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Interactions between Diffuse Light and Cucumber (Cucumis sativus L.) Canopy Structure, Simulations of Light Interception in Virtual Canopies

文献类型： 外文期刊

作者： Zhang, Yingyu 1 ; Yang, Juan 1 ; van Haaften, Marinus 2 ; Li, Linyi 1 ; Lu, Shenglian 4 ; Wen, Weiliang 5 ; Zheng, Xiuguo 1 ; Pan, Jian 6 ; Qian, Tingting 1 ;

作者机构： 1.Shanghai Acad Agr Sci, Inst Agr Sci & Technol Informat, Shanghai 201403, Peoples R China

2.Inholland Univ Appl Sci, Domain Agri Food & Life Sci, Rotterdamseweg 141, NL-2628 AL Delft, Netherlands

3.Delft Univ Technol, Technol Policy & Management, Jaffalaan 5, NL-2628 BX Delft, Netherlands

4.Guangxi Normal Univ, Coll Comp Sci & Informat Technol, Guilin 541004, Peoples R China

5.Natl Engn Res Ctr Informat Technol Agr, Beijing Key Lab Digital Plant, Beijing 100097, Peoples R China

6.Shanghai Jiao Tong Univ, Sch Agr & Biol, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

关键词： 3D structural model; light interception; plant simulation; virtual cucumber canopies; diffuse light; canopy structure

期刊名称：AGRONOMY-BASEL （ 影响因子：3.949； 五年影响因子：4.117 ）

ISSN：

年卷期： 2022 年 12 卷 3 期

页码：

收录情况： SCI

摘要： Plant photosynthesis and biomass production are associated with the amount of intercepted light, especially the light distribution inside the canopy. Three virtual canopies (n = 80, 3.25 plants/m(2)) were constructed based on average leaf size of the digitized plant structures: 'small leaf' (98.1 cm(2)), 'medium leaf' (163.0 cm(2)) and 'big leaf' (241.6 cm(2)). The ratios of diffuse light were set in three gradients (27.8%, 48.7%, 89.6%). The simulations of light interception were conducted under different ratios of diffuse light, before and after the normalization of incident radiation. With 226.1% more diffuse light, the result of light interception could increase by 34.4%. However, the 56.8% of reduced radiation caused by the increased proportion of diffuse light inhibited the advantage of diffuse light in terms of a 26.8% reduction in light interception. The big-leaf canopy had more mutual shading effects, but its larger leaf area intercepted 56.2% more light than the small-leaf canopy under the same light conditions. The small-leaf canopy showed higher efficiency in light penetration and higher light interception per unit of leaf area. The study implied the 3D structural model, an effective tool for quantitative analysis of the interaction between light and plant canopy structure.

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