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.
土壤微生物和土壤酶活性是反映土壤肥力最为重要的生物学指标之一。
Soil microorganism and soil enzyme activity is one of the most important indexes influencing the soil fertility.
土壤微团聚体具有影响土壤理化生物性质多方面的作用，可能作为评价土壤肥力水平的综合指标。
Soil microaggregates can influence the soil physical, chemical and biological properties and may be used as an overall index for evaluating the fertility level of soil.
三种酶可以作为评价黄河三角洲冲积平原湿地土壤肥力的指标。
So enzyme activities could be used as an index for soil fertility evaluation of wetlands covered with different vegetation in Yellow River Delta.
结果表明，全氮、碱解氮和有机质是黄土丘陵区人工林土壤主要的肥力指标，其含量能更好地反映土壤肥力状况。
The results showed that total nitrogen, available nitrogen and organic matter were the main fertility indicators for soil fertility evaluation in the planted forest land on the Loess Plateau.
因此，土壤酶活性可以作为该土壤肥力的指标之一。
So enzyme activity could be used as an index for evaluation of tidal flat soil fertility.
土壤供氮状况是判断土壤肥力的一项重要指标。
The supply condition of nitrogen is one of the important targets to judge the fertility in soils .
结果表明，广西红壤果园土壤肥力综合指标值(ifi)在0 17 ~ 0 25之间，果园土壤肥力属中下水平。
Results showed that the Integrated Fertility Index (IFI) of orchard soil in red earth regions of Guangxi were between 0.17 to 0.25 and belong to mid-low level.
土壤酶与土壤肥力因素关系密切，可作为衡量土壤肥力的敏感指标。
Soil enzyme activities closely related with soil fertility status, and could be chosen as sensitive indexes on soil fertility.
有机质是土壤的重要组成成分，其含量水平是衡量土壤肥力的重要指标之一。
Organic matter is a very important part of soil. The level of content is one of the key indicators to measure soil fertility.
本研究在分析河南省烤烟种植区各项肥力指标的基础上，建立了烤烟土壤肥力适宜性评价指标体系。
Based on analysis of the physical and chemical properties of soil samples collected from Henan tobacco plantation area, the index system of soil fertility adaptability of tobacco was established.
本研究在分析河南省烤烟种植区各项肥力指标的基础上，建立了烤烟土壤肥力适宜性评价指标体系。
Based on analysis of the physical and chemical properties of soil samples collected from Henan tobacco plantation area, the index system of soil fertility adaptability of tobacco was established.
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