您好，欢迎访问北京市农林科学院 机构知识库！
北京市农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Heterogeneity Analysis of Cucumber Canopy in the Solar Greenhouse

文献类型： 外文期刊

作者： Qian Ting-ting 1 ; Lu Sheng-lian 2 ; Zhao Chun-jiang 1 ; Guo Xin-yu 2 ; Wen Wei-liang 2 ; Du Jian-jun 2 ;

作者机构： 1.Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China

2.Beijing Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China

关键词： heterogeneity;inclination;leaf azimuth;light interception;photosynthesis

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2014 年 13 卷 12 期

页码：

收录情况： SCI

摘要： Detailed analysis of canopy structural heterogeneity is an essential step in conducting parameters for a canopy structural model. This paper aims to analyze the structural heterogeneity of a cucumber (Cucumis sativus L.) canopy by means of analyzing leaf distribution in a greenhouse environment with natural sunlight and also to assess the effect of structural canopy heterogeneity on light interception and photosynthesis. Two experiments and four measurements were carried out in autumn 2011 and spring 2012. A static virtual three-dimensional (3D) canopy structure was reconstructed using a 3D digitizing method. The diurnal variation of photosynthesis rate was measured using CIRAS-2 photosynthesis system. The results showed that, leaf azimuth as tested with the Rayleigh-test was homogeneous at vine tip over stage but turned heterogeneous at fruit harvest stage. After eliminating the influence of the environment on the azimuth using the von Mises-Fisher method, the angle between two successive leaves was 144 degrees; at the same time, a rule for the azimuth distribution in the canopy was established, stating that the azimuth distribution in cucumber followed a law which was positive spin and anti-spin. Leaf elevation angle of south-oriented leaves was on average 13.8 degrees higher than that of north-oriented leaves. The horizontal distribution of light interception and photosynthesis differed significantly between differently oriented leaves. East- and west-oriented leaves exhibited the highest photosynthetic rate. In conclusion, detailed analysis of canopy structural heterogeneity in this study indicated that leaf azimuth and elevation angle were heterogeneous in cucumber canopy and they should be explicitly described as they have a great impact both on light distribution and photosynthesis.

  • 相关文献

[1]The Photosynthetic Characteristics and Water Use of WL323MF at Different Irrigation Treatments in Beijing. Lin Meng,Pei-chun Mao,Guo-fang Zhang. 2009

[2]Effects of Partial Rootzone Irrigation on Growth and Physiological Characteristics in Apple Trees and Water Use Efficiency. Wei, Q.,Wang, X.,Zhang, Qing,Zhang, Qiang,Liu, S.,Liu, J.. 2011

[3]Computational Experiments of Light Distribution and Photosynthesis in Cucumber (Cucumis sativus L.) Canopy. Qian, Tingting,Lu, Shenglian,Zhao, Chunjiang,Guo, Xinyu,Wen, Weiliang. 2012

[4]Relationships between soil respiration and photosynthesis-related spectral vegetation indices in two cropland ecosystems. Huang, Ni,Niu, Zheng,Zhan, Yulin,Xu, Shiguang,Wu, Chaoyang,Gao, Shuai,Hou, Xuehui,Cai, Dewen,Huang, Ni,Xu, Shiguang,Hou, Xuehui,Cai, Dewen,Tappert, Michelle C.,Huang, Wenjiang.

[5]Dose-Dependent Effects of Coronatine on Cotton Seedling Growth Under Salt Stress. Xie, ZhiXia,Liu, Xiaojing,Duan, LiuSheng,Li, ZhaoHu,Wang, XiaoDong.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：北京市农林科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台