The Study of the Tomato Transpiration Model on Subtropical Protected Culture

• Main Authors: Jiun-Yuan Chen, 陳俊源
• Other Authors: 陳加忠
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/27999570389655216039

博士 === 國立中興大學 === 生物產業機電工程學系所 === 105 === Locating in subtropical region, Taiwan’s climate is varied severely. For the stable production, protected culture is usually a selection method for farmers. Transpiration estimation of crops play an important role for reducing water consuming and suppling adequate amount of water for crops in subtropical protected culture. Most transpiration estimation studies are conducted in northern country, the feasibility of these transpiration estimates need to be assessed as they were applied in subtropical region. In this study, a leaf boundary layer measurement device was set up to measure the wind speed, the amount of transpiration of a potted tomato, the temperature and relative humidity around the leaves. Then the relation of wind speed and the mount of transpiration of a potted tomato was derived with regression analysis. The data of subtropical protected cultured tomato was introduced to the above regression results. The estimator of the boundary layer resistance in subtropical protected cultured tomato was conducted. The Stanghellini model was evaluated with these data, the less accuracy part which occurred at high wind speed and high VPD situation was improved. Then modified model was verified with independent tomato culture data. With the adjustments of the boundary layer resistance and stomatal resistance for the Stanghellini model, the accuracy of the tomato transpiration rate was increased significantly.