But whichever one is in short supply in a given area is deemed the limiting nutrient.
限制性营养指的是任意一种营养物质在某个区域供给短缺。
英语百科
Limiting factor
（重定向自Limiting nutrient）
A limiting factor of a system is an input or variable such that a small change in it from the present value would cause a non-negligible change in an output or other measure of the system. A factor which is not limiting over a certain domain of starting conditions may yet be limiting over another domain of starting conditions, including that of the factor in question.