Abstract:

The allelopathy of several Lolium multifolorum and Medicago sativa L was studied in the paper, and the acceptor was Sardi 7 seed. The results indicated that the aqueous extracts from roots, stems and leaves restrained the seed germination of Sardi 7; The aqueous extracts of Lolium multifolorum Barextra and Barmega have allelopathy on the seeding height、 root length and biomass of Sardi 7，and there was inhibition effect at higher concentration and there was the enhancement effect at lower concentration; The allelopathy of the different tissue is not the same; The extracts from stems of Medicago sativa L with the three different contentration have increased effection on the root length of Sardi 7， but restained on the seeding height.