Study on characteristics of shading material suitable for lining for greenhouse with roof open
2009
Moriyama, T.(Fukuoka-ken. Agricultural Research Center, Chikushino (Japan)) | Hayashi, M. | Ide, O.
In the case of shading material of about 40% shading rate with a high short wave-length region reflectance and a low short wave-length region absorptance, the temperature of the shading material remained low. A shading material with high porosity proved superior in air transmissivity. In the choice of shading material, porosity serves as an index for preferred air transmissivity. When shading material with a low absorptance rate of the short wavelength region and a high porosity rate was used as lining for greenhouse with roof open, the inside temperature was properly controlled. When shading material with a high absorptance ratio of short wave-length region and a high porosity ratio was used for lining a greenhouse with the roof films removed, both the ambient and soil temperatures inside the greenhouse remained lower than where such a device was not installed, and the growth of spinach in the greenhouse where we set the shading material was found to be good.
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