Analysis of temperature evolution and low-temperature disaster characteristics at flowering stage of Cuiguan pear in Jinhua,Zhejiang Province
Based on the temperature data of Jinhua national basic weather station from 1953 to 2022 and the Cuiguan pear phenological observation data of Jinhua national agrometeorological Ⅰ basic station from 2013 to 2022,flowering characteristics and temperature evolution regularity at flowering stage of Cuiguan pear were an-alyzed.Low-temperature disaster characteristics at flowering stage of Cuiguan pear were also analyzed accord-ing to low-temperature disaster indicators.The results showed that period time of Cuiguan pear flowering las-ted for 8～12 days,and the earliest initial flowering date was March 14th,the latest final fading date was April 10th.From the 1990s,temperature during mid March to early April(flowering stage of Cuiguan pear)showed a clear upward trend.The frequency of low-temperature disaster weather was higher in the 1950s and 1970s,followed by the 1980s,and relatively lower in the 1960s,1990s,and 2000s.Extreme low temperature during Cuiguan pear flowering stage fluctuated greatly from 1953 to 2022.As the climate turned significant warming,the frequency of low-temperature disaster was about once in four years.Once the low-temperature disaster oc-curs,the intensity of low-temperature could be greater,so prevention measures should be prepared.The re-search results can provide theoretical reference for pear industry development and disaster mitigation in Jinhua,Zhejiang Province.
万方数据
维普
