作　　者： ; ; ; ; ;

机构地区： 华南农业大学资源环境学院农药与化学生物学教育部重点实验室

出　　处： 《华中农业大学学报》 2011年第2期 200-205,共6页

摘　　要： 在温度为20-25℃、湿度为50%-60%的室内条件下,采用水培法,以叶片死亡率、全株死亡率为指标,测定了29种植物甲醇提取物的除草活性。结果表明：供试植物中有10种植物甲醇提取物对大薸的活性显著,它们分别是虎刺楤木、阔叶十大功劳、木槿、黄连、盐肤木、白花曼陀罗、油桐、大头续断、野花椒和雷公藤,其中虎刺楤木甲醇提取物在质量浓度为0.625 mg/mL时,引起大薸叶片死亡率达84.56%、全株死亡率达80.64%;提取物在质量浓度为0.313 mg/mL时,对大薸的根和叶也还有明显抑制、致死的效果,叶片死亡率为55.65%,全株死亡率为38.97%。 Herbicidal activities of 29 plant extracts were tested against Pistia stratiotes L.in laboratory by water culture method at 20-25 ℃ and RH 50%-60%.Results showed that 10 of them had obvious herbicidal activities by the indicators of leaf mortality and whole plant mortality and with reference to root response.They were Aralia armata（Wall.） Seem.,Mahonia bealei（Fort.） Carr.,Hibiscus syriacus L.,Coptis chinensis Franch,Rhus javanica Mill.,Datura metel L.,Aleurites fordii Hemsl.,Dipsacus chinensis Batal,Zanthoxylum simulans Hance and Tripterygium wilfordii Hook.f..Among these 10 plants,Aralia armata（Wall.） Seem.was the best one.When its methanol extracts reached the concentration of 0.625 mg/mL,the corrected leaf mortality of Pistia stratiotes L.was 84.56% and the corrected whole plant mortality was 80.64%.Even at the low concentration of 0.313 mg/mL,the corrected leaf mortality of Pistia stratiotes L.was as high as 55.65% and the corrected whole plant mortality was 38.97%.

关 键 词： 植物提取物 除草活性 大薸

分 类 号： [S482.39]

领　　域： [农业科学] [农业科学]