| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a shutter with an insecticidal net for a greenhouse, with which the scale of mesh of the net is about 0.1mm-about 0.6mm, small insect invasion is prevented by the scale of mesh of the size (considered to prevent approximately 100% vermin damage under the present situation), suction amount of open air is secured, temperature and humidity are properly controlled and which meets the demands of reality. <P>SOLUTION: The shutter 2 mounted on the wall surface of a greenhouse 1 is equipped with a shutter plate and a linking plate to move the shutter plate and the shutter plate is opened and closed by wind pressure or a driving gear. The insecticidal net 5 is fixed to a shutter frame, the insecticidal net has about 0.1mm-about 0.6mm scale of mesh, the pressure loss of the net by the scale of mesh is covered by the stretched area of the net. The shutter with the insecticidal net of the greenhouse secures a necessary amount of air. Thus even in greenhouse cultivation, a cultivation method using an insecticidal net is going to become a mainstream, however, security of suction amount of open air, control of temperature and humidity or reduction in area under tillage of a greenhouse are not taken into consideration (not devised) and a problem of obstacle to popularization of a greenhouse with an insecticidal net is eliminated. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
