球孢白僵菌防治三线茶蚕蛾初步试验  

Preliminary study on the control effectiveness of Beauveria bassiana against Andraca bipunctata

作　　者：林华英 LIN Huaying(Shanghang County Natural Resources Bureau,Shanghang,Fujian 364200,China)

机构地区：[1]上杭县自然资源局,福建上杭364200

出　　处：《武夷科学》2024年第2期132-135,共4页Wuyi Science Journal

基　　金：中央财政林业科技推广示范项目(闽【2020】TG11号)。

摘　　要：三线茶蚕蛾(Andraca bipunctata)是油茶的主要食叶害虫之一,在福建省广泛分布。本研究在上杭县油茶林开展了利用球孢白僵菌(Beauveria bassiana)孢子悬浮液及粉剂防治三线茶蚕蛾幼虫试验。结果表明,用浓度为1.0×10^(5)、1.0×10^(6)、1.0×10^(7)、1.0×10^(8)、1.0×109孢子·mL^(-1)的悬浮液喷雾防治,幼虫死亡率随时间延长而增高;喷菌液9 d后,1.0×10^(7)、1.0×10^(8)、1.0×109孢子·mL^(-1)浓度处理的幼虫死亡率分别为81.6%、84.6%和85.9%,校正死亡率分别为79.9%、83.1%和84.5%。用粉剂7.5 kg·hm^(-2)进行防治,施菌9 d后,幼虫平均死亡率为73.7%。研究结果可为球孢白僵菌防治三线茶蚕蛾幼虫提供参考。Andraca bipunctata is one of the main leaf-eating pests of Camellia oleifera,and it is widely distributed in Fujian Province,China.In this study,biocontrol experiments were conducted against A.bipunctata larvae using a spore suspension and powder of Beauveria bassiana in a C.oleifera forest of Shanghang County.The results showed that the mortality rate of the larvae increased over time when the pests were treated with a concentration series of 1.0×10^(5),1.0×10^(6),1.0×10^(7),1.0×10^(8),and 1.0×109 fungal conidia·mL^(-1).After 9 days of spraying the spore suspension,mortality rates of the larvae at concentrations of 1.0×10^(7),1.0×10^(8),and 1.0×109 conidia·mL^(-1) were 81.6%,84.6%,and 85.9%,respectively;the corrected mortality rates were 79.9%,83.1%,and 84.5%,respectively.The average mortality rate of the larvae was 73.7%after 9 days of treatment with the powder of B.bassiana conidia at 7.5 kg·hm^(-2).These findings provide a scientific reference for the control of A.bipunctata larvae by B.bassiana.

关 键 词：三线茶蚕蛾 球孢白僵菌 生物防治 防治效果 油茶 

分 类 号：S763.42[农业科学—森林保护学]