Change Laws of Air Temperature in Sloping Fields Solar Greenhouse in Songshan Area of Chifeng City

The microclimate factors of in inside and outside greenhouse were observed to know civil wallgreenhouse microclimate variation and improve facilities for agricultural meteorological service levels. Thetemperature, moisture, ground temperature and solar radiation in inside and outside greenhouse and insidemodel prediction were observed by using correlation analysis and stepwise regression method. The resultsshowed that:(1) indoor temperature, humidity, soil temperature had obvious diurnal variation in summer andwinter, and the greenhouse warming was higher in winter than in summer, which confirmed that greenhouseconstruction wall had a good thermal insulation effect;(2) with the depth increasing of soil layer, the soiltemperature was decreased at 5, 10 and 20 cm, and the peak value of soil temperature was lag 1 hour with theincreasing of soil layer;(3) a positive relationship was found between greenhouse indoor temperature and indoormicroclimate factors. The absolute error value of indoor temperature prediction was less than 1℃ in summerand winter and relative error was less than 10% by established indoor temperature prediction model in summerand winter.