水稻移栽密度和早期水管理对无芒稗生态控制效果的影响

生态学杂志 ›› 2004, Vol. ›› Issue (4): 41-43.

水稻移栽密度和早期水管理对无芒稗生态控制效果的影响

徐正浩^1,2, 王一平¹, 余柳青¹, A. Martin Mortimer³

1. 中国水稻研究所, 杭州, 310006;
2.浙江大学生物系统工程与食品科学学院, 杭州, 310029;
3. 国际水稻研究所, 马尼拉, 1099

收稿日期:2003-04-26 修回日期:2003-07-19 出版日期:2004-08-10
基金资助:
国家“十五”科技攻关项目(2001BA509B07);中国博士后基金资助项目(20030034522)

Effects of rice transplanting density and early irrigation management on barnyardgrass ecological control

XU Zhenghao^1,2, WANG Yiping¹, YU Liuqing¹, A. Martin Mortimer³

1. China National Rice Research Institute, Hangzhou 310006, China;
2. College of biosystem engineering and food science, Zhejiang University, Hangzhou 310029, China;
3. International Rice Research Institute, Manila 1099, Philippines

Received:2003-04-26 Revised:2003-07-19 Online:2004-08-10

摘要/Abstract

摘要： 在50株·m^-2无芒稗的干扰下,杂交水稻Ⅱ优2070移栽密度19.8cm×26.4cm处理对无芒稗的生态控制效果显著高于较稀密度的19.8cm×46.2cm,无芒稗颖果减少71%。移栽密度19.8cm×26.4cm保证了较高的水稻有效穗和千粒重,比移栽密度19.8cm×46.2cm的水稻增产13.3%。早期深水灌溉能有效控制萌芽期的无芒稗,但不能防治3叶龄的无芒稗.

关键词: 杉木幼苗, 铝胁迫, 水培模拟, 外源营养调控因子, 阈值

Abstract: The ecological control of hybrid rice Ⅱyou 2070 on barnyardgrass (Echinochloa crusgalli), with interference density 50 plants·m^-2 mixture planted with rice, and transplanting density 19.8 cm×26.4 cm was higher than that of with transplanting density 19.8 cm×46.2 cm, resulting in barnyardgrass grain husk number reduce by 71%. Hybrid rice Ⅱyou 2070 with transplanting density 19.8 cm×26.4 cm ensured the higher effective panicle numbers and 1000 grain weight and the rice yield of which was 13.3 % higher than that of with rice transplanting density 19.8 cm×46.2 cm. Barnyardgrass could be controlled by deep water at its early stage. However, it appeared that barnyardgrass could not be controlled effectively by deep water when its seedling age was older than 3 leaf stage.

Key words: Cunninghamia laceolata seedling, Al stress, Solution culture, Exogenous nutrient elements, Thresholds

中图分类号:

S512

徐正浩, 王一平, 余柳青, A. Martin Mortimer. 水稻移栽密度和早期水管理对无芒稗生态控制效果的影响[J]. 生态学杂志, 2004, (4): 41-43.

XU Zhenghao, WANG Yiping, YU Liuqing, A. Martin Mortimer. Effects of rice transplanting density and early irrigation management on barnyardgrass ecological control[J]. cje, 2004, (4): 41-43.

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