Design of the compact, stable vertical rice seedling frame for cold regions with DLI-based dynamic light control.
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| Title: | Design of the compact, stable vertical rice seedling frame for cold regions with DLI-based dynamic light control. |
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| Authors: | Guo, Lifeng1,2 guolifeng@neau.edu.cn, Wu, Fahui2, Huang, Junjie2,3, Wang, Yizhe2,3, Bao, Yujian2,3, Wu, Yuzhu2,3, Tang, Ru4, Su, Zhongbin3, Xie, Qiuju1, Ma, Zheng1,3, Wang, Liwei1,3, Zhang, Xin5 |
| Source: | International Journal of Agricultural & Biological Engineering. Apr2026, Vol. 19 Issue 2, p112-119. 8p. |
| Subjects: | Seedling quality, Structural analysis (Engineering), Photometry, Agriculture, Greenhouses |
| Abstract: | Traditional flat-bed rice nurseries in cold regions require large areas and suffer from inefficient tray movement and instability. A compact vertical rice seedling frame is developed in this work, which integrates a triangular-stabilized tray support, a four-point conveying mechanism, and anti-tilt/anti-torsion features, coupled with a dynamic lighting control strategy based on daily light integral (DLI). The mechanical design was validated by finite-element analysis under design loads, and collision-free operation was confirmed by digital mock-up simulation and prototype tests. In greenhouse trials comparing the vertical frame to conventional flat cultivation, the frame increased space-use efficiency to AP = 119.29% (i.e., = 19.29% higher than the flat bench), while maintaining seedling coverage at 98%±1% (ns) and stem diameter (ns), and producing significantly shorter (more compact) seedlings (p<0.05; a/b). These results demonstrate a practical pathway for high-density automated seedling production in cold climates using intelligent vertical systems. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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