摘要
三门江林场内桉树尺蠖危害时有发生,不断施药控制增加了培育成本,为更高效地进行防治,进行了林间调查以明确虫害种类和发生情况。结果发现:危害桉树的尺蠖主要为3种,分别为大造桥虫、油桐尺蠖和小用克尺蠖,且3者种群大小不一,大造桥虫数量占到76.16%;同一树体上随着层高降低,虫龄也逐渐增大。本着绿色、高效的防治原则对虫害进行防控,需要在监测中掌握虫情,平时注意提高营林技术措施,人工杀灭树皮内的虫卵,成虫的防治需要在其羽化期内使用灯诱和信息素诱捕,幼虫的防治需要在3~4龄之前进行喷施药剂或采用灯诱,此外,采用基因工程等新兴技术生产的抗性树种与转基因昆虫也可合理投入使用,通过采用多种防治手段相结合来实现快速降低虫口密度,保障桉树产业健康发展。
In the Sanmenjiang Forest Farm in Liuzhou,Guangxi,the caterpillar of Eucalyptus Geometridae larvae has been causing damage,and continuous use of pesticides to control it has increased the cost of cultivation.In order to improve efficiency in pest control,researchers conducted field surveys to identify the types and occurrence of pests.The investigation found that there are mainly three types of caterpillars that cause damage to eucalyptus trees:Ascotis selenaria Schiffermuller et Denis,Buzura suppressaria Guenee,and Jankowskiafuscaria Leech,with Ascotis selenaria Schiffermuller et Deni accounting for 76.16%of the population.As the tree layer decreases,the age of the caterpillars gradually increases.To control the pest in an environmentally friendly and efficient manner,it is necessary to monitor the pest situation,improve forestry techniques,manually kill the pest eggs in the bark,use light and pheromone traps for adult control during their emergence period,and spray pesticides or use light traps before the third or fourth instar for larvae control.In addition,new technologies such as genetically engineered resistant tree species and transgenic insects can also be incorporated into the control measures.By combining multiple methods of control,rapid reduction in pest density can be achieved to ensure the healthy development of the Eucalyptus industry.
作者
温黄菊
Wen Huangju(Guangxi State-Owned Sanmenjiang Forest Farm,Liuzhou,Guangxi 545006,China)
出处
《绿色科技》
2023年第9期168-173,共6页
Journal of Green Science and Technology
关键词
桉树
尺蠖
幼虫
防治
Eucalyptus
Geometridae
larva
prevention and treatment
作者简介
温黄菊(1976-),女,在职在读硕士研究生,工程师,主要从事营林技术管理工作。
