【摘要】 盆栽试验测定了 2 2份野生稻和 9份非洲栽培稻对无芒稗的抑制效果。发现野生稻 DY- 12和 DY- 16存在显著的抗性作用 ,它们对无芒稗的苗数抑制率分别达到 4 6 .1%和 4 7.0 % ,对无芒稗植株鲜重抑制率分别达到 6 6 .8%和 72 .3%。非洲栽培稻 FZ- 2 4也表现出良好的防治无芒稗效果 ,无芒稗苗数抑制率和植株鲜重抑制率分别达到 4 1.7%和 6 5 .7%。更多还原

【Abstract】 In a pot experiment, 22 wild rice and 9 African rice cultivars were evaluated in bioassay for resistance function on barnyardgrass [Echinochloa crus galli (L.) Beauv. var. mitis (Pursh) Peterm.]. Wild rice DY 12 and DY 16 had excellent resistance function with reduction in barnyardgrass seedling number being 46.1% and 47.0%, and in barnyardgrass plant fresh weight being 66.8% and 72.3%, respectively. African cultivar FZ 24 also had good resistance effect on the barnyardgrass with the seedling number reduction of 41.7% and plant fresh weight reduction of 65.7%, respectively.更多还原