黑龙江省西部作物生长季平均温度变化特征分析

Analysis of the Variation Characteristics of Mean Temperature of Crop Growing Season in the Western Heilongjiang Province

利用小波变换理论研究作物生长季温度时间序列的多时间尺度变化及突变特征,以黑龙江省西部甘南县54年生长季(5-9月)平均温度为例进行研究,结果表明,生长季平均温度呈上升态势,生长季气温具有5、9、25和44年左右的周期。揭示出了黑龙江西部作物生长季平均温度变化趋势,为农业生产充分利用热量资源和挖掘农作物生产潜力提供科学依据。

Based on growing season(May-September)mean temperature time series of Gannan County in western Heilongjiang Province,changes in multi-time scale and jump characteristics of mean temperature time series had been probed with Morlet wavelet transform.The results showed that the mean temperature during the growing season was increasing,and the temperature during the growing season had periods of about 5,9,25,and 44 years.This study revealed the average temperature change trend of the growing season of crops in western Heilongjiang,and provided a scientific basis for agricultural production to make full use of heat resources and tap the potential of crop production.