枯死但根部还活着；顶梢枯死；

1. 枯死：167 depend on 依靠,依赖 | 168 die back 枯死; | 169 die down 逐渐消失;止息;

2. die back的意思

2. 枝叶枯萎：die away 渐息 | die back 枝叶枯萎 | die by one's own hand 自杀

3. die back

3. 萎缩：dideoxy nucleotide 双脱氧核苷酸 | die back 萎缩 | diel rhythm 昼夜节律

4. 模孔出口角：die 模 | die back 模孔出口角 | die backer 模垫

1. suffer from a disease that kills shoots

    e.g. The plants near the garage are dying back

    Synonym: die down