K efficiency 钾效率
K efficiency ratio 钾效率比
K agronomy efficiency 钾素农学利用率
K production efficiency 钾素生产效率
k utilization efficiency 钾素利用效率
P fertilization increased N, P and K accumulation in tree biomass and nutrient use efficiency in wood and biomass production.
施P肥还增加了树木N、P和K的养分积累量，提高了上述养分的利用效率。
Results showed that there were significantly genotypic variations in rice grain yield, K utilization efficiency and shoot K accumulation at different growth stage under two different K supply.
研究结果表明，两种供钾水平下，水稻的稻谷产量、钾利用效率和各生育期地上部钾积累都存在显著的基因型差异。
On the basis of balancing algorithm efficiency and accuracy of clustering, improved formula of clustering distance and K average algorithm approach were presented. Satisfactory results were achieved.
并且在权衡算法效率和聚类精度的基础之上提出了改进的聚类距离公式和K -平均算法，达到了较好效果。
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