考察了苍耳子的水提取物及乙醇提取物在抗真菌、除草、杀虫方面的作用，研究结果表明：在抗真菌实验中，苍耳子乙醇提取物终浓度为20 mg/L时选择性地对小麦颖枯菌和小麦赤霉菌有抑制作用，抑制率分别为70％和100％；在杀虫实验中，苍耳子乙醇提取物具有选择性杀虫作用，在终浓度为60μg/cm 2时对棉铃虫毒杀率达100％；在除草实验中，在终浓度为60μg/cm 2时，苍耳子水提取物选择性地对小白菜有100％的抑制作用。%In this study, the water extract and ethanol extract from Xanthium sibiricum Patrin were tested for potential antifun-gal, insecticidal and herbicidal activities .The results indicated that the ethanol extract from Xanthium sibiricum showed selective an-tifungal and insecticidal activities , and the water extract from Xanthium sibiricum showed selective herbicidal activity .At the final concentration of 20 mg/L, the ethanol extract exhibited the selective antifungal activity to Septoria nodorum and Fusarium culmorum with the inhibition rate of 70% and 100%, respectively.Moreover, the ethanol extract at the final concentration of 60 μg/cm 2 showed 100%insecticidal activity on Heliothis armigera.Finally, the water extract at the final concentration of 60μg/cm 2 possessed the unique herbicidal activity on pakchoi , and the inhibition rate reached 100%.
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