论文部分内容阅读
温室透光覆盖材料的种类温室透光覆盖材料主要为玻璃、塑料薄膜(软质和硬质)和硬质塑料板(图1)。玻璃一般采用普通平板玻璃或者浮法玻璃;常用的塑料薄膜包括聚乙烯(PE)膜、乙烯-醋酸乙烯(EVA)膜、聚氯乙烯(PVC)膜和聚烯烃(PO)膜;常用的硬质塑料板主要是聚碳酸酯(PC)板,包括中空板和波浪板[1-3]。玻璃玻璃是一种透光、保温、防雾滴、耐久性能均较为理想的覆盖材料,结构系数可靠,使用寿命长达2 5年。玻璃温室光照条件好、室内作业空间大、使用时间长,适宜规
The type of greenhouse light-permeable cover material Greenhouse light-permeable cover material is mainly glass, plastic film (soft and hard) and rigid plastic plate (Figure 1). Commonly used plastic sheets include polyethylene (PE) film, ethylene-vinyl acetate (EVA) film, polyvinyl chloride (PVC) film and polyolefin (PO) film; common hard Quality plastic board is mainly polycarbonate (PC) board, including the hollow board and the wave board [1-3]. Glass glass is a kind of transparent, heat preservation, anti-droplet, durable performance are more ideal covering material, the structure coefficient is reliable, the service life of up to 25 years. Glass greenhouse light conditions, indoor work space, use a long time, suitable for regulation