Soil organic matter and nutrients(e. g. nitrogen, phosphorus and potassium) play important roles in soil fertility.
土壤有机质和养分（氮、磷和钾等）是土壤肥力重要的物质基础。
Management of potassium resources refers to the rational application of potassic fertilizers and also includes the preservation of potassium fertility in the soil and its effective use.
钾素资源管理不仅指钾肥的合理施用，也包含了土壤中钾素肥力的保持和有效利用。
The organic matter and available potassium increased by a big margin will were vital question in the course of the fertility restoration of degenerated soil.
大幅度提高土壤有机质含量及供钾水平是退化土壤肥力恢复过程中面临的重要问题。
The analytical data revealed that the potential fertility of the dryland soils was rather low, such as nitrogen, phosphorus and potassium content in soil were deficient on the whole.
分析数据表明，该区旱地土壤潜在肥力较低，有机质含量差异较大，大部分土壤氮、磷、钾养分供应不足。
Potassium(K) balance in purple soil rice field ecosystem under rice-wheat rotation were studied on the National Purple Soil Fertility and Fertilizer Efficiency Monitored Base.
在国家紫色土肥力与肥料效益监测基地上，研究了稻麦轮作制度下紫色土稻田生态系统中钾素的平衡状况。
The capacity of supplying potassium in high-fertility soil is better than that in low-fertility soil, and the rate of potassium recovery is high.
高肥力土壤供钾能力强，钾肥利用率较高，而低肥力土壤则相反。
The capacity of supplying potassium in high-fertility soil is better than that in low-fertility soil, and the rate of potassium recovery is high.
高肥力土壤供钾能力强，钾肥利用率较高，而低肥力土壤则相反。
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