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研究了不同浓度(10%、5%、2.5%和1.7%)的火炬树(Rhus typhina)根和凋落叶水浸提液对小麦种子萌发的化感作用。结果表明:2种器官水浸提液对小麦种子萌发均具有强烈的化感抑制作用,表现为萌发率、萌发指数、幼苗活力指数的降低和萌发进程的延迟(萌发速率系数增大),而且具有明显的浓度作用;火炬树凋落叶水浸提液对小麦种子萌发的化感作用强于根的化感作用;火炬树根和凋落叶水浸提液对小麦种子萌发指数的化感作用最强,对幼苗活力指数的化感作用次之,对萌发速率系数的化感作用最弱。
The allelopathic effects of Rhus typhina roots and litter extracts on the germination of wheat seeds were studied at different concentrations (10%, 5%, 2.5% and 1.7%). The results showed that water extracts of two organs had strong allelopathic effects on the germination of wheat seeds. The results showed that germination rate, germination index, seedling vigor index and the delay of germination process (germination rate coefficient increased) The allelopathic effect of Rhus typhina leaf litter water extract on wheat seed germination was stronger than that of root; the allelopathic effect of Rhus typhina on the seed germination index of wheat The allelopathic effect on seedling vigor index was second, and the allelopathic effect on the germination rate coefficient was the weakest.