基于功能结构模型的鲜切百合群体光截获模拟

doi:10.3969/j.issn.1000-6362.2019.01.005

摘要/Abstract

摘要：

针对鲜切百合株型设计和优化栽培手段不足的问题，通过田间试验和系统模拟对单株百合生长发育过程形态变化进行仿真模拟，构建百合功能结构模型，并利用叶倾角、叶序、出芽方向、出苗时间等关键生育参数在合理范围内的随机发生，实现对鲜切百合群体生长动态的三维重建。通过设置不同种植时间（4月10、20、30日和5月10、20、30日）、种植密度（66.7、33.3、22.2、16.7、13.3、11.1株·m-2）和不同株型（叶倾角分别为20°、30°、40°、50°、60°、70°和80°）的模拟情景，利用三维建模平台GroIMP中的辐射模型对百合群体累积光截获进行定量分析。结果表明，4月20日种植有助于百合群体获得最大累积光截获，叶倾角为20°的百合群体能够获得最大累积光截获。百合功能结构模型能够优化栽培管理、设计优势株型，为鲜切百合种质资源评价和株型基因改良提供理论依据和技术支撑。

关键词: 百合花, 光合有效辐射, 分期播种, 理想株型, 作物模型

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

李超，顾生浩，张立祯. 基于功能结构模型的鲜切百合群体光截获模拟[J]. 中国农业气象, 2019, 40(01): 41-50.

LI Chao, GU Sheng hao, Zhang Li zhen. Simulation of Photosynthetic Active Radiation Capture of Cut Flower Lily Based on Functional-structural Plant Model[J]. Chinese Journal of Agrometeorology, 2019, 40(01): 41-50.

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