巴旦杏越冬冻害气象指标

Meteorological Indexes of Freeze Injury on Amygdalus Communis L in Winter

低温冻害是危害新疆林果业持续健康高效发展的三大灾害之一,通过对越冬期间果树冻害历史灾情资料的调查及最低气温数据库的建立,研究冻害的发生时间、界限温度以及冻害发生年各项气象因子的变化特征,阐明果树越冬冻害与气象因子的关系。结果表明,可根据冬季平均气温、最低气温、降温天气及低温持续时间等确定该区巴旦杏越冬期发生冻害的气象指标。研究结果可为有效防范低温冻害提供理论依据,为林果业生产服务。

Low temperature and freeze injury was one of three major disasters that have disastrous effect on the development of fruit trees in Xinjiang. The factors such as the happening time, type, and limit temperature are analyzed by making the investigation of historical disaster conditions, and the database of low temperature is built. The characteristics of meteorological factors are analyzed to study the relationship between freeze injury and meteorological factors, such as the mean temperature, minimum temperature, and the duration of minimum temperature. The results shows that the quantitative indexes of freeze injury can be devised according to such factors as mean temperature in winter, minimum temperature, and the duration of minimum temperature, etc. The results are beneficial for the prevention of the freeze injury and the meteorological service of fruit production effectively.