中文摘要：

用草原3号杂花苜蓿（Medicago varia Martin.cv.CaoYuanNo.3）在直播和催芽条件下对受体牧草缘毛雀麦（Bromus ciliatus L.）、新麦草（Psathyrostachys juncea）、蒙古冰草（Agropyron mongolicum Keng.）的化感效应进行研究,结果表明,草原3号杂花苜蓿不同发芽条件下对3种牧草存在化感效应。直播条件下对3种牧草的化感效应大小顺序为新麦草〉缘毛雀麦〉蒙古冰草,催芽条件下对3种牧草的化感效应大小顺序为缘毛雀麦〉新麦草〉蒙古冰草;草原3号杂花苜蓿发芽期和发芽后生长期对3种牧草的化感效应有一定差异。

英文摘要：

Study allelopathy of receiver plant Bromus ciliatus L.,Psathyrostachys juncea and Agropyron mongolicum Keng with Medicago varia Martin.cv.CaoYuanNo.3.in direct seeding and germination conditions.The results show that,Medicago varia Martin.cv.CaoYuan No.3 the existence of three kinds of forage allelopathy in different conditions.The order of allelopathy of 3 pasture is that Psathyrostachys juncea〉Bromus ciliatus L.〉Agropyron mongolicum Keng in a living condition,The order of allelopathy of 3 pasture is that Bromus ciliatus L.〉Psathyrostachys juncea〉Agropyron mongolicum Keng in a germination condition.Prairie 3 Varia have some differences in Germination and growth period after emergence of three allelopathic effects of pasture..