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病态先出现在幼嫩组织,尖端发白,茎及枝条的生长点死亡。蕾、花和子房等繁殖器官易脱落,果实、种子
Pathological first appeared in young tissues, sharp white, stems and branches of the growth point of death. Buds, flowers and ovaries and other reproductive organs easily fall, fruits, seeds