关键词: 东北三省, 水稻孕穗期, 障碍型低温冷害, 气候变化

Abstract: To provide the basis for predicting sterile type chilling damage, taking rice shell rate from 1961 to 2010 in Northeast China as a basic data of sterile type chilling damage, the distribution and variation of sterile type chilling damage at rice booting stage in Northeast China in last 50 years was analyzed by using of the methods of cumulative curve and Wavelet analysis. The results showed that the steriletype chilling damage at rice booting stage was mainly distributed in the northeast of Jilin and southeast of Heilongjiang. In Jilin province, chilling damage was increasing before 1972 and decreasing during 1973-1981,then increasing during 1982-1985 and decreasing during 1986-2001, increasing since 2002. The situation in Heilongjiang province was similar to in Jilin province, but it was not changed obviously in Liaoning province. There was periodic variation with 24 years and 16 years in Heilongjiang province,24 years and 8 years in Jilin province, but there was not obvious period in Liaoning province. There was an evident that sterile type chilling damage at rice booting stage was increasing in Northeast China after the beginning of the 21st century.It was estimated that the upward trend of sterile type chilling damage could be up to 2016 in Heilongjiang province and Jilin province, but not obvious in Liaoning province.

Key words: Northeast China, Booting stage, Sterile type chilling damage, Climate change