1、改进大棚结构 ①建材。有条件的最好使用镀锌管大棚、寿光琴弦式大棚。棚面用 8号镀锌铁丝绷紧，即节省建材，又可减少遮光，很有推广价值。棚膜最好选用无滴膜；普通膜则以聚乙烯膜为好。另外，对建材和墙进行涂白处理，能增加反向光和延长使用年限；适当增加大棚高度，也? 1, to improve the structure of the greenhouse ① building materials. The best conditions for the use of galvanized pipe greenhouse, Shouguang strings greenhouse. Galvanized galvanized steel wire on the 8th taut, that save building materials, but also reduce the shading, great promotional value. The best choice of green film drip film; ordinary film is to polyethylene film as well. In addition, the white coating of building materials and the wall can increase the reverse light and extend the useful life; appropriate to increase the height of the greenhouse,