The sequence of the model factor effects (N>K>P) and the relation between high yield and fertilizer application, and the mutual functions among the yield factors of various fertilizers.
明确了模型因素效应顺序（氮肥＞钾肥＞磷肥）和高产与施肥的关系，以及各肥料产量因素间的交互作用效应。
It shows that the yield improvement is mainly due to the soil nutrient amelioration (especially nitrogen nutrient) and the interaction of mutual supplement of N and P nutrient.
指出杨树刺槐混交林生产力提高主要是因为林地土壤养分（特别是N素养分）的极大改善及树种间N、P养分的互补。
Finally, a choice of 1 out of N potential controlled mutual blocking logical circuits in the form of matrix and a potential controlled auto-sampling circuit have been recommended.
最后，本文提出了一种电位控制的矩阵式，N 中取1的互斥逻辑电路和电位控制的自动取样电路。
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