施用足量有机肥可以维持并提高土壤钾素含量和供钾水平。
Also, the application of manure increased the levels of potassium in Lou soil significantly.
根据云南烟区土壤钾素含量及分布特点，提出了相应的施肥措施。
The suitable fertilization formula was recommended based on the characteristics of potassium content and distribution of soil in Yunnan tobacco growing areas.
沉积物对土壤钾素状况的影响与其颗粒组成、有机质含量、CEC和土地利用方式等因素有关。
The sediment and soil potassium condition is related to some factors, such as granule size, organic matter content, CEC and land use means.
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