摘要
危害北部湾白骨壤的主要害虫是广州小斑螟 (Oligochroacantonella)幼虫、双纹白草螟 (Pseudcatharylladuplicella)幼虫和广翅蜡蝉 (Euricaniasp.)成虫。广州小斑螟喜食害白骨壤叶片 ,造成大量叶片的枯干和枝条的死亡 ,最高可导致林木 73 %的叶面积危害。室内培养发现广大腿小蜂 (Brachymeriasp .)、啮小蜂 (Tetrastichussp .)可寄生广州小斑螟的蛹 ,终止其羽化过程。虫害具有突发性、专一性、快速扩展的特点。海水淹没可明显抑制虫害。讨论了虫害的发源、爆发的原因、生态效应和防治途径 。
Research result indicated that the thematic pests were Oligochroa cantonella larva with addition of a few larva of Pseudcatharylla duplicella and adults of Euricania sp. The insect of O.cantonella prefers leaves, resulting in dry of leaf and death of twig,leading to maximum damage of 73% forest leaf area. Laboratory incubation revealed Brachymeria sp.and Tetrastichus sp. may parasitize the pupae of O.cantonella,and terminate its process of eclosion. Inundation of sea water on stands can restrain pest infestation obviously. Moreover,the origin of pest,cause of burst,ecological effect,prevention and cure approach were discussed to offer suggestions for further studies.
出处
《广西植物》
CAS
CSCD
北大核心
2004年第6期558-562,共5页
Guihaia
基金
广西自然科学基金项目
全球环境基金资助 (UNEP/GEF)。
