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通过对哈尔滨地区近50年各级强度初、终霜冻日分布的研究,得出终霜冻的年际间差异比初霜冻大,且有强度大的霜冻年际间差异大而弱霜冻的年际间差异小的趋势,同时文中给出了各级强度霜冻指标出现的保证率曲线及各级保证率出现的相应日期。
Based on the study of the distribution of initial and final frost days in Harbin in the past 50 years, we can draw the conclusion that the difference of the final frost is larger than that of the initial frost, and that there is a large and weak interstellar frost At the same time, the paper presents the guarantee rate curve of the strength frost index at all levels and the corresponding dates of the guaranteed rates at all levels.