气候变化对河南省中、北部冬小麦播期和越冬的影响

利用近30a气象资料,分析了小麦生育期内气温变化趋势,结合多年多点多品种播期试验,确定了河南省中、北部地区适宜的播种期.结果表明,小麦生育期内气温呈升高趋势,小麦生育期平均气温每年增加0.088 8℃;冬前气温也呈升高的趋势,冬前平均气温每年约增加0.054 5℃;越冬气温亦呈上升趋势,每年约增加0.078 8℃.综合...

Influence of Climate Change on Sowing Date and Cold Resistance in Winter in Central and Northern Regions of Henan Province

The trend of temperature change in wheat growth period was studied with meteorological data for 30 years.Appropriate sowing date was determined through multi-year-location-variety sowing date experiments.The results showed that the average temperature was increasing as time went on.Average temperature in wheat growth period increased annually by 0.0888 ℃.The trend of temperature before winter was also rising.The average temperature before winter increased annually by 0.0545℃.The average temperature during winter was also an ascendant trend with annual increase by 0.0788 ℃.Considering the results of the theories and the field tests,suitable sowing date of winter wheat should be controlled between October 7th and October 10th,and not later than October 15th in the central and northern regions of Henan province.