Abstract:
By using the regression analysis, the T-test, the Pearson correlation analysis and 5 years straight line glide method of average carries, the Hebei Province Luancheng County 1980—2012 year temperature and the precipitation meteorological data change characteristic and its influences on the winter wheat climate output were analyzed .The results showed :(1)After analyzing weather temperate precipitation multi-annual variation tendency for the previous year from October and from March ,the next year January to May winter fine spring,it was discovered that the Luancheng County winter spring temperature in the recent 33 years had the obvious ascension tendency,the winter temperature elevated equally 0.45 ℃ every ten years,Spring the temperature elevated 0.75 ℃ every ten years,but the precipitation change is not obvious.
(2)The correlation is remarkable between winter wheat's climate output and winter spring temperature change ,but it is less with the precipitation change relevance.
(3)When the average temperature of winter and the spring are lower,the climate output is can be low along with it,which does not helpful to the winter wheat growth;When winter average temperature in 1 ℃ to 2.5 ℃ and the spring average temperature is high,the climate output is relative high,is advantageous in the winter wheat growth;the average temperature winter is in 1 ℃ to 2 ℃、ang the average temperature springin 13.85℃ to 14.85 ℃,then it is more advantageous to winter wheat's growth.