The effect of N, P and K on protein content of rice has been studied with mathematical models. Single factor effect, double factor effect and marginal factor effect have been analysed.
利用数学模型研究了肥料N、P、K对糙米蛋白质含量的影响，分析了单因素效应、双因素效应、边际效应。
The amount of demand for N, P and K, especially the ratios of P and K requirement of super high yielding japonica hybrid rice plant were higher than those of high yielding rice.
在养分积累、分配与利用上，超高产条件下，稻株对N、P、K三要素的吸收量增加，特别是P、K的吸收量增加明显；
The amount of demand for N, P and K, especially the ratios of P and K requirement of super high yielding japonica hybrid rice plant were higher than those of high yielding rice.
在养分积累、分配与利用上，超高产条件下，稻株对N、P、K三要素的吸收量增加，特别是P、K的吸收量增加明显；
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