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作物学报 ›› 2011, Vol. 37 ›› Issue (05): 868-875.doi: 10.3724/SP.J.1006.2011.00868

• 耕作栽培·生理生化 • 上一篇    下一篇

基于株型的水稻冠层光合生产模拟

李艳大1,2,朱相成1,汤亮1,曹卫星1,朱艳1,*   

  1. 1 南京农业大学国家信息农业工程技术中心/江苏省信息农业高技术研究重点实验室，江苏南京 210095；2 江西省农业科学院农业工程研究所，江西南昌 330200
  • 收稿日期:2010-10-25 修回日期:2011-03-08 出版日期:2011-05-12 网络出版日期:2011-03-24
  • 通讯作者: 朱艳, E-mail: yanzhu@njau.edu.cn; Tel: 025-84396565
  • 基金资助:

    本研究由教育部新世纪优秀人才支持计划项目(NCET-08-0797), 国家重点基础研究发展计划项目(2009CB118608)和江苏省自然科学基金项目(BK2009307)资助。

Simulation of Canopy Photosynthetic Production Based on Plant Type in Rice

LI Yan-Da1,2, ZHU Xiang-Cheng1,TANG Liang1,CAO Wei-Xing1,ZHU Yan1,*   

  1. 1 Jiangsu Key Laboratory for Information Agriculture, National Engineering and Technology Center for Information Agriculture, Nanjing Agricultural University, Nanjing 210095, China; 2 Institute of Agricultural Engineering, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, China
  • Received:2010-10-25 Revised:2011-03-08 Published:2011-05-12 Published online:2011-03-24
  • Contact: 朱艳, E-mail: yanzhu@njau.edu.cn; Tel: 025-84396565

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1890

被引次数

33

摘要： 利用基于冠层光分布的光合作用模型，以紧凑型和松散型2个不同株型水稻冠层为对象，通过设计不同的模型输入参数组合，定量分析了不同株型水稻冠层直接辐射消光系数的日变化特征、正午时刻直接辐射在冠层内的垂直分布特征、冠层内光合作用速率的垂直分布特征、不同辐射强度下冠层光合作用速率随叶面积指数的变化特征及其日变化等。结果表明，紧凑型的增产潜力依赖于较大的叶面积指数、叶片光合效能、太阳高度角和太阳辐射强度等。研究结果为水稻高产栽培及理想株型的优化设计提供了支撑。

关键词: 水稻, 株型, 消光系数, 直接辐射, 光合作用速率, 分布特征

Abstract: By using canopy-light-distribution-based photosynthetic model, and designing various combinations of model input parameters for compact and loose plant types of rice, quantitative analyses were made on the diurnal variation in extinction coefficient of canopy direct radiation with different plant types, the vertical distribution characteristics of direct radiation at noon and of photosynthetic rate within canopy, the characteristics of canopy photosynthetic rate with the changed leaf area index (LAI) under different radiant intensities, as well as the diurnal variation of canopy photosynthetic rate under different radiant intensities. The results showed that the high yield potential of compact plant type in rice relied on higher LAI, leaf photosynthetic efficiency, solar altitude and the intensity of solar radiation. These results would provide a support on cultivation for high yield and optimal design of plant type in rice crop.

Key words: Rice (Oryza sativa L.), Plant type, Extinction coefficient, Direct radiation, Photosynthetic rate, Distribution characteristics

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