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%。 Pot experiments were conducted to determine the inhibitory effects of 22 wild and 9 African cultivated rice on barnyardgrass. The results showed that there was a significant resistance to DY-12 and DY-16 in wild rice, and their inhibition rates to barnyardgrass seedlings were 46.1% and 47.0%, respectively. 6 6 .8% and 72 .3%. African cultivated rice FZ-2 4 also showed good effect of preventing and curing barnyardgrass. The inhibition rates of barnyardgrass seedlings and fresh weight of plants were 41.7% and 65.7% respectively.