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 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。
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