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- Title
Greenhouse tomato transpiration and its affecting factors: Correlation analysis and model simulation.
- Authors
Yao Yong-zhe; Li Jian-ming; Zhang Rong; Sun San-jie; Chen Kai-li
- Abstract
A pot experiment was conducted to study the correlations between the daily transpiration of greenhouse tomato and the related affecting factors such as total leaf area per plant, soil relative moisture content, air temperature, relative humidity, and solar radiation under different treatments of supplementary irrigation. A regression model for the daily transpiration of greenhouse tomato was established. There existed significant linear correlations between the daily transpiration and the test affecting factors, and the affecting factors had complicated mutual effects. Soil relative moisture content was the main decision factor of the transpiration, with the decision coefficient being 27.4%, and daily minimum relative humidity was the main limiting factor, with the decision coefficient being -119. 7%. The square value of the regression coefficient (R2) between the predicted and measured tomato daily transpiration was 0. 81, root mean squared error (RMSE) was 68. 52 g, and relative prediction error (RE) was 19. 4%, suggesting that the regression model established by using the main affecting factors selected through path analysis could better simulate the daily transpiration of greenhouse tomato.
- Subjects
GREENHOUSE plants; PLANT transpiration; SOIL moisture potential; EFFECT of soil moisture on plants; EFFECT of temperature on plants; EFFECT of humidity on plants; EFFECT of solar radiation on plants
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2012, Vol 23, Issue 7, p1869
- ISSN
1001-9332
- Publication type
Article