trophic impulse

例句：

1. 1.The trophic impulse of the plant is crucial for its survival.
   植物的营养冲动对其生存至关重要。
2. 2. The researcher found that a certain type of bacteria could stimulate the trophic impulse in plants.
   研究者发现某种细菌可以刺激植物的营养冲动。
3. 3.The trophic impulse plays a vital role in the growth and development of plants.
   营养冲动在植物的生长和发育中起着至关重要的作用。