Based on rainfall data in mid-summer of Shandong province, space distribution of rainfall in mid-summer, temporal evolution characteristics and decadal oscillation cycle were analyzed. Rainfall in mid-summer played an important role in whole year and summer, compared it with Shandong's rainfall in whole year and summer and northern china's rainfall in summer, and unique rule of space distribution and temporal evolution were studied.%以山东省伏期降水资料为基础,分析伏期降水的空间分布和时间演变特征以及年代际振荡周期,确定了伏期降水在全年、夏季降水中的重要地位,并与山东全年、夏季降水以及华北夏季降水进行对比分析,研究了其伏期降水空间分布、时间演变的独特规律.
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