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近年来,我国北方地区蔬菜节能型日光温室发展很快,取得了十分显著的效益。据报道,我国日光温室面积已达30多万亩。年提供商品菜30亿公斤。每年为国家节煤1300余万吨,相当节约2亿多元。日光温室分布范围向南已到北纬32°的黄淮平原的蚌埠、阜阳。向北已跨过长城,推向北纬
In recent years, the energy-saving vegetable greenhouse in the northern part of our country has developed rapidly and has achieved significant benefits. According to reports, the area of solar greenhouse has reached more than 30 million mu. Year to provide goods 3 billion kg of vegetables. Annual savings of more than 13 million tons for the country, a considerable savings of more than 200 million yuan. Sunlight greenhouse distribution range to the south of Huang-Huai Plain Bengbu, Fuyang. North has crossed the Great Wall, pushed north latitude