采用1961-2010年开封市气象资料、玉米产量资料、农作物受灾资料,分析气候变化对玉米产量的响应.结果表明:在此期间开封市玉米生长期积温与玉米产量均呈上升趋势,二者有明显的正相关关系,积温是气象因子影响玉米产量的主要因素；降水量与玉米产量呈正相上升关系,分析表明开封市玉米生长期的降水量多于玉米生长所需的水分；日照时数呈明显的下降趋势,日照与玉米产量从趋势上看有明显的反相关关系,表明日照时数虽然对玉米的品质和产量有一定影响,但不起决定作用.%We analysis data by the Kaifeng climate, maize yield,The damage to crops, then find the relation between climate change and the wheat yield. Accumulative temperature and the maize yield in Maize growth period are on the rise. There is a positive relationship. Accumulative temperature to influence the Maize yield. Rainfall and maize yield are on the rise. There is a positive relationship, maize growth period the rainfall are more than maize growth needs of moisture. Sunshine hours show clear downtrend. There is a inverse relationship. Sunshine in the quality and yield of Maize have certain effect, but it is not the main factor.
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