Investigation of the Minimum Air Temperature of Sunlight Greenhouse in Winter in Kazuo County

The minmum air temperature of sunlight greenhouse in winter from 2006 to 2008(from November to February)in Kazuo county was analyzed.The results indicated that the mean minimum air temperature of sunlight greenhouse was 8.1℃ in winter,and the extreme minimum air temperature was 3.5℃.The minimum air temperature of sunlight greenhouse increased with the increase of air temperature.The difference of minimum air temperature inside and outside sunlight greenhouse the next day decreased with the increase of colund cover.The minimum air temperature inside sunlight greenhouse the next day was telated with the wind direction.Prediction model on the minimum air temperature of sunlight greenhouse in winter was developed by regression analysis method.The accuracy rate reached 83% and achieved the better service.