To significantly promote plant growth in a short period of time, the following types of chemicals or fertilizers can be considered, but they should be used with caution to avoid harming plants or the environment: 1. **Nitrogen fertilizer**: Nitrogen is an important nutrient required for plant growth. Using high-nitrogen fertilizers such as urea or ammonium nitrate can promote rapid leaf growth. 2. **Phosphate fertilizer**: Phosphate can help plants strengthen root development and flowering. Superphosphate or diammonium phosphate can provide sufficient phosphorus. 3. **Potassium fertilizer**: Potassium can enhance the cold resistance and disease resistance of plants and promote fruit ripening. Potassium chloride or potassium sulfate are commonly used potassium fertilizers. 4. **Compound fertilizer**: Compound fertilizers containing multiple elements such as nitrogen, phosphorus, and potassium can provide comprehensive nutritional supply and are suitable for a wide range of plants. 5. **Growth regulator**: Certain plant hormones such as cytokinins and gibberellins can promote cell division and growth, accelerating the growth rate of plants. 6. **Trace element fertilizer**: The right amount of trace elements such as iron, zinc, copper, and manganese help various physiological processes of plants. When using these chemicals, the following points must be noted: - Follow the instructions for use or the advice of agricultural experts to avoid overuse. - Choose appropriate fertilizers and fertilizer amounts according to plant types and growth stages. - Pay attention to environmental protection and prevent chemical pollution of soil and water sources. In addition, comprehensive management measures such as improving soil quality, proper watering and lighting should also be considered to promote healthy growth.