植物源农药对橘小实蝇的毒杀及引诱作用研究

在室内条件下采用药膜法,分别测定了3种植物源生物杀虫剂对橘小实蝇成虫的毒力。其中GF-120（0.02%多杀霉素RB）对成虫的毒性最强,LC50值为0.23mg·kg^-1,其次为0.3%印楝素EC,毒性最小的为0.36%苦参碱EC。采用非选择性试验测定了橘小实蝇成虫对8种植物精油的趋性,结果表明,天竺葵和薄荷对橘小实蝇成虫的诱集效果最好,引诱率可达36%以上,与甲基丁香酚处理比较无显著差异,并且对雌雄虫都有效,其次为洋甘菊、鼠尾草和丁香,甜橙、罗勒和柠檬的诱集效果较差。

Toxicity and Attraction of Botanical Pesticides to the Oriental Fruit Fly, Bactrocera Dorsalis Hendel

Toxicities of three insecticides to the adults of oriental fruit flies, Bactrocera Dorsalis Hendel, were evaluated by vial residue in the laboratory. The results showed that GF-120 （spinosad） had the highest toxicity LCso 0.23mg·kg^-1, azadirachtin and matrine were the next. The attraction of 8 plant essential oils to the oriental fruit flies was assessed by non - selective experiment. The results indicated that the attractive effects of fish geranium oil and corn mint oil were the best for female and male adults, which attraction rate reached 36%, and there was no significant difference in comparison with methyl eugenol. The attractive effects of the flores ehamomillae oil, the salvia oil and the clove oil were 33.34%, 30. 00% and 26. 67% respectively. The attractive effects of sweet orange oil, the sweet basil oil and the lemon oil were not good for oriental fruit flies.