土壤肥力指标一般指的是土壤中的有机质和腐殖质，肥沃的土壤一般呈微酸性
土壤转化酶活性与草地主要养分关系密切，它可作为土壤肥力指标。
There were closely relations between the activity of invertase and main soil nutrients, that can be the index of soil fertility.
平衡施肥法和土壤肥力指标法是目前国内外普遍采用的两种测土配方施肥方法。
At present, in formulated fertilization the balanced fertilization method and soil fertility index method are widely utilized at home and abroad.
通过田间调查和土壤肥力指标分析，探讨了松辽平原玉米带黑土肥力退化的原因和机理。
Through field investigation and soil fertility index analysis, causes and mechanism of fertility degradation of black soil in the Songliao Plain were explored.
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