主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报

• 快报 • 上一篇    

控制水稻分蘖角度对群体生态特性的影响

于亚辉;刘郁;陈广红;王绍林;夏明;阕补超;郑英杰;徐正进   

  1. 辽宁省盐碱地利用研究所
  • 收稿日期:2008-05-20 修回日期:2008-06-17 出版日期:2008-10-01 发布日期:2008-10-01

Effect of controlling tiller angle on population ecological characteristics of rice

YU Ya-hui;LIU Yu;CHEN Guang-hong; WANG Shao-lin;XIA Ming; QUE Bu-chao;ZHENG Ying-jie; XU Zheng-jin   

  1. Liaoning Saline or Alkaline Land Utilization and Research Institute
  • Received:2008-05-20 Revised:2008-06-17 Online:2008-10-01 Published:2008-10-01

摘要: 控制分蘖角度对群体温度、群体相对湿度、群体CO2浓度和光合有效辐射均会产生一定影响。选用2006年水稻有关研究数据,分析水稻分蘖角度对群体生态特征的影响。结果表明:各生育时期群体温度在07:00-19:00处理大于CK。分蘖高峰期到孕穗期CK白天群体相对湿度大于处理,齐穗期到灌浆期处理群体相对湿度大于CK。群体CO2浓度在拔节期和孕穗期均为处理大于CK,其他生育期差异不显著。光合有效辐射垂直分布是处理前期和后期上层截获的光能均小于CK,群体内消光系数小。控制分蘖角度形成了有较高温度、较低湿度、高CO2浓度和适宜光分布的群体,可为获得高产奠定基础。

关键词: 人工控制, 水稻, 分蘖角度, 生态特性

Abstract: Controlling tiller angle will influence temperature, relative humidity, CO2 concentration and photosynthetic active radiation of population. Based on the relative rice data in 2006, the effects of controlling tiller angle on population ecological characteristics were analyzed. The results indicate that population temperature of treatments from 07:00 to 19:00 are higher than that of CK in the different growth periods. The relative humidity of CK is higher than that of treatments from tiller peak stage to booting stage in the day, while it is contrary from full heading stage to filling stage. CO2 concentrations of treatments are higher than that of CK at elongation stage and booting stage, and there are no significant differences in other periods. The upper light intensities of treatments in vertical distributions of photosynthetic active radiation are larger than that of CK. The extinction coefficient of population is lower. The better group with higher temperature, lower relative humidity, higher CO2 concentration and better light intensity by controlling tiller angle can be formed, which is the base of rice high yield.

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