采用水、乙醇、氯仿、乙酸乙酯及乙醚5种不同极性的溶剂，利用超声波辅助提取法从核桃青皮中提取有效成分，继而研究其对烟青虫的毒杀和拒食活性。结果表明：5种提取物均对烟青虫具有毒杀作用，且呈现良好的剂量效应关系，不同提取物、不同浓度都会影响烟青虫的毒杀活性和拒食活性。5种提取物对烟青虫的杀虫活性顺序依次为乙酸乙酯提取物跃氯仿提取物跃乙醚提取物跃乙醇提取物跃水提取物。由此可见，核桃青皮不同溶剂提取物对烟青虫具有一定的毒杀作用，具有开发成生物农药的潜力。%Using water,ethanol,chloroform,ethyl acetate and ethyl ether five different polar solvents,effective components from walnut peel were extracted by ultrasonic extraction,and then the tobacco budworm poison and antifeedant activity were studied.The results showed that five kinds of extracts had toxic effect on tobacco budworm,and showed a good dose-response relationship,different extracts of different concentrations would affect the tobacco budworm toxicity and antifeedant activity.The order of insecticidal activity of five kinds of extracts to the tobacco budworm was ethyl acetate extract>chloroform extract> ethyl ether extract> ethanol extract.Thus,different solvent extracts from walnut green husk has certain toxic effect on tobacco budworm,has potentiality in biological pesticide development.
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