Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (10): 97-105.doi: 10.11924/j.issn.1000-6850.casb2021-0409

Special Issue: 生物技术 园艺 农业气象

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The Characteristics of Climate Change in Main Growing Stages of Blueberry from 1968 to 2018 in Qingpu, Shanghai

ZHENG Zehua1(), YU Yanlue1, MA Zhongfen1, ZHU Huaiwei2   

  1. 1Shanghai Qingpu Meteorological Bureau, Shanghai 201700
    2Guangdong Ecological Meteorological Center, Guangzhou 510641
  • Received:2021-04-15 Revised:2021-07-02 Online:2022-04-05 Published:2022-05-23

Abstract:

By using the meteorological data of Qingpu national meteorological station from 1968 to 2018, we selected the standardized precipitation evapotranspiration index (SPEI) to analyze the evolution characteristics and the frequency of drought and flood in flowering stage, fruiting stage and maturity stage of blueberry in Qingpu. The results showed that: (1) the average temperature was 16.2℃ and increased significantly, the precipitation had obvious fluctuation, the temperature in different growth stages of blueberry had an upward trend, the precipitation showed an increasing trend in flowering and maturation stage, and a decreasing trend in fruiting stage; (2) an obvious interannual variation of drought and flood was observed in Qingpu, in the 1980s, 1990s and 2010s, the climate was wet, however, the climate in the 1970s and 2000s was relative dry; meanwhile, the evolution characteristics of drought and flood were different during different seasons, the alternation of drought and humidity was observed in the 1970s; in the 1980s, alternation of drought and humidity was found in spring and winter, while summer and autumn were generally humid; from 1990s to 2000s, the change from humidity to drought was observed in spring, summer and autumn, while the change from drought to humidity was found in winter; in the 2010s, summer, autumn and winter were wet, while spring had the alternation of drought and humidity; (3) the frequency of drought was 27.5%, 25.5% and 21.6% in flowering stage, fruiting stage and maturity stage of blueberry, and the frequency of humidity was 29.4%, 27.5% and 27.5%, respectively. The study suggests that in Qingpu, there is a tendency towards drought in flowering stage and fruiting stage of blueberry, while a tendency towards humidity in maturity stage, the frequency of humidity is more than that of drought on the whole.

Key words: blueberry, growth stage, drought and flood, SPEI index, production, Qingpu

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