Solar Greenhouse Environment Test and Analysis in Winter in Qinghai

To provide theory instruction for solar greenhouse design and construction,environment reasonable control and crop growing,the environment of typical solar greenhouse in Qinghai was tested in the coldest time of winter.The day change of air temperature,solar radiation and soil temperature of different depth was discussed under the weather of sunny and cloudy,and the heat preservation of solar greenhouse enclosure structure was analyzed.Lastly,some suggestions was put forward to solve the bad weather's influence on crop growing from manage measures,vegetable varieties and instruction parameters.