Not all instances of the N+1 problem are as readily perceived.
并非所有的 N+1 问题都能很容易地察觉到。
Exceptions did exist, especially with alkali-hydrolyzable n, readily available p, readily available k, and micro-elements, which sometimes altered inconsistently with the above-said patterns.
但也有例外，尤其是碱解n、速效p和速效k以及微量元素，有时出现与上述规律不一致的情况。
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