通过对1960-2021年广西钦州荔枝主产区气象要素进行统计,结合荔枝生物学特性及农业气象灾害指标,分析钦州荔枝生产的主要农业气象灾害演变特征及影响.结果表明:1960-2021年钦州市荔枝主产区冬季冻害、春季(花期)寒害呈减轻趋势,大风、花期高温热害等灾害呈加重趋势,果实膨大期干旱情况呈先下降后上升趋势,果实膨大后期降雨量偏多的频率大.根据农业气象灾害演变特征提出应对策略,为荔枝生产趋利避害、提质增效提供科学参考.
Based on the statistics of the date on the meteorological elements in the main litchi producing areas in Qinzhou of Guangxi from 1960 to 2021,combined with the biological characteristics of litchi and the agricultural meteorological disaster indicators,this paper analyzed the evolutionary characteristics and effects of the major agricultural meteorological disasters in Qinzhou.The results showed that the freezing damage in winter and cold damage in spring(flowering stage)in Qinzhou from 1960 to 2021 tended to decline;strong wind damage and the hot damage due to high temperature at the flowering stage was aggravating;the drought during fruit expansion period showed a trend from decline to rise;the frequency of more rainfall in the late period of fruit expansion was high.Therefore,the countermeasures were put forward to provide a scientific reference for the production of litchi and its quality and efficiency.