Chinese Journal of Agrometeorology ›› 2019, Vol. 40 ›› Issue (01): 41-50.doi: 10.3969/j.issn.1000-6362.2019.01.005

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Simulation of Photosynthetic Active Radiation Capture of Cut Flower Lily Based on Functional-structural Plant Model

LI Chao, GU Sheng hao, Zhang Li zhen
  

  1. 1. Beijing Municipal Climate Centre, Beijing 100089, China; 2. Beijing Research Center for Information Technology in Agriculture, Beijing 100097; 3. Beijing Key Lab of Digital Plant, Beijing 100097;4. College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193
  • Online:2019-01-20 Published:2019-01-22

Abstract:

In order to overcome the lack of approach to designing crop ideotype and to optimizing agronomic managements, a functional-structural plant(FSP) model for cut flower lily that can simulate growth and development of lily was developed via combination of experimental measurements and system simulations. The three- dimensional(3D) population growth of lily was reconstructed by using random algorithm to regulate leaf inclination, phyllotaxis, seedling orientation and seedling time within a reasonable range. The accumulated photosynthetic active radiation(PAR) of lily canopy in relation to different planting date(10, 20, 30 April and 10, 20, 30 May), plant density(66.7,33.3,22.2,16.7,13.3,11.1 plants·m-2) and plant type(leaf inclination were 20°, 30°, 40°, 50°, 60°, 70° and 80°) were quantitatively analyzed using the radiation module embedded in a 3D modelling platform GroIMP. The results showed that the accumulated PAR of lily canopy can be maximized by planting on April 20 and by decreasing the leaf inclination to 20°. FSP model for lily can be applied to design crop ideotype and to optimize agronomic managements, thus providing theoretical basis and technical support for evaluation of germplasm resources and genetic improvement.

Key words: Lilium, Photosynthetic active radiation, Different planting date, Ideotype, Crop model