【摘要】 通过对免耕玉米田的杂草种子进行室内培养研究,初步探讨了苜蓿根浸提液和根际土浸提液对杂草萌发和生长的化感作用。结果表明:苜蓿根浸提液和根际土浸提液能够显著抑制萝摩和山莴苣的萌发;苜蓿根际土的乙醇浸提液能够显著抑制萝摩、无芒稗和山莴苣幼苗的生长。研究结果为在免耕玉米田引入外源绿肥植物控制杂草提供了依据。表3,参15。更多还原

【Abstract】 The allelopathy of root and rhizospheric soil extracts of alfalfa on weed germination and seedling growth was preliminarily studied by incubation experiments of weeds in a no-till corn field.Results showed that the root and rhizospheric soil extracts of alfalfa inhibited germination of Metaplexis japonica T.and Lactuca indica L.; and ethanol extracts of rhizospheric soil of alfalfa exhibited the inhibition on seedling length of Metaplexis japonica T.,Echinochioa crusgalli L.and Lactuca indica L.This study could provide scientific bases for controlling weeds in no-till corn field applied by exotic green manure plants.更多还原