Ecological Agriculture: Development of Precision Cultivation and Management Technology【Department of Agronomy / Kuo, Bo-Jein / Professor】
生態農業：農業精準栽培管理技術開發【農藝學系郭寶錚教授】
論文篇名 Plant-response-based control strategy for irrigation and environmental controls for greenhouse tomato seedling cultivation
期刊名稱 AGRICULTURE
發表年份,卷數,起迄頁數 2022, 12(5), 633
作者 Fang, Shih-Lun; Chang, Ting-Jung; Tu, Yuan-Kai; Chen, Han-Wei; Yao, Min-Hwi; Kuo, Bo-Jein(郭寶錚)*
DOI 10.3390/agriculture12050633
中文摘要
  1. 本研究以氣孔導度為出發點設計一個概念式的系統，將影響氣孔導度的因素作為決策的關鍵。
  2. 在實際應用上，此系統只需要葉片溫度、氣溫、蒸汽壓差和光量子通量密度等數據即可執行，初步評估系統的總體錯誤率在13.36%以下。
英文摘要 Most existing greenhouse decision support systems only consider external environmental factors, such as soil and atmosphere, rather than plant response. A conceptual plant-response-based strategy for irrigation and environmental controls for tomato (Solanum lycopersicum) seedling cultivation in greenhouse operations was proposed. Because stomatal conductance (gsw) is a comprehensive indicator of plants, soil moisture, and atmospheric conditions, this study used gsw to design a conceptual system by employing factors affecting gsw as the key for decision-making. Logistic regression was performed with independent variables (i.e., temperature (Tair), vapor pressure deficit (VPD), and leaf–air temperature difference) to predict the gsw status. When the gsw status was “low,” the system entered into the environmental control component, which examined whether the VPD and the photosynthetic photon flux density (PPFD) were in the normal range. If the VPD and the PPFD were not in the normal range, the system would offer a suggestion for environmental control. Conversely, when both parameters were in the normal range, the system would determine that irrigation should be performed and the irrigation amount could be estimated by the evapotranspiration model. Thus, the strategy only considered leaf temperature, Tair, VPD, and PPFD, and the overall error rate to characterize gsw was below 13.36%.
發表成果與本中心研究主題相關性 基於作物反應的溫室番茄苗期之灌溉和環境控制策略，可達到永續農業創新發展之目的。