Solar greenhouses: China's winning solution to global energy crisis

20 years of research produces definitive study on benefits of Chinese single-slope greenhouses

BEIJING, CHINA—Solar greenhouses have played a vital role in China's agricultural scene for years. New innovations in greenhouse design are allowing growers to produce more varieties of vegetables, even during long winter months. In a recently published report Chinese scientists called solar greenhouses "the most important type of infrastructures for growing horticultural crops in China." The team of researchers from the College of Agronomy and Biotechnology at China Agricultural University presented an extensive report on single-slope solar greenhouses in a recent issue of HortTechnology. Based on 20 years of systematic studies, the report noted: "Increased proliferation of efficient solar greenhouses in China may contribute to solving worldwide problems such as the energy crisis and global climate change."

Single-slope solar greenhouses are built facing south using support and insulation walls on the north, east, and west sides. A short roof is installed on top of the north wall. The south side is supported by metal or bamboo frames (or a mixture of both materials), and is covered with plastic film and an insulating blanket. These energy-efficient greenhouses use solar energy as the only source of light and heat for winter crop production in the region between latitudes 32°N and 43°N for production of warm season crops such as tomato and cucumber.