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四、养分之间的相互作用李比希的最小养分律是指作物产量往往为土壤中相对含量最小的一种养分所制约,作物的产量随着这种养分的增减而升降。如果不施用最小养分,而施用与之相关的另一种养分,很可能得到相反的结果。如果同时施用这两种养分,则可出现三种情况(这就是养分之间的相互作用效应,在数理统计学上称之为连应或交互作用): (一) 正的相互作用效应。当作物对两种养分同时施用的增产效应大于每种养分单独施用时的增产之和时,就可以说这两种养分具有明显的正的相互作用效应。
Fourth, the interaction between nutrients Libby’s minimum nutrient law refers to the crop yield is often the relative content of soil is the smallest one of the constraints of nutrients, crop yield with the rise and fall of this nutrient. If you do not apply the minimum nutrients, and the application of another nutrient associated with it is likely to get the opposite result. If both nutrients are applied at the same time, three things can happen (this is the interaction effect between nutrients, which is called mathematical or statistical interaction or interaction): (a) positive interaction effect. When the crop yield increase for both nutrients is greater than the sum of yield increases for each nutrient alone, the two nutrients have a clear positive interaction effect.