Abstract: Based on the meteorological data in 1961-2003 in the East of Guanzhong Areas of Shaanxi Province,the spatial and temporal distribution of the limited climate factors affected the greenhouse production in winter,such as extreme minimum air temperature,fog and continued cloudy days,was analyzed.The results showed that the extreme minimum air temperature,fog and continued cloudy days had an increased trend in winter.The trend of climate variations in the north and south of the Weihe River was different.The recommendations to promote the greenhouse production for vegetables and fruits in Dali County and properly reduce the greenhouse production in the areas along the Weihe River were put forward.

Key words: Climate variation, Climate variation, Solar greenhouse, Effect, Characteristics