不同水层和密度条件下化感作用水稻对无芒稗的干扰控制作用  

Interference of allelopathic rice cultivars on barnyardgrass under different water irrigation and rice plant density

作　　者：徐正浩[1,2,3] 何勇[1] 王一平[4] 俞谷松 

机构地区：[1]浙江大学生物系统工程与食品科学学院 [2]中国水稻研究所,杭州310006 [3]浙江省绍兴市越城区农林水利局,绍兴312000 [4]中国水稻研究所 [5]浙江省绍兴市越城区农林水利局

出　　处：《应用生态学报》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 )

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.

关 键 词：水稻 无芒稗 水层 密度 干扰控制 

分 类 号：S451[农业科学—植物保护]