Abstract：Based on the temperature, precipitation and sunshine data from 1956 to 2010 at Luohe meteorological station, a regression method used, the change trend of the average temperature, precipitation, sunshine of the month and quarter and annum were analyzed. F-test was used in significance test to examine the regression equation. The results showed that Luohe climate is significant warming on the whole. The seasonal warming is more reliable than the monthly warming, the annual average temperature warming is more pronounced and more reliable than the seasonal warming. Luohe precipitation only in April is significantly reduced. Luohe sunshine hours is to reduce on overall trend. Quarterly, annual sunshine time change is more pronounced and more reliable than the monthly change. These changes directly affect the production of winter wheat and summer corn of Luohe, especially in the critical period may increase the instability of production, output volatility may increase.
2012, Vol. 29 