摘要
不同水层下水稻对无芒稗的干扰控制作用研究表明 ,水稻化感作用品种吓一跳、谷梅 2号和中15 6对无芒稗的株高抑制作用比无化感作用品种秀水 6 3和春江 11呈显著性差异 .随盆栽水稻密度增加 ,水稻对无芒稗的干扰控制作用加大 .在每盆 4株栽植密度下 ,水稻化感作用品种鸡早籼、谷梅 2号显著抑制无芒稗植株株高 ;在每盆 32株密度时 ,水稻化感作用品种吓一跳、PI312 777、TN1等对受控无芒稗的干扰控制与无化感作用品种春江 11相比 ,呈显著性水平 .
Pot culture experiments were conducted to examine the effects of water irrigation and rice plant density on the interference of allelopathic rice on barnyardgrass (Echinochloa crus-galli).The results showed that under water irrigations,allelopathic rice cultivars Xiayitiao,Gumei 2 and Zhong 156 significantly reduced the plant height of barnyardgrass than non-allelopathic rice cultivars Xiushui 63 and Chunjiang 11.Barnyardgrass plants grew shorter as rice plant density increased.Allelopathic rice cultivars Jizaoxian and Gumei 2 interfered with barnyardgrass,even at their densities as low as 4 plants per pot,and the interference reduced plant height of barnyardgrass significantly compared with the non-rice control.Allelopathic rice cultivars Xiayitiao,Jizaoxian,PI312777,TN1,Gumei 2 and Zhong 156 at 32 rice plants per pot inhibited the growth of barnyardgrass significantly than Chunjiang 11.
出处
《应用生态学报》
CAS
CSCD
2004年第9期1580-1584,共5页
Chinese Journal of Applied Ecology
基金
中国博士后基金项目 ( 2 0 0 3 0 0 3 45 2 2 )
国家自然科学基金资助项目 ( 3 0 170 62 0 )
关键词
水稻
无芒稗
水层
密度
干扰控制
Rice, Barnyardgrass, Water irrigation, Rice plant density, Interference.
