| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve problems that crops such as agrochemical-free vegetables, leaf vegetables, fruits, flowers, etc., are found useful, from a wide consideration view of people's health, recovery from diseases, agriculture of our country, etc., in the case of bearing the global environment in mind, since farming without agricultural chemicals is indispensable, a cultivation method using an insecticidal net is going to become a mainstream, however, it is observed that security of suction amount of open air, avoidance of air blasting directly to crops while sending air to an optimal part in a greenhouse and security of over drying and foliar respiration are regarded difficult. <P>SOLUTION: The current shutter mounted on the wall surface of a greenhouse is equipped with a shutter plate, an interlocking means and a drive part for operating the interlocking part. The suction type shutter plate is opened and closed by wind pressure or a driving gear. The insecticidal net is fixed to a shutter frame. The insecticidal net has about 0.2mm-about 0.6mm scale of mesh and is fixed to the shutter frame in a firmly stuck state. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
