郑州市光肩星天牛寄主植物种类及危害现状调查

2009-2010年,对郑州市城市园林绿化常见树种中易受光肩星天牛危害的寄主植物进行全面调查,以了解郑州市光肩星天牛的分布及危害情况.调查发现,郑州市光肩星天牛分布广泛,有较为明显的空间聚集状态；市区西部、北部聚集区域光肩星天牛较东部、南部密集,虫口密度从西向东、由北往南呈递减趋势；聚集密度由大到小依次为:北部＞西部＞...

Investigation of Host Species and Damage of Anoplophora glabripennis in Zhengzhou

Urban landscape tree species in Zhengzhou vulnerably damaged by Anoplophora glabripennis were fully investigated in order to comprehensively understand the distribution and damage of A.glabripennis in 2009-2010.The results showed that A.glabripennis was distributed widely and had a significant spatial aggregation state.A.glabripennis gathered more intensively in western and northern regions than in the eastern and south regions in Zhengzhou urban areas.Population density of A.glabripennis showed a decreasing trend from west to east and from north to south in the same areas.The order of aggregation density was North>West>North Central>South Central>South>East.The seriously damaged host plant species were willow>poplar>sycamore>acer mono.Willow with diameter at 1m height more than 30cm had the highest incidence,reaching 75.24%.Sycamore with diameter at 1m height less than 20cm had the lowest incidence of 16.82%.In the areas where various host plants were distributed,different hosts had significantly different damage levels.While in the areas where a single plant species was distributed,different individuals were not damaged at the same degree.