水分亏缺可使土壤养分的有效性降低。
Water stress can decrease the availability of soil nutrients.
土壤活性有机碳的不同类型对土壤养分的有效性贡献不同。
The contribution of different types of active soil organic carbon to soil available nutrients was different.
养分的有效性是由土壤物理、化学和生物学特性，特别是根系主导的根际动态过程所决定的。
The availability of mineral nutrients for plants is determined by the chemical, physical and biological characteristics of soils, especially by root-induced changes in the rhizosphere.
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