1991年底至1992年初,我国柑桔产区受强寒流侵袭,先是冻雨、大雪,接着又是严重霜冻和晴朗干旱,使柑桔大面积严重受冻害。据我们最近在长江中下游各省桔区调查结果,桔树一年生枝条及越冬叶片全部发生冻害,严重地区已有死树出现,给春季桔园管理带来许多问题。现简述技术要点,供当前生产参考。 From the end of 1991 to the beginning of 1992, China’s citrus producing areas were hit by strong cold currents, first with freezing rain and heavy snowfall, followed by severe frosts and sunny droughts, which severely damaged citrus trees in large areas. According to our recent findings in the orange regions of the middle and lower reaches of the Yangtze River, frozen branches of annual tree branches and overwintering leaves of orange trees all occurred. Dead trees appeared in serious areas, which brought many problems to the management of orange groves in spring. Are outlined technical points for the current production reference.