摘要
结合林业生产实践，调查认为落叶松叶蜂在固原市具有广泛发生，危害集中且危害期短而严重；林分郁闭度在0．5～0．6时，危害程度最重；并且坡向不同，树种不同，危害程度也不同的发生特点。并在此基础上，分析了当前落叶松叶蜂的发生原因，提出要加强综合性营林措施，提高森林生态系统的调控能力，积极倡导实施多种防治技术措施，加强虫情监测及预测预报工作，并要加大检疫工作力度的综合治理措施。
Investigation shows that Pristiphora erichsonii Hartig in Guyuan is widely distributed and does massive damage only in short period. The damage becomes most serious when the canopy density of the stand is in the range of 0. 5 to 0.6 and varies with slope directions and different trees as well. Based on this investigation, the causes for occurrence of Pristiphora erichsonii Hartig are analyzed. For the purpose of control and prevention, provided are some suggestions such as strengthening com- prehensive forest management for enhance the adjustments of forest ecosystem, applying multiple preventive technical measurements as well as reinforcing monitoring, forecasting and quarantining measurements.
出处
《陕西林业科技》
2007年第3期76-80,共5页
Shaanxi Forest Science and Technology
关键词
落叶松叶蜂
发生特点
综合治理
Pristiphora erichsonii Hartig
Occurrence characteristic
comprehensive control
