土壤的主要特性有质地、酸度、养分含量、气体含量和含水量。

The major characteristics of soils are texture, acidity, nutrient content, gaseous content, and moisture content.

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土壤侵蚀主要通过影响土壤养分含量来影响土壤生产力。

Generally, its main approach is affecting contents of soil organic matters and nutrient.

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