2011年庆云县金丝小枣晚熟的气候原因分析

Analysis of the Climate in 2011 Qingyun County Jujube Late

七月十五半红枣,说的是庆云县金丝小枣农历七月十五前后开始变红,到了八月十五基本成熟,秋分时节是大面积收获金丝小枣的时段。但在2011年,到了八月十五,金丝小枣还是一片绿色盎然,按照季节及以往的规律,2011年的金丝小枣应当在9月中旬成熟,但实际上却推迟了1个月。为了寻求造成金丝小枣晚熟的原因,从气候方面入手,重点围绕气温、降水、日照等进行分析,并与1971—2010年气候特征进行比较,发现2011年金丝小枣整个生长期的总体气候没有出现异常,但在成熟期,气温偏低、气温日较差偏小、降水日数偏多和日照严重不足是造成金丝小枣晚熟的主要原因。

According to the historical records of the same period, the colors of Ziziphus jujuba in Qingyun beginto turn red before and after lunar calendar in July 15, which is ripe on the whole to lunar calendar in August15, and then the fruit is fully harvested in autumnal equinox season. However, the Ziziphus jujuba stillpresented a green and lush to lunar calendar in August 15 in 2011. In accordance with the growth pattern ofthe Ziziphus jujuba of in this region, the Ziziphus jujuba should mature in mid- September, however, itsmaturity actually delayed a month. In order to find the reason which caused the delayed maturity of Ziziphusjujuba, the analysis mainly focus on the climatic features of temperature, precipitation and sunshine hours inthis paper, furthermore, a comparison was made between the features in 2011 and the climatic features duringthe period from 1971- 2010. The results showed that there was no significant abnormalities on the overallclimate of the whole growing reason, however, by further detailed analysis, it was found that the features of thelow temperature, the small diurnal temperature, the above normal precipitation days and the serious shortage ofsunshine during the maturity of Ziziphus jujuba, which were the main cause of late- maturing of Ziziphusjujuba.