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l、塑料薄膜应用。最早用塑料薄膜覆盖温室的,据报道是在1945年的欧洲。与玻璃温室相比,它的魅力来自低廉的成本。美国的第一个塑料温室建于1953年。 2、温室防温设施的应用。一般气温如果长期高于30℃,花卉生长就会受到影响。50～60年代出现湿墙和排风扇降温设施后,降温效果才变得较为理想,使得花卉生产可以实现周年连续性。
l, plastic film applications. The first greenhouse covered with plastic film was reported in Europe in 1945. Compared with the glass greenhouse, its charm comes from the low cost. America’s first plastic greenhouse was built in 1953. 2, the application of greenhouse temperature protection facilities. If the general temperature is higher than 30 ℃ for a long time, flower growth will be affected. After the appearance of wet wall and exhaust fan cooling facilities in the 1950s and 1960s, the cooling effect became more idealized, which made it possible to achieve annual continuity of flower production.