广州小斑螟生物学特性及其防治的研究  

Research on biological characteristics and control of Oligochroa cantonella Caradja

作　　者：刘文爱[1] 李丽凤[2] LIU Wen＇ ai, et al.(Guangxi Mangrove Research Center, Guangxi Key Lab of Mangrove Conservation and Utilization, Beihai 536000, Chin)

机构地区：[1]广西科学院广西红树林研究中心广西红树林保护与利用重点实验室,广西北海536000 [2]桂林电子科技大学海洋信息与工程学院,广西北海536000

出　　处：《中国森林病虫》2018年第2期18-21,共4页Forest Pest and Disease

基　　金：林业公益项目(201504413);广西科技厅(桂科攻1298007-2);"红树林和海草生态系统保育与生态监测"特聘专家岗位专项

摘　　要：广州小斑螟Oligochroa cantonella Caradja是红树植物白骨壤Avicennia marina最主要食叶害虫之一。通过室内饲养和野外调查相结合方式对该虫进行形态学观察和生物学特性研究。以浸叶饲喂法和喷雾法对广州小斑螟进行7种药剂室内药效试验,3种药剂林间防治试验,并对灯光诱杀进行了研究。结果表明:广州小斑螟在广西红树林1 a发生6代,以低龄幼虫在白骨壤嫩芽内越冬。室内条件下棉铃虫核型多角体病毒对低龄幼虫致死率达100%,浸叶饲喂法较喷雾法效果好,林间试验采用棉铃虫核型多角体病毒、苦参碱和氯虫苯甲酰胺3种药剂防治,死亡率分别为90%,75%,30%;林间灯诱效果较好。Oligochroa cantonella Caradja is a main defoliator of mangrove. The morphological observation and biological characteristics research of the insect were carried out through the combination of indoor feeding and field investigation. Control experiments of 7 medicaments in lab and 3 medicaments in field were accomplished with methods of leaf immersion feeding and spraying. The light trapping and killing were also studied. The results showed that it took 6 generations a year in mangroves of Guangxi,survived as young larvae hiding in the shoots of Avicennia marina. Under laboratory conditions, the lethality of Helicoverpa armigera nucleopolyhedrovirus against 3 rd instar larvae was 100%. The leaf immersion feeding method was better than spraying method in field conditions. In field experiments,we used Helicoverpa armigera nucleopolyhedrovirus,matrine and chlorantraniliprole to control the pests,with mortality rates being 90%,75%,30%, respectively. In addition,forest light trapping also had a better killing effect.

关 键 词：广州小斑螟 生物学特性 害虫防治 白骨壤 

分 类 号：S763.3[农业科学—森林保护学]