摘要
2010年4月,对翠湖公园的主要行道树三角枫(Acer buergerianum Miq.)上材小蠹虫孔分布及材小蠹危害率进行了调查,提出了三角枫蠹害木蠹害等级分级标准,并计算了蠹害指数。结果表明:(1)三角枫蠹害木主干上的虫孔数随主干距地面高度的增加而增加,距地面101～150 cm和151～200 cm处主干可作为三角枫蠹害状况调查的最适区段;(2)园内材小蠹危害率高达89.5%,受害三角枫的平均虫孔数为13.1/株;(3)园内三角枫轻度、中度和重度蠹害木的比例分别为42.9%,41.4%和5.2%,蠹害指数为47.1,三角枫正遭受普遍且严重的蠹害威胁。提出了加强虫情监测、开展物理防治和化学防治的防治对策及措施。
Acer buergerianum is a major important street species in Cuihu park,wormhole distribution and damage rate were investigated in April 2010,a standard of damage level was proposed,and damage index of Xyleborus sp.was calculated.The results showed：（1） The number of wormholes increased with the increase of the height from the ground,the trunk which is 101~150 cm or 151~200 cm from the ground should be investigated as the optimal section;（2） The damage rate of Xyleborus sp.in the park was 89.5%,the average number of wormholes on the damaged Acer buergerianum was 13.1;（3） The ratios of the mildly,moderately and severely damaged trees were 42.9%,41.4% and 5.2% respectively,and the damage index was 47.1.For Acer buergerianum suffering from the widespread and serious threat of Xyleborus sp.,prevention strategies and measures to strengthen beetle monitoring and carry out physical control and chemical control were proposed.
出处
《云南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第2期294-298,共5页
Journal of Yunnan Agricultural University:Natural Science
基金
云南省森林灾害预警与控制重点实验室开放基金项目(ZK11B101)
翠湖公园管理处和云南省重点学科森林保护学项目(XKZ200905)
