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造成枯萎的原因主要是:1.水质不干净;2.愈伤组织被碰伤,伤口败坏,以致枯萎而死;3.愈伤组织如感染根癌菌,则切口处虽然膨大也不会生根。一般来
The main causes of the withering are as follows: 1. The water quality is not clean; 2. The callus is bruised and the wound is damaged so that the wilt dies; 3. The callus, if infected with the root-cancerous bacteria, . Generally come