His use of the term differs from the current meaning—he wrote about farming with a special interest in soil origin, its nutrient content and the view of plant life as "vertical" life forms, specifically relating to their underground root structures.
他对这个词的使用有别于当前的意义 — 他笔下的耕种，特别兴趣点在于土壤的来源，其营养成分以及视植物生命为“垂直”式的观点， 尤指与地下根结构的关系。