三亚市椰心叶甲寄生蜂的防效调查  

The Control Efficiency of Parasitoids on Brontispa longissima(Gestro)in Sanya City

作　　者：李朝绪[1] 黄山春[1] 覃伟权[1] 马子龙[1] 容焕 彭正强[3] 

机构地区：[1]中国热带农业科学院椰子研究所、海南省热带油料作物生物学重点实验室,海南文昌571339 [2]三亚市森林病虫害防治检疫站,海南三亚572000 [3]中国热带农业科学院环境与植物保护研究所,海南儋州571737

出　　处：《热带作物学报》2012年第7期1288-1292,共5页Chinese Journal of Tropical Crops

基　　金：公益性行业(农业)科研专项(No.200903026);国家科技支撑计划(No.2007BAD48B06);海南省自然科学基金(No.808180;310103)

摘　　要：先后2次对海南三亚市椰心叶甲放蜂点进行寄生蜂防治效果调查,从放蜂点分布、椰树危害程度、虫口密度和寄生蜂寄生率等4个方面评价椰心叶甲啮小蜂和椰甲截脉姬小蜂对椰心叶甲的防控效果。结果表明:三亚的椰树危害程度在逐渐减轻,轻度危害的椰树已占调查点的60%,虫口密度已明显下降。从两种寄生蜂的分布情况来看,椰心叶甲啮小蜂在三亚的分布范围在扩大,已经分布在每个调查点,椰甲截脉姬小蜂的分布范围则略有缩小。两种寄生蜂的寄生率比较来看,椰心叶甲啮小蜂较2007年高,而椰甲截脉姬小蜂在三亚的寄生率较2007年差。说明了两种寄生蜂均可以在三亚寄生生存,椰心叶甲啮小蜂在三亚的生存能力更强,对椰心叶甲的防控效果比椰甲截脉姬小蜂好。本研究对如何利用寄生蜂来控制椰心叶甲,具有重要的参考意义。The control effect of the parasitoid of coconut leaf beetle, Brontizpa longissima（Gestro） in the releasing sites in Sanya was investigated two times to evaluate the controlling efficiency of Tetrastichus brontispae Ferribre and Asecodes hispinarum based on releasing sites, the injury degree of coconut palm, the density of coconut leaf beetle and the parasiting rate of the two parasitoids. The results showed that the injury degree of coconut palm was gradually reduced in Sanya, the coconut palms in 60% of the releasing sites were in light injury, and the beetle density was remarkably reduced. The result also showed Tetrastichus brontispae Ferriere was distributed more widely than it in 2007, its parasitoids could be found in all sites. And the distributed area of Asecodes hispinarum was reduced. The parasiting rate of Tetrastichus brontispae Ferriere for the first investigation was higher than it in 2007 while that for Asecodes hispinarum for the first investigation was lower than it in 2007. Its showed that the two parasitoids could survive in Sanya, the survival ability and control efficiency of Tetrastichus brontispae F. were better than that of Asecodes hispinarum. The study has an important value in using parasitoids for controlling the coconut leaf beetle.

关 键 词：椰心叶甲 寄生蜂 控制能力 

分 类 号：S433.5[农业科学—农业昆虫与害虫防治]