摘要： 将采摘的苦楝果实烘干、粉碎，以甲醇为溶剂，用超声波法提取苦楝果实的提取物，配成不同浓度的苦楝果实提取液，用于测定2种生物农药Bt₈010和Bt₇216的抑菌圈和抑菌率。结果表明：苦楝果实提取液浓度越高，其抑菌程度越大。其中，对Bt₇216的抑菌活性较大，Bt₈010次之。高浓度的苦楝提取物与生物农药（Bt）混用会降低Bt的药效。

关键词: 苦楝, 提取物, 生物农药（Bt）, 抑菌活性

Abstract: The fruits of Melia azedarach L.were dried and ground to powder,from which the extracts were obtained using methanol as solvent by means of the ultrasonic-assisted method,and then were made into different concentrations.The extracts were used to study the bacteriostatic circle and the bacteriostic percentage to two biological pesticides,Bt-8010 and Bt-7216.The result indicated that the higher the extract concentration of Melia azadarach L.was,the greater the bacteriostatic effect was.The bacteriostatic effect to Bt-7216 was higher than to Bt-8010.Mixing the Bt with high concentration of extracts of Melia azedarach L would reduce the bacteriostatic effect.

Key words: Melia azadarach L., Bacillus, Bacillus thuringiensis, Bacteriostasis activity

中图分类号: 

• Q945