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When the relative soil moisture was more than 87.84% at any single growth stage, the SOD activity of A. 在單一階段土壤相對含水率超過87.84%時，幼樹葉片中SOD活性在中前期—生長前期和生長盛期隨供水量的增加而增大。
This paper explores a method of estimating the relative available soil moisture(RAM) that supports plant growth. 本文探討了一個通過土壤有效水分含量來確定土地等級和土地生產(chǎn)力的方法。