摘要
小圆胸小蠹（Euwallacea fornicatus）是一种具有经济重要性的蛀干害虫, 多年来一直为害昆明市行道树三角枫（Acer buergerianum）和悬铃木（Platanus acerifolia）, 近年来为害加剧, 导致寄主树大枝枯死甚至全株死亡。为揭示小圆胸小蠹为害特点及虫情发展状况, 本文调查了距地面不同高度寄主植物主干虫孔分布状况, 以及近3年来小圆胸小蠹为害状况的动态变化。结果显示, 距地面50~100、100~150、150~200 cm主干虫孔百分率的平均值分别为10.81%、37.01%、47.76%, 小圆胸小蠹更多侵入三角枫主干距地面100~200 cm部位进行筑坑; 3年来小圆胸小蠹的为害率增加了7.5%, 为害指数增加了6.3。制定了小圆胸小蠹的防治对策及防治月历。提出了加强对距地面100~200 cm主干的监测, 在进行冬季树干涂白时, 将涂刷高度增加到距地面2 m的建议。指出了今后虫情监测和控制的方向, 即大力开展小圆胸小蠹引诱剂研究。
Euwallacea fornicatus （Eichhoff） （Coleoptera.. Scolytidae） is a serious pest of Acer buergerianum and Platanus acerifolia in Kunming, Yunnan Province. In recent years, it has caused great injury to the hosts, and many branches even trees die of it. In order to reveal its injury and occurrence, we investigated distribution of the holes bit by the borer on different stem of the host and injury dynamics during recent years. The results showed that the average percentage of the holes on the stem at 50 - 100 cm, 100 - 150 cm, and 150 - 200 cm above ground were 10.81%, 37.01% and 47.76%, respectively. The stems at 100- 200 cm above ground were mostly attacked by the borer. In recent 3 years, the damage ratio increased by 7.5% and the damage index increased by 6.3. The pest management strategies and control calendar were also put forward in this paper. It suggests that pest monito- ring should be done on the stem at 100 - 200 cm above ground, and the painting height should be changed to 2 m when lime water are painted on the stem during the winter. And developing attractant for the borer should play an important role in the pest monitoring and controlling.
出处
《植物保护》
CAS
CSCD
北大核心
2015年第3期193-196,209,共5页
Plant Protection
基金
云南省重点学科森林保护学(XKZ200905)
翠湖公园管理处联合资助
关键词
小圆胸小蠹
危害率
危害指数
防治对策
害虫监测
Euwallacea fornicatus
damage ratio
damage index
pest management strategies
pest monitoring
