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北京市玉渊潭公社自力更生,初步建成一座较现代化的大型蔬菜温室,为周年供应蔬菜和开展蔬菜科学研究创造了条件。同时,大型温室比土温室节省土地、有利于发展机械耕作。这座温室长300米、宽63米、菜地面积28.5亩。温室内光照充足,在光照最弱、日照最短的冬季,在温室内栽培床上全天均能受到光
Beijing Yuyuantan commune self-reliance, initially built a more modern large-scale vegetable greenhouse, for the anniversary of the supply of vegetables and vegetables to carry out scientific research to create the conditions. At the same time, large-scale greenhouses save land more than the soil greenhouse, which is conducive to the development of mechanical farming. The greenhouse is 300 meters long, 63 meters wide and covers an area of 28.5 acres. Sufficient light in the greenhouse, the weakest light, the shortest winter sunshine, greenhouse cultivation in the bed all day light