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首页> 外文期刊>International journal of soil science >Movement of nitrogen, phosphorus and potassium fertilizers in undisturbed soil columns as affected by soil compaction.
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Movement of nitrogen, phosphorus and potassium fertilizers in undisturbed soil columns as affected by soil compaction.

机译：氮，磷，钾肥在未受干扰的土壤柱中的运动受土壤压实的影响。

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摘要

This study was conducted to investigate the movement of the added fertilizers to soil as affected by soil compaction. In the experimented soil, three compaction levels were used. The soil was also irrigated for four times and after the each irrigation, phosphorus (P) and potassium (K) in the drainage water (effluent) was measured using standard methods. After the fourth irrigation, each soil column was divided to five equal parts and the elements in the columns were measured and finally the data were analysed using the statistical software. The results showed that as the compaction is increased, the movement of nitrogen (N) and K downward is reduced, but the movement of P is increased. The reason for the movement of N in low compaction is the existence of macropores for preferential flow and suitable conditions for nitrification. The movement of the most of K in low compaction is due to movement through macropores and preferential flow. The increase in P movement in high compaction is caused by high moisture and movement by diffusion.
机译：进行这项研究是为了研究受土壤压实影响的添加肥料在土壤中的运动。在试验的土壤中，使用了三个压实水平。还对土壤进行了四次灌溉，每次灌溉后，使用标准方法测量排水（污水）中的磷（P）和钾（K）。第四次灌溉后，将每个土壤柱分为五个相等的部分，并测量其中的元素，最后使用统计软件对数据进行分析。结果表明，随着压实度的增加，氮（N）和钾的向下运动减少，但磷的运动增加。 N在低密度下运动的原因是存在大孔，有利于流动和硝化的合适条件。低压实状态下大部分K的运动是由于通过大孔和优先流动引起的。高压实下P运动的增加是由于高水分和扩散运动引起的。

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