多数细菌在微酸性的介质中生长最好。
番茄在任何土壤中都能生长，但在土质肥沃、排水良好的微酸性粘土中长势最为繁茂。
Tomatoes grow in just about any soil, but they really thrive in rich, well-draining loam that is slightly acidic.
这微酸性环境中也为其他产烷生物的存活提供了更好的条件。
The less-acidic environment that results becomes a better host for other methanogens.
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