文摘
The allelochemicals of Glycyrrhiza uralensis and their allelopathic effects were evaluated. The extracts exhibited phytotoxicity on Lactuca sativa and autotoxicity on tabacco. Liquiritin, isoliquiritigeninand glycyrrhizic acid were the major allelochemicals. Three allelochemicals showed observably phytotoxicity and autotoxicity. Their concentrations in dry in soils were 2.32, 0.09 and 12.5 μg/g, respectively.