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大青山和蛮汉山是我区主要次生林区。根据中央和内蒙林业发展规划草案精神以及内蒙党委提出十五年实现地方用材自给的要求,大力发展针叶树种,尽快将次生林改造成为社会主义建设用材林基地,是我区林业工作中的一个光荣而艰巨的任务。解放以来,在伟大领袖毛主席和中国共产党的正确领导下,我区广大林业工作者已经在这方面作了很多工作,作出了不少成绩。但在营造针叶林的过程中,也遇到了不少问题,其中一个比较突出的障碍就是鼠类对油松的危害。鼠类啃食针叶树树皮,轻则影响幼树的生长发
Daqingshan and Haoshan is my main secondary forest area. According to the spirit of the draft of the Central and Inner Mongolia Forestry Development Plan and the requirement of Inner Mongolia Autonomous Region proposed by local party committees for 15 years to develop conifers and self-sufficiency of local timber, it is imperative and arduous to vigorously develop coniferous species and transform the secondary forest into a timber forestation for socialism as soon as possible The task. Since the liberation, under the correct leadership of Chairman Mao and the CPC, the vast number of foresters in our region have done a great deal of work in this regard and have made many achievements. However, in the process of creating coniferous forest, it also encountered many problems, one of the more prominent obstacle is the harm of rodents on pine. Rodent eating conifer bark, ranging from affecting the growth of young trees