【摘要】 林下植被抚育是桉树人工林经营中的关键环节。采用调查问卷的方式，在广西区直林场开展桉树林下植被抚育现状的调查，对林下草灌保留、除草方式、除草剂使用等情况进行汇总分析。结果显示，各林场通常采取人工和除草剂两种方式相结合进行桉树林下植被抚育；第一年抚育1～3次，第二年至第四年抚育0～1次，采伐前抚育1次；林下植被抚育时草灌保留高度在10～20 cm以下，部分林场林下灌木保留10%～30%;抚育成本675～1 275元/hm~2;使用的除草剂主要是草甘膦、草舒、草乙疏等，均含有草甘膦成分，施用量为7.5～18.75 kg/hm~2。采取多样化的桉树林下植被抚育方式，以平衡桉树生长和林下植被多样性的关系，促进桉树人工林可持续经营。更多还原

【Abstract】 Understory vegetation tending is the key technology in Eucalyptus plantation management. A questionnaire survey was carried out in the Guangxi state-owned forest farms to investigate the present situation of understory vegetation management of Eucalyptus plantation. By analyzing the situation of understory vegetation preservation, weeding control methods and herbicide application, the present situation was comprehensively understood and the existing problems were analyzed. The results showed that the understory vegetation tending of Eucalyptus plantation in Guangxi was usually carried out by the combination of artificial weeding and herbicide; the foster frequency was 1-3 times in the first year, and 0-1 times in the 2-4 years of afforestation, 1 time before timber harvesting; the reserve height of underground vegetation was less than 10-20 cm, and 10%-30% of understory shrubs were preserved in some forest farms; the cost of understory vegetation tending was 675-1 275 yuan/hm~2; the main herbicides included Glyphosate, Caoshu and Caoyishu, all of which contained glyphosate, with spraying herbicide 7.5-18.75 kg/hm~2. This paper suggested to develop diversified tending measures of understory vegetation to balance the relationship between tree growth and understory vegetation diversity, and promote sustainable management of Eucalyptus plantation.更多还原