烟草是中国一种重要的经济作物，而氮是植物必需的矿质养分，研究烟草碳氮代谢规律，对指导烟草的生产具有重要的作用。

Tobacco is an important economic crop, and nitrogen is essential mineral element. Studies on carbon and nitrogenous metabolism of tobacco have important action on tobacco production.

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重金属胁迫会导致植物体细胞的矿质营养元素缺乏、代谢过程紊乱，甚至可引起植物的死亡。

Heavy metals were reported to cause the lack of mineral nutrition element in plant cells, metabolic abnormality, and the death of plants.

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综述了重金属导致植物体的某些矿质元素代谢异常的生理效应。

Therefore, the physiological effects of heavy metals stress on some mineral elements metabolism in plants were summarized in this paper.

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