2ZHANG Ming-jie1,2,FENG Shan1,YAO Sheng2 1.Puyang Meteorological Bureau in Henan Province,Puyang 457000,China,2.Henan Key Laboratory of Agricultural Meteorological Security and Application Technology,China Meteorological Administration,Zhengzhou 457003,China.Analysis on the Variation Characteristics of Sunshine Hours in Puyang City[J].Meteorological and Environmental Research,2011,2(7):23-26. 被引量：1
