soil available nutrient的用法和樣例：
例句
- The store of nutrients in the soil which is available to plants is an important constraint upon plant productivity.
土壤中植物有效養分的儲存對于植物生長(cháng)量是一個(gè)重要的制約因素。 - This paper studies the fertilization of gangue weathering matter centered around its serious deficiencies in organic active matter and available nutrients.
圍繞煤矸石缺乏有機活性物質(zhì)及有效養分的問(wèn)題，在矸石山復墾種植時(shí)，對施肥作了試驗研究。
