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利用辽宁省50个代表站的1961~2003年的初、终霜日和无霜期资料,对辽宁省无霜期按地区、年代进行了较详细的统计、分析。结果表明:60、70年代初霜早,终霜晚,无霜期偏短;80年代无霜期延长,初霜延迟,终霜提前;90年代变化更显著;反映了60、70年代偏冷,80年代变暖,90年代后持续变暖的气候特征。
Based on the data of primary and final frost days and frost-free period from 1961 to 2003 of 50 representative stations in Liaoning Province, the author conducted a more detailed statistical and analysis of the frost-free period in Liaoning Province by region and age. The results showed that frost early and late frost late in the 1960s and early 1970s, and the frost-free period was too short. In the 1980s, the frost-free period was prolonged, the initial frost was delayed and the frost frost was advanced. The changes were more significant in the 1990s, reflecting the cool in the 1960s and 1970s, Warm, climatic characteristics of continued warming after the 1990s.