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测定了 6 3种植物茎叶或果实的乙醇提取物 (浓度 0 .0 1gDW·ml-1)对桃蚜Myzuspersicae(Sulzer)和萝卜蚜Lipaphiserysimi(Kaltenbach)的忌避作用。结果表明 ,大多数试验植物的乙醇提取物对桃蚜和萝卜蚜均有明显的忌避效果。其中 ,苍耳XanthiumsibiricumPetr.etWidd .提取物对桃蚜和萝卜蚜的忌避率分别为 0 .4 81和0 .5 5 7,产后代数比对照降低 39%和 6 3.5 % ,桃蚜、萝卜蚜的种群趋势指数仅为对照的 2 9.1%和 11.3% ;白蝴蝶Syngonium podophyllumSchott .植株提取物对桃蚜和萝卜蚜的忌避率分别为 0 .4 5 2和 0 .6 15 ,产后代数比对照降低2 4 .5 %和 6 4 .1% ,桃蚜和萝卜蚜的种群趋势指数仅为对照的 33.3%和 14 .9%。对蚜虫有较好的控制效果。
The repellent effects of ethanol extracts from leaves, stems and fruits of 63 species of plants (0.0101 gDW · ml-1) on Myzus persicae (Sulzer) and Lipaphistrysimi (Kaltenbach) were determined. The results showed that the ethanol extract of most of the tested plants had a significant evasion effect on both Myzus persicae and Myzus persicae. Among them, the Xanthium sibiricum Petr. Et Widd. Xanthium sibiricum Peel extract on Myzus persicae and radish aphid esophageal avoidance rates were respectively 0.81 and 0.55 7, the postnatal algebra 39% lower than the control and 65.5%, Myzus persicae, aphid The population trend index was only 21.9% and 11.3% of that of the control, respectively. The rejection rates of Syngonium podophyllum Schott plant to Myzus persicae and Aphis gossypii were 0.452 and 0.605, respectively, and the postpartum algebra was reduced by 2 4.5% and 6.41%, respectively. The population trend index of Myzus persicae and Aphididae were only 33.3% and 14.9% of the control. Aphids have a better control effect.