【摘要】 研究了紫茎泽兰地上部分、根系及根际土壤不同浓度提取液对白三叶和多花黑麦草发芽的影响。研究结果表明:紫茎泽兰对白三叶和黑麦草种子萌芽存在化感克异现象,并且随浓度的增加,影响越大;相同条件下,对白三叶的影响强于多花黑麦草;低浓度对白三叶败育的影响较大,但对多花黑麦草几乎没有影响;紫茎泽兰根际土壤对两种牧草种子萌芽无明显的化感克异作用。更多还原

【Abstract】 Allelopathic effects about the extraction of different concentration from overground part,root and rhixosphere soil of crofton weed (Eupatorium adenophorum spreng) on germination of white clover(Trifolium repens L.) and Italy ryegrass(Lolium multiflorum L.) were studied.The results showed that extraction from crofton weed had allelopathic effects on germination of both white clover and Italy ryegrass,and the effects enhanced with the increasing of the concentration.Allelopathic effect on white clover was stronger than Italy ryegrass in the same condition.More abortive seedling of white clover appeared under low concentration,but little changed on Italy ryegrass.Extraction from rhixosphere soil was almost no allelopathic effects on germination of these two pastures.更多还原