The results are as follows: 1. The contents of total soil nitrogen and Olsen-P in farmlands increased obviously, soil potassium content increased slightly in general and reduced in some regions.
研究结果表明： 1、甘肃农田土壤全氮、速效磷含量显著提高，土壤钾素含量总体上略有上升，但局部地区下降明显。
参考来源 - 甘肃农田氮磷钾养分资源特征研究In all tillage treatments, NTS can obviously decrease the deficience of potassium in soil.
3不同耕作措施中,免耕秸秆覆盖能明显减少土壤钾素亏缺。
参考来源 - 不同耕作措施对旱地钾素平衡的影响及钾肥效应研究·2,447,543篇论文数据，部分数据来源于NoteExpress
介绍河西农田施钾效应及土壤钾素消长变化情况。
The effect of potassium application in the farmland in Gansu corridor and the fluctuation of potassium in soil are discussed.
通过实验室和田间试验才能测定出土壤钾素水平是否适宜。
Laboratory or field tests would be needed to determine the adequacy of K.
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.
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