当玻璃温室与塑料薄膜温室或大棚的覆盖面积在一定范围内时,可以靠自然通风,也就是以开窗形式造成内外空气交换。由于温室与大棚构筑用料与结构形式的不同,各类通风窗及其开关机构的设计要点也就不同,但不论哪种机构,总应满足下述要求: 1、符合农艺要求。随着作物、季节的不同可以分别开地窗、侧窗或天 When the glass greenhouse and plastic greenhouse or greenhouses coverage area within a certain range, you can rely on natural ventilation, which is in the form of fenestration caused by internal and external air exchange. Due to the different materials and structures used to construct greenhouses and greenhouses, the design essentials for all types of ventilation windows and their switchgear are also different. However, no matter what kind of mechanism, the following requirements should be met: 1. Accord with agronomic requirements. With the crops, the seasons can be opened to different windows, side windows or days