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.
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。
The balance combination of mineral substance , kinds of trace element increase and the dog's 11 kinds of essential amino acids, causes your pet to be healthier, and with a brighter wool color.
矿物质、各种微量元素的添加与犬必需的11种氨基酸的平衡组合，使您的爱犬更加健康，毛色更加亮泽。
The balance combination of mineral substance , kinds of trace element increase and the dog's 11 kinds of essential amino acids, causes your pet to be healthier, and with a brighter wool color.
矿物质、各种微量元素的添加与犬必需的11种氨基酸的平衡组合，使您的爱犬更加健康，毛色更加亮泽。
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