Reporter: Professor Chen, why do some fertilizers are called compound fertilizers, and some are called compound fertilizers. What is the difference?
Expert: Let me talk about what is a simple fertilizer. It refers to one of the three nutrients of nitrogen, phosphorus and potassium in a certain fertilizer. For example, urea, superphosphate or potassium sulfate, they are all simple fertilizers. Compound fertilizer is different. When a chemical fertilizer contains two or three nutrients of N, P and K, it is collectively called compound fertilizer. Because the compound fertilizer is manufactured differently, the name is not called. same. Usually, chemically synthesized binary fertilizers are called compound fertilizers, such as diammonium phosphate, potassium dihydrogen phosphate, etc.; ternary fertilizers are prepared by secondary processing using diammonium phosphate and potassium chloride or potassium sulfate as base fertilizers. It is called compound fertilizer. Their nutrient content is expressed as a percentage of N, P205 and K20, such as 15-15-15 on the fertilizer bag, indicating a ternary compound fertilizer with a nitrogen, phosphorus and potassium content of 15% each; 18-46- 0 indicates that it is 18% nitrogen and 46% phosphorus diammonium phosphate, and the fertilizer does not contain potassium.
Reporter: May I ask Professor Chen, what are the advantages of compound fertilizer compared with elemental fertilizer?
Expert: The advantages of compound fertilizer have the following five aspects:
1. There are many nutrients in the range and the content of active ingredients is also high.
2. The particles are relatively solid, dust-free, uniform in particle size, and low in hygroscopicity, which is convenient for storage and application.
3. Containing less sub-components, has essentially no effect on soil properties.
4. Low production costs, saving transportation costs and packaging materials.
5. Save fertility and labor.
Reporter: Compound fertilizer has many advantages. Does it have any shortcomings?
Expert: Of course, it also has shortcomings, mainly:
1. The proportion of nutrients in compound fertilizers is relatively fixed, and it is difficult to meet the different requirements of various soils and various crops.
2. The nutrients in the compound fertilizer, its location and release rate are difficult to fully meet the special requirements of the crop for a certain period of time.
Reporter: Professor Chen, why is the compound fertilizer being the development direction of China's fertilizer industry?
Experts: Compound fertilizers have the advantages of nutrient distribution ratio and product serialization, and thus have broad application prospects. At present, many manufacturers have begun to produce special compound fertilizers, such as cotton special fertilizers and watermelon special fertilizers. A scientifically formulated compound fertilizer will bring convenience and benefits to farmers. Therefore, compound fertilizer is one of the development directions of China's fertilizer industry.
Reporter: What is the gap between the status quo of China's compound fertilizer development and foreign countries?
Experts: China's compound fertilizer started late and the development speed is not fast. At present, the total production of compound fertilizer only accounts for about 20% of the total domestic fertilizer. In Japan, the United States, Germany and other developed countries, the proportion of compound fertilizers is above 70%, compared with a large gap.
Expert tips:
1. Compound fertilizers are relative to simple fertilizers. Because of the different manufacturing methods of compound fertilizers, the name is different. The chemically synthesized binary compound fertilizer is called compound fertilizer; the compound fertilizer based on compound fertilizer is called compound fertilizer.
2. Compound fertilizer is one of the development directions of Chinese fertilizer. The degree of compounding of Chinese fertilizers is not high, and the potential for developing compound fertilizers is great. Actively developing compound fertilizer is the need for sustainable development of agriculture. The use of compound fertilizer is the need of farmers to get rich.
Source: Agricultural Resources Guide
Expert: Let me talk about what is a simple fertilizer. It refers to one of the three nutrients of nitrogen, phosphorus and potassium in a certain fertilizer. For example, urea, superphosphate or potassium sulfate, they are all simple fertilizers. Compound fertilizer is different. When a chemical fertilizer contains two or three nutrients of N, P and K, it is collectively called compound fertilizer. Because the compound fertilizer is manufactured differently, the name is not called. same. Usually, chemically synthesized binary fertilizers are called compound fertilizers, such as diammonium phosphate, potassium dihydrogen phosphate, etc.; ternary fertilizers are prepared by secondary processing using diammonium phosphate and potassium chloride or potassium sulfate as base fertilizers. It is called compound fertilizer. Their nutrient content is expressed as a percentage of N, P205 and K20, such as 15-15-15 on the fertilizer bag, indicating a ternary compound fertilizer with a nitrogen, phosphorus and potassium content of 15% each; 18-46- 0 indicates that it is 18% nitrogen and 46% phosphorus diammonium phosphate, and the fertilizer does not contain potassium.
Reporter: May I ask Professor Chen, what are the advantages of compound fertilizer compared with elemental fertilizer?
Expert: The advantages of compound fertilizer have the following five aspects:
1. There are many nutrients in the range and the content of active ingredients is also high.
2. The particles are relatively solid, dust-free, uniform in particle size, and low in hygroscopicity, which is convenient for storage and application.
3. Containing less sub-components, has essentially no effect on soil properties.
4. Low production costs, saving transportation costs and packaging materials.
5. Save fertility and labor.
Reporter: Compound fertilizer has many advantages. Does it have any shortcomings?
Expert: Of course, it also has shortcomings, mainly:
1. The proportion of nutrients in compound fertilizers is relatively fixed, and it is difficult to meet the different requirements of various soils and various crops.
2. The nutrients in the compound fertilizer, its location and release rate are difficult to fully meet the special requirements of the crop for a certain period of time.
Reporter: Professor Chen, why is the compound fertilizer being the development direction of China's fertilizer industry?
Experts: Compound fertilizers have the advantages of nutrient distribution ratio and product serialization, and thus have broad application prospects. At present, many manufacturers have begun to produce special compound fertilizers, such as cotton special fertilizers and watermelon special fertilizers. A scientifically formulated compound fertilizer will bring convenience and benefits to farmers. Therefore, compound fertilizer is one of the development directions of China's fertilizer industry.
Reporter: What is the gap between the status quo of China's compound fertilizer development and foreign countries?
Experts: China's compound fertilizer started late and the development speed is not fast. At present, the total production of compound fertilizer only accounts for about 20% of the total domestic fertilizer. In Japan, the United States, Germany and other developed countries, the proportion of compound fertilizers is above 70%, compared with a large gap.
Expert tips:
1. Compound fertilizers are relative to simple fertilizers. Because of the different manufacturing methods of compound fertilizers, the name is different. The chemically synthesized binary compound fertilizer is called compound fertilizer; the compound fertilizer based on compound fertilizer is called compound fertilizer.
2. Compound fertilizer is one of the development directions of Chinese fertilizer. The degree of compounding of Chinese fertilizers is not high, and the potential for developing compound fertilizers is great. Actively developing compound fertilizer is the need for sustainable development of agriculture. The use of compound fertilizer is the need of farmers to get rich.
Source: Agricultural Resources Guide
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