低氮水平下由氮代谢转化为碳代谢的时间提前，高氮水平下由氮代谢转向碳代谢的时间推后。

In low nitrogen level, the time from nitrogen metabolism to carbon metabolism was shorten; however, in high nitrogen level, the time was deferred.

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食肉食物十分细致而又敏感地调整以适应于低氮水平，以至于这种额外的肥料使它们的系统超负荷，最终烧坏而死亡。

Carnivorousplants are so finely tuned to low levels of nitrogen that this extra fertilizeris overloading their systems, and they eventually burn themselves out and die.

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维持培养液中适当低的氮水平，并保证足够量的磷供应即较低的氮磷比是促进塔玛亚历山大藻生长的重要原因。

Maintenance of continues low level nitrate with sufficient supply of phosphate, namely low N:P ratio, may facilitate the growth of Alexandrium tamarense.

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