The yield increase of K fertilizer was quite high at two rates of nitrogen application, and it closely relative to the content of available K in soil and potassium application rate.
钾肥的增产效率在两种氮肥水平下都较高，单位钾肥的增产量与土壤有效钾含量及施钾量呈极显著负相关；
Nitrogen application is the most effective way to adjust of the structure of yields. The rational nitrogen fertilizer technology is one of the available measures for improving the soybean yields.
氮肥的运筹方式是调节产量结构的最有效方式，合理施用氮肥是提高大豆产量的有效途径。
Ginger specific humic acid fertilizer increased the soil organic matter content, total nitrogen content, available nitrogen content, available phosphorus content.
生姜专用腐植酸复混肥提高了土壤有机质含量，土壤全氮、碱解氮和速效磷含量。
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