of 1995, the orchard of Huiyuan Rural Water Management Station first used cow dung plus lime to smear the trunk and achieved good results. County forest