The response of the growth period of winter wheat to climate change was statistically analyzed by using linear regression methods based on the growth period observation data of winter wheat including temperature, sunshine hours, precipitation data in every growth period during 1971 -2010 in north of Hubei. The results showed that the mean temperature of full growth period showed an increasing tendency caused by global warming in the past 40 years, and the increasing rate of average temperature was 0. 37℃ per ten years. The average precipitation increased 1.44 mm per ten years. However, the average sunshine hours showed the downtrend rate of 1.33 h per ten years due to the global solar radiation decline. The results indicated that the growth period of winter wheat was influenced significantly because of the increasing temperature trend in north of Hubei.%利用鄂北冬小麦产区8个气象观测站1971 ～2010年共40年冬小麦生育期降水、气温和日照资料,运用线性统计方法探讨了鄂北冬小麦生育期气候变化规律.结果表明,冬小麦全生育期平均温度变化总体呈上升趋势,倾向率为0.37℃/10年,降水量增加的速度不大,降水量变化倾向率为1.44 mm/10年,日照时数变化的倾向率为- 13.3 h/10年,日照时数减少直接作用是太阳总辐射的下降.冬麦区气候变暖特征明显,对冬小麦生育期的影响显著.
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