Soil pH

Phosphorus soil components in relation to soil pH

The soil pH is a measure of the acidity or alkalinity in soils. pH is defined as the negative logarithm (base 10) of the activity of hydronium ions (H+ or, more precisely, H
3O+
aq) in a solution. In water, it normally ranges from -1 to 14, with 7 being neutral. A pH below 7 is acidic and above 7 is alkaline. Soil pH is considered a master variable in soils as it controls many chemical processes that take place. It specifically affects plant nutrient availability by controlling the chemical forms of the nutrient. The optimum pH range for most plants is between 5.5 and 7.0, however many plants have adapted to thrive at pH values outside this range.

单词	Soil pH
释义	Soil pH 原声例句 Life Noggin Even if the seed isn't digested or passed, plants typically need their soil's pH to be between 4.5 and 8, but stomach acid has a much lower pH, ranging from 1.5 to 3. 即使种子没有被消化或传递，植物通常也需要土壤的pH值在4.5到8之间，但胃酸的pH值要低得多，在1.5到3之间。英语百科 Soil pH The soil pH is a measure of the acidity or alkalinity in soils. pH is defined as the negative logarithm (base 10) of the activity of hydronium ions (H+ or, more precisely, H 3O+ aq) in a solution. In water, it normally ranges from -1 to 14, with 7 being neutral. A pH below 7 is acidic and above 7 is alkaline. Soil pH is considered a master variable in soils as it controls many chemical processes that take place. It specifically affects plant nutrient availability by controlling the chemical forms of the nutrient. The optimum pH range for most plants is between 5.5 and 7.0, however many plants have adapted to thrive at pH values outside this range.
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