薇甘菊对桔小实蝇的驱避试验初报

为了探索一种低毒、低残留的环保型驱避剂，分别在广州市番禺区杨桃园和广东省昆虫研究所大院内，以薇甘菊Mikania micrantha H．B．K对桔小实蝇Bactrocera dorsalis（Hendel）成虫进行驱避试验。结果表明，薇甘菊对桔小实蝇具有明显的驱避效果，在薇甘菊环境内诱杀桔小实蝇虫数明显低于正常环境诱杀虫数，全年1，12月薇甘菊环境内对桔小实蝇的驱避率为13．33-92．78％，全年平均驱避率为50．65％；杨桃园内，以薇甘菊甲醇提取物喷施的杨桃，可以把本地种杨桃的桔小实蝇为害率控制在50％以下，而对照的为害率超过80％。

REPELLENCY OF MIKANIA MICRANTHA AGAINST BACTROCERA DORSALIS

The results showed that the methyleugenol attract effected on oriental fruit fly in the Mikania micrantha H. B. K. cultural environment were significant lower than in normal environment. Inside the Mikania mlcrantha Kunth environment, the attract number of oriental fruit fly were decline by 13. 33 - 92. 78%, and 50. 65% average in whole year. Further study showed that the methonal extract of Mikania micrantha had significant repellent effect on oriental fruit fly in field. After local Averrhoa carambola was treated with extract of M. micrantha, the fruit damage rate was below 50%, when the damage rate of CK was over 80%.