Investigation of Xyleborus sp. Attacking on Acer buergerianum and Strategy of Control on the Beetle in Cuihu Park, Kunming
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.