rate of application and time of phosphorus 磷施用量和时间 rate of fertilizer application 施肥量 rational application of fertilizer 合理施肥; 肥料的合理使用; 肥料要合理施肥 ..
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The peak of ammonia volatilization rate increased with the increase of phosphorus fertilizer application.
随施磷量增加，氨挥发速率峰值增高。
In the total rate, the contribution of variety change, cultural improvement, the application of fertilizer, and soil productivity was 54%, 36%, 15%, and 27% respectively.
其中，品种更换、栽培技术改进、施肥水平与地力变化和三因子综合作用对产量增长的贡献分别占54％、36％、15％和27％。
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；
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