论文部分内容阅读
2 对策 2.1 优化日光温室结构 (1)提高日光温室的采光性能。①日光温室方位角:正南偏西3°～5°,利于下午采光及夜间保温。②拱杆:采用钢竹结合圆拱式或二折式结构,以减少遮阴。钢筋行架,上弦直径14～16毫米,下弦直径12～14毫米,拉花直径8～10毫米,每间3.6米,中间在拉杆(8号铁丝)上每隔0.6米固定一根直径2厘米的竹竿;③后屋面角度:后屋面仰角38°,利于采光和保温;④透明屋面角度:透明屋面和地面夹角23°～25°(二折式);⑤透明覆盖材料:采用乙烯—醋酸乙烯无滴膜,其透光率及耐候性都优良。
2 Countermeasures 2.1 Optimization of solar greenhouse structure (1) to improve daylight greenhouse lighting performance. ① solar greenhouse azimuth: south west 3 ° ~ 5 °, conducive to afternoon lighting and night insulation. ② arch bar: steel and bamboo combined with circular or two-fold structure to reduce shading. Reinforced wire frame, the winding diameter of 14 to 16 mm, the lower string diameter of 12 to 14 mm, pull the diameter of 8 to 10 mm, each 3.6 meters, the middle of the rod (8 wire) every 0.6 meters fixed a diameter of 2 cm Of the bamboo; ③ rear roof angle: rear elevation 38 °, which is conducive to lighting and insulation; ④ transparent roof angle: transparent roof and the ground angle of 23 ° ~ 25 ° (two fold); ⑤ transparent covering material: Ethylene drip film, its light transmittance and weatherability are excellent.