Articles
RELATIONSHIPS BETWEEN MICROCLIMATE UNDER PLANT BLANKETS AND THEIR PHYSICAL PROPERTIES
Article number
230_74
Pages
559 – 564
Language
Abstract
The physical properties of five types of the film for a plant blanket was evaluated and their effects on the climate under the blanket film was examined.
The infrared radiation properties were affected by both the raw material and the porosity of the blanket film.
The air change rates of the split fiber films are bigger than that of nonwoven fabrics because the porosity and the gap size of the formers are much bigger than those of the latters.
The results from the field experiment showed the different regimes of temperature and humidity due to the different blanket films.
The inside-outside temperature difference was expressed by a hyperbolic function of the air change rate when the solar radiation intensity was given.
The leaf temperature under the blanket film could be estimated by using simple heat balance equation, when the outside climate and the physical properties of the blanket film were given.
The infrared radiation properties were affected by both the raw material and the porosity of the blanket film.
The air change rates of the split fiber films are bigger than that of nonwoven fabrics because the porosity and the gap size of the formers are much bigger than those of the latters.
The results from the field experiment showed the different regimes of temperature and humidity due to the different blanket films.
The inside-outside temperature difference was expressed by a hyperbolic function of the air change rate when the solar radiation intensity was given.
The leaf temperature under the blanket film could be estimated by using simple heat balance equation, when the outside climate and the physical properties of the blanket film were given.
Authors
Q. Chen, M. Okada, Y. Aihara
Keywords
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