Abstract:Abstract: Analysis of artificial observation station and automatic temperature differences and reason。using 2006-2007 Dezhou automatic and manual stations parallel observations of ground temperature data, analysis to compare the difference of temperature variation and the factors that influence the size difference. The results showed that; 0cm-15cm diurnal variation of the difference increases with increasing temperature, that is quite different during the day and night, little difference; ground 0cm, ground up, the average monthly minimum temperature difference between the ground are negative, which Maximum temperature difference between the ground the maximum amplitude, the standard deviation of 0.62, followed by ground minimum temperature and standard deviation of 0.23, the ground 0cm smallest difference changes, the standard deviation of 0.15; 5-320cm,15-20cm in the monthly average difference Positive,5-10cm ,40-320cm monthly average difference is negative, and the amplitude difference to deepen and change with soil depth is small; seasonal changes in temperature and the temperature difference causes the value of the size of the main reasons.