translation.en: Any one of you who gardens knows that there is something called the root-shoot ratio, and plants need to keep the root mass in some rough balance with the leaf mass to be happy.
translation.zh: 了解园艺的人都知道有一个叫做“根冠比”的概念。 植物都需要保持住根群 同时和茎群保持大致的平衡以便维系。